ORCID Profile
0000-0003-0548-4078
Current Organisation
University of Sydney
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Research Topics
In Research Link Australia (RLA), "Research Topics" refer to ANZSRC FOR and SEO codes. These topics are either sourced from ANZSRC FOR and SEO codes listed in researchers' related grants or generated by a large language model (LLM) based on their publications.
Top 5 Research Topics
ANZSRC Field of Research (FoR)
Optical And Photonic Systems | Optics And Opto-Electronic Physics | Communications Technologies | Optical Physics | Nanophotonics | Theoretical Physics | Nanotechnology | Photonics, Optoelectronics and Optical Communications | Lasers and Quantum Electronics | Atomic molecular and optical physics | Nonlinear optics and spectroscopy | Nonlinear Optics and Spectroscopy | Nanofabrication, Growth and Self Assembly | Photonics and Electro-Optical Engineering (excl. Communications) | Nanotechnology | Optical Properties of Materials | Photodetectors, Optical Sensors and Solar Cells | Nanophotonics | Nanofabrication growth and self assembly | Lasers and quantum electronics | Optical Physics Not Elsewhere Classified | Instruments And Techniques | Photonics optoelectronics and optical communications | Other Electronic Engineering | Communications Technologies Not Elsewhere Classified | Quantum Optics And Lasers | Electrical and Electronic Engineering | Astronomical instrumentation | Nanoelectronics | Optical Networks and Systems
ANZSRC Socio-Economic Objective (SEO)
Physical sciences | Telecommunications | Expanding Knowledge in the Physical Sciences | Combined operations | Fixed Line Data Networks and Services | Expanding Knowledge in Technology | Scientific Instruments | Expanding Knowledge in Engineering | Communication equipment not elsewhere classified | Emerging Defence Technologies | Network transmission equipment | Other | Industrial instrumentation | Diagnostic methods | Integrated circuits and devices | Scientific instrumentation | Solar-Photovoltaic Energy | Industrial Instruments | Medical Instruments | Network Infrastructure Equipment |
Related Links
Publications
The pure-quartic soliton laser
Publisher: Springer Science and Business Media LLC
Date: 25-05-2020
Gap solitons in quadratically nonlinear gratings: Beyond the cascading limit
Publisher: American Physical Society (APS)
Date: 09-2000
Abstract: We consider pulse propagation in quadratically nonlinear gratings. Assuming that the phase mismatch between the fundamental and the second-harmonic frequencies deltak is large, we present a perturbation method in deltak(-1). In the well known cascading limit, terms to deltak(-1) are kept here we keep terms to deltak(-2), which leads to another type of coupled mode equations. Numerical calculation of the full equations support our theoretical results.
Pulse train generation by soliton fission in highly nonlinear chalcogenide (As2S3) waveguide Bragg grating
Publisher: Institution of Engineering and Technology (IET)
Date: 2009
DOI: 10.1049/EL.2009.1463
Approximate model for optical pulse compression by cross-phase modulation in Bragg gratings
Publisher: American Physical Society (APS)
Date: 10-1994
Bragg remnants in stratified random media
Publisher: American Physical Society (APS)
Date: 04-1993
Chalcogenide glass photonic crystals
Publisher: Elsevier BV
Date: 04-2008
Publisher's Note: Guided modes of a wire medium slab: Comparison of effective medium approaches with exact calculations [Phys. Rev. B91, 155427 (2015)]
Publisher: American Physical Society (APS)
Date: 11-04-2016
Spatiotemporal instabilities in nonlinear bulk media with Bragg gratings
Publisher: Optica Publishing Group
Date: 2001
Guided modes of a wire medium slab: Comparison of effective medium approaches with exact calculations
Publisher: American Physical Society (APS)
Date: 24-04-2015
Nonlinear switching using long-period gratings in As2Se3 chalcogenide fiber
Publisher: Optica Publishing Group
Date: 31-07-2008
Bistability suppression and low threshold switching using frozen light at a degenerate band edge waveguide
Publisher: The Optical Society
Date: 19-11-2012
DOI: 10.1364/OE.20.027363
Slow light in nonlinear fibre Bragg gratings
Publisher: IEEE
Date: 2006
Spectral Talbot effect: interpretation via band diagrams
Publisher: Elsevier BV
Date: 04-2005
Roadmap for investigating epigenome deregulation and environmental origins of cancer
Publisher: Wiley
Date: 13-09-2017
DOI: 10.1002/IJC.31014
Generalized Exact Dynamic Localization in Curved Coupled Optical Waveguide Arrays
Publisher: American Physical Society (APS)
Date: 07-09-2012
Relative performance of one-dimensional nonlinear plasmonic structures
Publisher: OSA
Date: 2017
Kerr nonlinear characteristics of plasmonic waveguide devices
Publisher: IEEE
Date: 07-2016
Add-drop multiplexing by dispersion inverted interference coupling
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 08-2002
Quasi-Bloch Oscillations in Curved Coupled Optical Waveguides
Publisher: American Physical Society (APS)
Date: 10-2009
Semianalytic treatment for propagation in finite photonic crystal waveguides
Publisher: Optica Publishing Group
Date: 15-05-2003
DOI: 10.1364/OL.28.000854
Abstract: We present a semianalytic theory for the properties of two-dimensional photonic crystal waveguides of finite length. For single-mode guides, the transmission spectrum and field intensity can be accurately described by a simple two-parameter model. Analogies are drawn with Fabry-Perot interferometers, and generalized Fresnel coefficients for the interfaces are calculated.
Nonlinear absorption in media with composite gold nanoparticles
Publisher: The Optical Society
Date: 07-10-2019
Decay rate and level shift in a circular dielectric waveguide
Publisher: American Physical Society (APS)
Date: 20-01-2005
Coupled mode theory: Limitations and applicability
Publisher: Informa UK Limited
Date: 02-2004
Influence of two-photon absorption on modulational instability
Publisher: Optica Publishing Group
Date: 08-2001
Dynamic tuning of a supercontinuum using an acoustic grating - experimental and numerical investigation
Publisher: IEEE
Date: 02-2008
Bright stationary solitary waves in deep gratings with a quadratic nonlinearity
Publisher: American Physical Society (APS)
Date: 26-01-2001
Continuous-wave parametric amplification in Bragg gratings
Publisher: Optica Publishing Group
Date: 12-1995
Long period fibre gratings for tunable spectral enhancement of a supercontinuum
Publisher: IEEE
Date: 06-2007
Single scatterer Fano resonances in solid core photonic band gap fibers
Publisher: Optica Publishing Group
Date: 18-09-2006
DOI: 10.1364/OE.14.008797
Abstract: Solid core photonic bandgap fibers (SC-PBGFs) consisting of an array of high index cylinders in a low index background and a low index defect core have been treated as a cylindrical analog of the planar anti-resonant reflecting optical waveguide (ARROW). We consider a limiting case of this model in which the cylinders in the SC-PBGF cladding are widely spaced apart, so that the SC-PBGF modal loss characteristics should resemble the antiresonant scattering properties of a single cylinder. We find that for glancing incidence, the single cylinder scattering resonances are Fano resonances, and these Fano resonances do in fact appear in the loss spectra of SC-PBGFs. We apply our analysis to enhance the core design of SC-PBGFs, specifically with an eye towards improving the mode confinement in the fundamental bandgap.
Solid-core fiber with ultra-wide bandwidth transmission window due to inhibited coupling
Publisher: The Optical Society
Date: 22-11-2010
DOI: 10.1364/OE.18.025556
Calculation of electromagnetic properties of regular and random arrays of metallic and dielectric cylinders
Publisher: American Physical Society (APS)
Date: 12-1999
Abstract: A method is developed to calculate electromagnetic properties of arrays of metallic and dielectric cylinders. It incorporates and exploits cylindrical boundary conditions and Rayleigh identities for efficient, high-accuracy calculation of scattering off in idual layers that are stacked into arrays using scattering matrices. The method enables absorption, dispersion, and randomness to be incorporated efficiently, and reproduces known results with vastly improved speed and accuracy. It is used to demonstrate existence of states introduced into photonic band gaps of a dielectric array by disorder, and anomalous absorption behavior in arrays of aluminum cylinders.
Total absorption in structured ultrathin semiconductor layers
Publisher: OSA
Date: 2014
Packing density of conventional waveguides and photonic crystal waveguides
Publisher: Elsevier BV
Date: 03-2006
General anaesthesia versus local anaesthesia for carotid surgery (GALA): a multicentre, randomised controlled trial
Publisher: Elsevier BV
Date: 12-2008
Picoseconds all-optical switch and pulse re-shaper based in a bistable Bragg grating cavity
Publisher: SPIE
Date: 30-04-2010
DOI: 10.1117/12.853770
Envelope-function approach for the electrodynamics of nonlinear periodic structures
Publisher: American Physical Society (APS)
Date: 11-1988
High-Q cavities in multilayer photonic crystal slabs
Publisher: IEEE
Date: 07-2008
Continuously tunable bandpass filtering using high-index inclusion microstructured optical fibre
Publisher: Institution of Engineering and Technology (IET)
Date: 2005
DOI: 10.1049/EL:20050037
Bragg-assisted parametric amplification of short optical pulses
Publisher: Optica Publishing Group
Date: 15-03-1996
DOI: 10.1364/OL.21.000420
Abstract: Parametric lification of pulses in Bragg gratings is investigated numerically. Gain is observed for a much larger range of parameters than in uniform media. This is explained in terms of grating-assisted phase matching. In contrast to that for cw results, the input signal pulse need not be tuned to a particular frequency. Rather, through cross-phase modulation the signal self-locks to the correct frequency for growth.
Spontaneous Emission suppression via quantum path interference in coupled microcavities
Publisher: American Physical Society (APS)
Date: 16-03-2006
Switching dynamics of finite periodic nonlinear media: A numerical study
Publisher: American Physical Society (APS)
Date: 09-1990
High-Q cavities in photonic crystal slab heterostructures formed by variation in the refractive index
Publisher: IEEE
Date: 07-2007
Polarization instability in a waveguide geometry
Publisher: Optica Publishing Group
Date: 15-02-1991
DOI: 10.1364/OL.16.000202
Abstract: We show theoretically that polarization instability can be observed in planar optical waveguides. Such instability would lead to energy exchange between the spatial solitons associated with the TE(0) and TM(0) waveguide modes as well as to litude-modulation gain, which was recently observed in an optical-fiber geometry.
Power estimates for the launching of gap solitons in nonuniform gratings
Publisher: Elsevier BV
Date: 12-1994
Calculations of air-guided modes in photonic crystal fibers using the multipole method
Publisher: Optica Publishing Group
Date: 17-12-2001
DOI: 10.1364/OE.9.000721
Abstract: We demonstrate that a combination of multipole and Bloch methods is well suited for calculating the modes of air core photonic crystal fibers. This includes determining the reflective properties of the cladding, which is a prerequisite for the modal calculations. We demonstrate that in the presence of absorption, the modal losses can be substantially smaller than in the corresponding bulk medium.
Propagation of nonlinear pulses in chirped fiber gratings
Publisher: American Physical Society (APS)
Date: 08-2000
Abstract: The propagation of nonlinear optical pulses in chirped fiber gratings is studied. The dynamics is analyzed on the basis of the inhomogeneous nonlinear Schrodinger equation. By using perturbation theory we demonstrate that the inhomogeneity affects the litude and the width, as well as the phase and the velocity of the soliton. The dynamics of a multisoliton pulse (breather) in chirped gratings is also discussed. It is shown that the velocity variation of in idual solitons leads to the breaking of a bound multisoliton state. This process manifests itself as the pulse splitting that is experimentally observed by other authors. Numerical simulations of the pulse dynamics agree well with analytical results for wide range of parameters.
Sensitive method for measuring third order nonlinearities in compact dielectric and hybrid plasmonic waveguides
Publisher: The Optical Society
Date: 07-01-2016
DOI: 10.1364/OE.24.000545
Optimising broadband tunable wavelength conversion in fibre optical parametric amplifiers
Publisher: IEEE
Date: 2003
Parametric amplification in presence of dispersion fluctuations
Publisher: Optica Publishing Group
Date: 2004
Abstract: Parametric lification in fibers with dispersion fluctuations is analyzed. The fluctuations are modelled as a stochastic process, with their size at a given position modelled as a Gaussian, and the autocorrelation decreasing exponentially. Two models are studied: in one the dispersion is piecewise constant, while in the other it is continuous. We find that the lification does not depend on the models' details and that only fluctuations with long correlation lengths affect the lification significantly.
Optical filters based on dynamic localization in curved coupled optical waveguides
Publisher: Elsevier BV
Date: 03-2005
Cavity Optical Pulse Extraction: ultra-short pulse generation as seeded Hawking radiation
Publisher: Springer Science and Business Media LLC
Date: 24-09-2013
DOI: 10.1038/SREP02607
The LifeCycle Project-EU Child Cohort Network: a federated analysis infrastructure and harmonized data of more than 250,000 children and parents
Publisher: Springer Science and Business Media LLC
Date: 07-2020
DOI: 10.1007/S10654-020-00662-Z
Abstract: Early life is an important window of opportunity to improve health across the full lifecycle. An accumulating body of evidence suggests that exposure to adverse stressors during early life leads to developmental adaptations, which subsequently affect disease risk in later life. Also, geographical, socio-economic, and ethnic differences are related to health inequalities from early life onwards. To address these important public health challenges, many European pregnancy and childhood cohorts have been established over the last 30 years. The enormous wealth of data of these cohorts has led to important new biological insights and important impact for health from early life onwards. The impact of these cohorts and their data could be further increased by combining data from different cohorts. Combining data will lead to the possibility of identifying smaller effect estimates, and the opportunity to better identify risk groups and risk factors leading to disease across the lifecycle across countries. Also, it enables research on better causal understanding and modelling of life course health trajectories. The EU Child Cohort Network, established by the Horizon2020-funded LifeCycle Project, brings together nineteen pregnancy and childhood cohorts, together including more than 250,000 children and their parents. A large set of variables has been harmonised and standardized across these cohorts. The harmonized data are kept within each institution and can be accessed by external researchers through a shared federated data analysis platform using the R-based platform DataSHIELD, which takes relevant national and international data regulations into account. The EU Child Cohort Network has an open character. All protocols for data harmonization and setting up the data analysis platform are available online. The EU Child Cohort Network creates great opportunities for researchers to use data from different cohorts, during and beyond the LifeCycle Project duration. It also provides a novel model for collaborative research in large research infrastructures with in idual-level data. The LifeCycle Project will translate results from research using the EU Child Cohort Network into recommendations for targeted prevention strategies to improve health trajectories for current and future generations by optimizing their earliest phases of life.
All-optical switching and two-photon absorption effects in long- period gratings in As2Se3 chalcogenide fibre
Publisher: IEEE
Date: 06-2007
Figure of merit for Kerr nonlinear plasmonic waveguides
Publisher: Wiley
Date: 23-05-2016
Editorial: Optics Express — Reaching Maturity
Publisher: The Optical Society
Date: 07-11-2017
DOI: 10.1364/OE.25.029010
Diamond based photonic crystal microcavities
Publisher: Optica Publishing Group
Date: 2006
DOI: 10.1364/OE.14.003556
Abstract: Diamond based technologies offer a material platform for the implementation of qubits for quantum computing. The photonic crystal architecture provides the route for a scalable and controllable implementation of high quality factor (Q) nanocavities, operating in the strong coupling regime for cavity quantum electrodynamics. Here we compute the photonic band structures and quality factors of microcavities in photonic crystal slabs in diamond, and compare the results with those of the more commonly-used silicon platform. We find that, in spite of the lower index contrast, diamond based photonic crystal microcavities can exhibit quality factors of Q=3.0x10(4), sufficient for proof of principle demonstrations in the quantum regime.
Dispersion engineering of highly nonlinear As_2S_3 waveguides for parametric gain and wavelength conversion
Publisher: Optica Publishing Group
Date: 2007
DOI: 10.1364/OE.15.009458
Abstract: We numerically demonstrate the use of waveguide dispersion to shift the zero-dispersion wavelength of an As(2)S(3) waveguide to telecom wavelengths. The device implications for parametric gain and wavelength-conversion via four-wave mixing are investigated, giving an operating bandwidth of 550 nm. We also show that the photosensitivity of chalcogenide can be used for post-fabrication tuning of waveguide dispersion characteristics.
Delay-tunable gap-soliton-based slow-light system
Publisher: Optica Publishing Group
Date: 2006
DOI: 10.1364/OE.14.011987
Abstract: We numerically and analytically evaluate the delay of solitons propagating slowly, and without broadening, in an apodized Bragg grating. Simulations indicate that a 100 mm Bragg grating with Deltan = 10-3 can delay sub-nanosecond pulses by nearly 20 pulse widths without any change in the output pulse width. Delay tunability is achieved by simultaneously adjusting the launch power and detuning. A simple analytic model is developed to describe the monotonic dependence of delay on Deltan and compared with simulations. As the intensity may be greatly enhanced due to a reduced velocity, a procedure for improving the delay while avoiding material damage is outlined.
Dispersion of optical fibers with far off-resonance gratings
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 2001
DOI: 10.1109/50.971682
Analysis and design of fibers for pure-quartic solitons
Publisher: The Optical Society
Date: 16-03-2018
DOI: 10.1364/OE.26.007786
Multi-order dispersion engineering for optimal four-wave mixing
Publisher: Optica Publishing Group
Date: 09-05-2008
DOI: 10.1364/OE.16.007551
Abstract: Four-wave mixing in high refractive index materials, such as chalcogenide glass or semiconductors, is promising because of their large cubic nonlinearity. However, these materials tend to have normal dispersion at telecom wavelengths, preventing phase matched operation. Recent work has shown that the waveguide dispersion in strongly confining guided-wave structures can lead to anomalous dispersion, but the resulting four-wave mixing has limited bandwidth because of negative quartic dispersion. Here we first show that the negative quartic dispersion is an inevitable consequence of this dispersion engineering procedure. However, we also demonstrate that a slight change in the procedure leads to positive quartic dispersion, resulting in a superior bandwidth. We give an ex le in which the four-wave mixing bandwidth is doubled in this way.
Spectrally periodic pulses for enhancement of optical nonlinear effects
Publisher: Springer Science and Business Media LLC
Date: 16-12-2021
Modulation-instability and pulse-train generation in a highly nonlinear Bragg grating
Publisher: IEEE
Date: 2008
Effective-medium approach for counterpropagating waves in nonuniform Bragg gratings
Publisher: Optica Publishing Group
Date: 05-1997
Canonical quantization of macroscopic electrodynamics in a linear, inhomogeneous magnetoelectric medium
Publisher: American Physical Society (APS)
Date: 21-03-2013
Optical push broom
Publisher: Optica Publishing Group
Date: 07-1992
DOI: 10.1364/OL.17.000914
Abstract: It is shown that the energy of a weak probe, copropagating with a strong pump pulse through a fiber grating, can be made to heap up on the pump's leading edge.
Dispersionless slow light using gap solitons
Publisher: Springer Science and Business Media LLC
Date: 22-10-2006
DOI: 10.1038/NPHYS438
Narrow-band spectral enhancement of a self-phase modulated pulse
Publisher: IEEE
Date: 05-2007
Green function method for nonlinear elastic waves in layered media
Publisher: AIP Publishing
Date: 15-10-2001
DOI: 10.1063/1.1392960
Abstract: We construct the Green function for an elastic medium with a plane source. This Green function is particularly helpful in the analysis of weakly nonlinear problems, such as occur in nondestructive acoustic evaluation of bonded structures. By using a perturbative approach we describe the litude distribution of the second harmonic of the driving frequency by linear equations with sources. In deriving the Green function we include both longitudinal and transverse polarizations and consider an arbitrary direction of the wave vector with respect to the layer normal. We show how this Green function can be combined with the transfer matrix approach to calculate the fields in layered structures. The ex les of second harmonic generation from half space and a single layer are considered.
Metamaterial control of stimulated Brillouin scattering
Publisher: The Optical Society
Date: 11-05-2016
DOI: 10.1364/OL.41.002338
Enhancement of emission due to local density of states (LDOS) effects in 2-D photonic crystal tapered optical fibre
Publisher: IEEE
Date: 2006
Comb filters based on superstructure rocking filters in photosensitive optical fibers
Publisher: Elsevier BV
Date: 08-1997
Dynamic localization in continuous ac electric fields
Publisher: American Physical Society (APS)
Date: 23-10-2002
Suppression of Raman shift in fibres near zero-dispersion piont
Publisher: IEEE
Date: 07-2006
Electromagnetic localization in dispersive stratified media with random loss and gain
Publisher: American Physical Society (APS)
Date: 06-1998
Soliton mediated optical quantization in the transmission of one-dimensional photonic crystals
Publisher: Optica Publishing Group
Date: 28-05-2010
DOI: 10.1364/OE.18.012708
Effective photons in weakly absorptive dielectric media and the Beer-Lambert-Bouguer law
Publisher: IOP Publishing
Date: 29-04-2014
A 90-nm-thick graphene metamaterial for strong and extremely broadband absorption of unpolarized light
Publisher: Springer Science and Business Media LLC
Date: 18-03-2019
High-Q cavity design in photonic crystal heterostructures
Publisher: IEEE
Date: 05-2008
Optical rogue waves and soliton turbulence in nonlinear fibre optics
Publisher: IEEE
Date: 06-2009
Complete absorption of broadband, unpolarized light in a deep-subwavelength graphene metamaterial
Publisher: OSA
Date: 2017
Second-harmonic generation in second-harmonic fiber bragg gratings
Publisher: Optica Publishing Group
Date: 20-06-1996
DOI: 10.1364/AO.35.003211
Exact dynamic localization in curved AlGaAs optical waveguide arrays
Publisher: IEEE
Date: 05-2007
Optimal poling of nonlinear photonic crystals for frequency conversion
Publisher: Optica Publishing Group
Date: 02-2003
DOI: 10.1364/OL.28.000188
Abstract: Nonlinear photonic crystals formed by two-dimensional periodic poling of the quadratic susceptibility chi(2) can support quasi-phase-matched harmonic generation. The frequency-conversion efficiency depends on the photonic crystal's poling pattern through certain Fourier coefficients of the poling function. A procedure is described for finding those poling patterns that are most efficient for any specific quasi-phase-matched frequency-conversion scheme.
Photonic Crystal Fibers as a Platform for Pure-Quartic Solitons
Publisher: OSA
Date: 2017
High-Q cavities in photosensitive photonic crystals
Publisher: Optica Publishing Group
Date: 02-02-2007
DOI: 10.1364/OL.32.000542
Abstract: We propose a novel concept for creating high-Q cavities in photonic crystal slabs (PCSs) composed of photosensitive material. To date, high-Q cavities have been realized through the use of double heterostructures where the lattice geometry is altered via nanolithography. Here, we show that selective postexposure to light of a uniform PCS composed of photosensitive material, altering the refractive index permanently, can also yield high-Q microcavities. We show theoretically that high-Q cavities (up to Q = 1 x 10(6)) can be achieved with photoinduced index changes that are well within what can be achieved in chalcogenide glasses.
Theory of modulational instability in Bragg gratings with quadratic nonlinearity
Publisher: American Physical Society (APS)
Date: 05-1999
Abstract: Modulational instability in optical Bragg gratings with a quadratic nonlinearity is studied. The electric field in such structures consists of forward and backward propagating components at the fundamental frequency and its second harmonic. Analytic continuous wave (CW) solutions are obtained, and the intricate complexity of their stability, due to the large number of equations and number of free parameters, is revealed. The stability boundaries are rich in structures and often cannot be described by a simple relationship. In most cases, the CW solutions are unstable. However, stable regions are found in the nonlinear Schrödinger equation limit, and also when the grating strength for the second harmonic is stronger than that of the first harmonic. Stable CW solutions usually require a low intensity. The analysis is confirmed by directly simulating the governing equations. The stable regions found have possible applications in second-harmonic generation and dark solitons, while the unstable regions may be useful in the generation of ultrafast pulse trains at relatively low intensities.
Design, Fabrication and Characterisation of Chalcogenide-Based Photonic Crystal Slabs
Publisher: IEEE
Date: 06-2006
Resonance and scattering in microstructured optical fibers
Publisher: Optica Publishing Group
Date: 15-11-2002
DOI: 10.1364/OL.27.001977
Abstract: We present an investigation into the mechanism for guidance of microstructured optical fibers consisting of high-refractive-index cylinders embedded in a low-index background. A new guidance regime is identified in which the fibers' confinement losses depend strongly on wavelength and the positions of the loss minima and maxima depend on the scattering properties of in idual cylinders and only weakly on their position and number. We point out similarities between these results and those reported recently for two-dimensional antiresonant reflecting waveguides.
Gap solitary waves with gain and two-photon absorption
Publisher: American Physical Society (APS)
Date: 08-1993
Blazing evanescent grating orders: A spectral approach to beating the Rayleigh limit
Publisher: Optica Publishing Group
Date: 17-08-2010
DOI: 10.1364/OL.35.002846
Temperature and wavelength tuning of second-, third-, and fourth-harmonic generation in a two-dimensional hexagonally poled nonlinear crystal
Publisher: Optica Publishing Group
Date: 09-2002
Symmetries and invariant solutions of the planar paraxial wave equation in photosensitive media
Publisher: American Physical Society (APS)
Date: 17-06-2002
Stimulated Brillouin scattering enhancement in silicon inverse opal waveguides
Publisher: The Optical Society
Date: 19-10-2016
DOI: 10.1364/OE.24.025148
Doubly Enhanced Second Harmonic Generation through Structural and Epsilon-near-Zero Resonances in TiN Nanostructures
Publisher: American Chemical Society (ACS)
Date: 14-05-2018
Dispersion Engineering of Highly Nonlinear As<inf>2</inf>S<inf>3</inf> Waveguides for Parametric Gain and Wavelength Conversion
Publisher: IEEE
Date: 06-2007
Tunable narrow-band spectral peak imposed onto a soliton with an acoustic long-period grating
Publisher: SPIE
Date: 21-12-2007
DOI: 10.1117/12.761405
Experimental observation of linear pulses affected by high-order dispersion
Publisher: Optica Publishing Group
Date: 12-06-2023
DOI: 10.1364/OE.493367
Abstract: We experimentally study the linear propagation of optical pulses affected by high-order dispersion. We use a programmable spectral pulse-shaper that applies a phase that equals that which would result from dispersive propagation. The temporal intensity profiles of the pulses are characterized using phase-resolved measurements. Our results are in very good agreement with previous numerical and theoretical results, confirming that for high dispersion orders m the central part of the pulses follow the same evolution, with m only determining the rate of evolution.
Design of high-Q cavities in photonic crystal slab heterostructures by air-holes infiltration
Publisher: Optica Publishing Group
Date: 2006
DOI: 10.1364/OE.14.012451
Abstract: We design novel photonic crystal slab heterostructures, substituting the air in the holes with materials of refractive index higher than n=1. This can be achieved by infiltrating the photonic crystal slab (PCS) with liquid crystal, polymer or nano-porous silica. We find that the heterostructures designed in this way can have quality factors up to Q=10(6). This high-Q result is comparable with the result of previously reported designs in which the lattice is elongated in one direction. Unlike conventional heterostructures, our design does not require nanometre-scale changes in the geometry. Additionally, infiltrated PCS can be constructed at any time after PCS fabrication.
Bloch waves and Wannier functions in periodic superstructure Bragg gratings
Publisher: American Physical Society (APS)
Date: 05-09-2000
Microstructured optical fibers: where�??s the edge?
Publisher: The Optical Society
Date: 04-11-2002
DOI: 10.1364/OE.10.001285
Abstract: We establish that Microstructured Optical Fibers (MOFs) have a fundamental mode cutoff, marking the transition between modal confinement and non-confinement, and give insight into the nature of this transition through two asymptotic models that provide a mapping to conventional fibers. A small parameter space region where neither of these asymptotic models holds exists for the fundamental mode but not for the second mode we show that designs exploiting unique MOF characteristics tend to concentrate in this preferred region.
Two-dimensional treatment of the level shift and decay rate in photonic crystals
Publisher: American Physical Society (APS)
Date: 10-10-2005
Ring structures in microstructured polymer optical fibres
Publisher: Optica Publishing Group
Date: 17-12-2001
DOI: 10.1364/OE.9.000813
Abstract: Recent developments in polymer microstructured optical fibres allow for the realisation of microstructures in fibres that would be problematic to fabricate using glass-based capillary stacking. We present one class of such structures, where the holes lie on circular rings. A fibre of this type is fabricated and shown to be single moded for relatively long lengths of fibre, whereas shorter lengths are multimoded. An average index model for these fibres is developed. Comparison of its predictions to the calculated properties of the exact structure indicates that the ring structures emulate homogeneous rings of lower refractive index resulting in the ring structured fibres behaving approximately as cylindrically layered fibres.
Self-localized light: launching of low-velocity solitons in corrugated nonlinear waveguides
Publisher: Optica Publishing Group
Date: 15-08-1989
DOI: 10.1364/OL.14.000871
Abstract: We show that stationary gap solitons are just a limiting case of a wider set of (slowly) moving solitons associated with the photonic stop gap of a periodic nonlinear structure. We give an analytic description of these solitons and provide the prescription for launching such solitons in a realistic waveguide geometry.
Gap-soliton propagation in nonuniform gratings
Publisher: American Physical Society (APS)
Date: 05-1995
Nonlinear long-period gratings in As2Se3 chalcogenide fiber for all-optical switching
Publisher: AIP Publishing
Date: 10-03-2008
DOI: 10.1063/1.2898213
Abstract: We present experimental demonstration of all-optical switching using long-period gratings (LPGs) in highly nonlinear As2Se3 chalcogenide fiber. We use a 135mm grating which is generated using acoustic waves. We characterize the nonlinear pulse propagation through the LPG using picosecond pulses tuned to different wavelengths with respect to the grating resonance. We compare the results with numerical simulations and observe switching at pulse peak powers around 50W, two orders of magnitude smaller than previously demonstrated in silica.
Investigation of waveguide growth in photosensitive germanosilicate glass
Publisher: Optica Publishing Group
Date: 12-1996
Stationary and dynamical properties of pure-quartic solitons
Publisher: The Optical Society
Date: 25-06-2019
DOI: 10.1364/OL.44.003306
Flexible design of ultrahigh-Q microcavities in diamond-based photonic crystal slabs
Publisher: Optica Publishing Group
Date: 03-04-2009
DOI: 10.1364/OE.17.006465
Abstract: We design extremely flexible ultrahigh-Q diamond-based double-heterostructure photonic crystal slab cavities by modifying the refractive index of the diamond. The refractive index changes needed for ultrahigh-Q cavities with Q approximately 10(7), are well within what can be achieved (Delta n approximately 0.02). The cavity modes have relatively small volumes V<2 (lambda/n)(3), making them ideal for cavity quantum electro-dynamic applications. Importantly for realistic fabrication, our design is flexible because the range of parameters, cavity length and the index changes, that enables an ultrahigh-Q is quite broad. Furthermore as the index modification is post-processed, an efficient technique to generate cavities around defect centres is achievable, improving prospects for defect-tolerant quantum architectures.
All-optical regeneration based on a nonlinear long period grating
Publisher: Elsevier BV
Date: 03-2008
Semi-analytic method for slow light photonic crystal waveguide design
Publisher: Elsevier BV
Date: 10-2012
Omnidirectional field enhancements drive giant nonlinearities in epsilon-near-zero waveguides
Publisher: Optica Publishing Group
Date: 30-11-2020
DOI: 10.1364/OL.412761
Abstract: Bulk materials with a relative electric permittivity ε close to zero exhibit giant Kerr nonlinearities. However, harnessing this response in guided-wave geometries is not straightforward, due to the extreme and counterintuitive properties of such epsilon-near-zero materials. Here we investigate, through rigorous calculations of the nonlinear coefficient, how the remarkable nonlinear properties of such materials can be exploited in several structures, including bulk films, plasmonic nanowires, and metal nanoapertures. We find the largest nonlinear response when the modal area and group velocity are simultaneously minimized, leading to omnidirectional field enhancement. This insight will be key for understanding nonlinear nanophotonic systems with extreme nonlinearities and points to new design paradigms.
Suppression of stimulated Brillouin scattering in composite media
Publisher: IEEE
Date: 07-2016
Bloch Oscillations in an Array of Curved Optical Waveguides
Publisher: American Physical Society (APS)
Date: 02-08-1999
Theory of modulational instability in fiber Bragg gratings
Publisher: Optica Publishing Group
Date: 11-1998
Slow-light and evanescent modes at interfaces in photonic crystal waveguides: Optimal extraction from experimental near-field measurements
Publisher: The Optical Society
Date: 31-03-2011
Frozen and broadband slow light in coupled periodic nanowire waveguides
Publisher: The Optical Society
Date: 30-01-2012
DOI: 10.1364/OE.20.003519
Scaling Properties of Pure-Quartic Solitons
Publisher: OSA
Date: 2017
Kerr effect in hybrid plasmonic waveguides
Publisher: The Optical Society
Date: 22-04-2016
Symmetry and degeneracy in microstructured optical fibers
Publisher: Optica Publishing Group
Date: 15-04-2001
DOI: 10.1364/OL.26.000488
Abstract: The symmetry of an optical waveguide determines its modal degeneracies. A fiber with rotational symmetry of order higher than 2 has modes that either are nondegenerate and support the complete fiber symmetry or are twofold degenerate pairs of lower symmetry. The latter case applies to the fundamental modes of perfect microstructured optical fibers, guaranteeing that such fibers are not birefringent. We explore two numerical methods and demonstrate their agreement with these symmetry constraints.
Fabrication of rocking filters at 193 nm
Publisher: Optica Publishing Group
Date: 10-1996
DOI: 10.1364/OL.21.001550
Abstract: We show that rocking filters can be fabricated in photosensitive elliptical-core fibers with 193-nm radiationfrom an excimer laser by the external point-by-point fabrication technique. We find that the writing efficiency at this wavelength is significantly larger than that at 240 nm. Furthermore, the growth dynamics of rocking filters fabricated with these two wavelengths are dissimilar, which may suggest different photosensitive mechanisms.
Enhanced acousto-optic properties in layered media
Publisher: American Physical Society (APS)
Date: 23-08-2017
Application of an ARROW model for designing tunable photonic devices
Publisher: Optica Publishing Group
Date: 19-04-2004
Abstract: Microstructured optical fibers with the low refractive index core surrounded by high refractive index cylindrical inclusions reveal several intriguing properties. Firstly, there is a guiding regime in which the fibers' confinement loss is strongly dependent of wavelength. In this regime, the positions of loss maxima are largely determined by the in idual properties of high index inclusions rather than their position and number. Secondly, the spectra of these fibers can be tuned by changing the refractive index of the inclusions. In this paper we review transmission properties of these fibers and discuss their potential applications for designing tunable photonic devices.
Optimization of the soliton self-frequency shift in a tapered photonic crystal fiber
Publisher: Optica Publishing Group
Date: 16-10-2009
Extensions and generalizations of an envelope-function approach for the electrodynamics of nonlinear periodic structures
Publisher: American Physical Society (APS)
Date: 05-1989
Solitary wave solutions in nonlinear media with quartic and quadratic dispersion—implications for high-power lasers
Publisher: OSA
Date: 2018
Three-dimensional local density of states in a finite two-dimensional photonic crystal composed of cylinders
Publisher: American Physical Society (APS)
Date: 11-04-2003
Plasmonic Sensors beyond the Phase Matching Condition: A Simplified Approach
Publisher: MDPI AG
Date: 19-12-2022
DOI: 10.3390/S22249994
Abstract: The conventional approach to optimising plasmonic sensors is typically based entirely on ensuring phase matching between the excitation wave and the surface plasmon supported by the metallic structure. However, this leads to suboptimal performance, even in the simplest sensor configuration based on the Otto geometry. We present a simplified coupled mode theory approach for evaluating and optimizing the sensing properties of plasmonic waveguide refractive index sensors. It only requires the calculation of propagation constants, without the need for calculating mode overlap integrals. We apply our method by evaluating the wavelength-, device length- and refractive index-dependent transmission spectra for an ex le silicon-on-insulator-based sensor of finite length. This reveals all salient spectral features which are consistent with full-field finite element calculations. This work provides a rapid and convenient framework for designing dielectric-plasmonic sensor prototypes—its applicability to the case of fibre plasmonic sensors is also discussed.
Dynamics of ultrashort pulses near zero dispersion wavelength
Publisher: Optica Publishing Group
Date: 11-2006
Effects of disorder in two-dimensional photonic crystal waveguides
Publisher: American Physical Society (APS)
Date: 22-08-2003
Ultracompact resonant filters in photonic crystals
Publisher: Optica Publishing Group
Date: 15-12-2003
DOI: 10.1364/OL.28.002452
Abstract: A novel design for an ultracompact, high-Q notch-rejection filter is presented, and an analytic expression for the transmission properties is derived. This folded directional coupler shares the properties of a Fabry-Perot resonator and a directional coupler. We compare and contrast the device to high-Q Fabry-Perot cavities in photonic crystal waveguides.
Electron dynamics and dynamic localization in asymmetric periodic potentials
Publisher: American Physical Society (APS)
Date: 15-03-2004
Novel characterization technique with 0.5 ppm spatial accuracy of fringe period in Bragg gratings.
Publisher: Optica Publishing Group
Date: 21-04-2003
DOI: 10.1364/OE.11.000838
Abstract: We demonstrate a novel method that can detect period fluctuations of periodic structures such as fiber Bragg gratings at an accuracy of approximately 0.5 ppm. These fluctuations can consist of chirp rates, phase shifts etc. The method can also be used to measure phase masks or work as a position control device with spatial resolution in the order of 10 nm. The technique is a modified side diffraction method with interference between two diffraction orders.
Efficient collinear fourth harmonic generation by two-channel multistep cascading in a two-dimensional nonlinear photonic crystal
Publisher: Opt. Soc. America
Date: 2001
Effects of disorder on wave propagation in two-dimensional photonic crystals
Publisher: American Physical Society (APS)
Date: 11-1999
Abstract: The electromagnetic transmittance of disordered two-dimensional photonic crystals composed of circular cylinders is investigated as a function of wavelength and polarization. At short wavelengths, the transmittance shows a band structure similar to that found in the optical absorption spectrum of amorphous semiconductors, with impurity states increasingly appearing on the long wavelength side of the band gaps as the degree of disorder is increased. In the long-wavelength limit, Anderson localization of waves is found, provided that the wavelength is not so large that the random photonic crystal can be viewed as homogeneous. The localization properties in this regime are studied and an analytic expression for the dependence of the localization length on wavelength is derived. In the limit of extremely long wavelengths, the system homogenizes and can be replaced by an equivalent one with uniform effective refractive index, whose form is derived for both polarizations. Analysis of the crossover between localization and homogenization is also presented.
High-order dispersion engineering for optimal four-wave mixing
Publisher: No publisher found
Date: 2008
Gap solitary waves with gain and loss
Publisher: American Physical Society (APS)
Date: 03-1991
Spontaneous symmetry breaking in a double-defect nonlinear grating
Publisher: American Physical Society (APS)
Date: 13-09-2013
Wavelength conversion bandwidth in fiber based optical parametric amplifiers
Publisher: Optica Publishing Group
Date: 05-05-2003
DOI: 10.1364/OE.11.001002
Abstract: We propose a systematic approach to evaluating and optimising the wavelength conversion bandwidth and gain ripple of fourwave mixing based fi ber optical wavelength converters. Truly tunable wavelength conversion in these devices requires a highly tunable pump. For a given fi ber dispersion slope, we fi nd an optimum dispersion curvature that maximises the wavelength conversion bandwidth.
Tunable spectral enhancement of fiber supercontinuum
Publisher: Optica Publishing Group
Date: 05-06-2007
DOI: 10.1364/OL.32.001644
Abstract: We demonstrate tunable spectral enhancement of the supercontinuum generated in a microstructured fiber with a fiber long-period grating. The long-period grating leads to phase distortion and loss that, with subsequent high-intensity propagation in uniform fiber, evolves into an enhancement around the grating's resonant wavelengths. Wavelength tunability is achieved by varying the temperature or the ambient refractive index, and the spectral peak can be extinguished by immersing the grating in index-matching oil.
Resonances in microstructured optical waveguides
Publisher: Optica Publishing Group
Date: 19-05-2003
DOI: 10.1364/OE.11.001243
Abstract: We propose a simple physical model that predicts the optical properties of a class of microstructured waveguides consisting of high-index inclusions that surround a low-index core. On the basis of this model, it is found that a large regime exists where transmission minima are determined by the geometry of the in idual high-index inclusions. The locations of these minima are found to be largely unaffected by the relative position of the inclusions. As a result of this insight the difficult problem of analyzing the properties of complex structures can be reduced to the much simpler problem of analyzing the properties of an in idual high-index inclusion in the structure.
Photonic band structure calculations using scattering matrices
Publisher: American Physical Society (APS)
Date: 09-2001
Coupled-mode theory for light propagation through deep nonlinear gratings
Publisher: American Physical Society (APS)
Date: 08-1996
Bloch mode scattering matrix methods for modeling extended photonic crystal structures. I. Theory
Publisher: American Physical Society (APS)
Date: 15-11-2004
Nonlinear lattices and gap solitons
Publisher: American Physical Society (APS)
Date: 11-1993
Pulse length dependent near-infrared ultrafast nonlinearity of gold by self-phase modulation
Publisher: AIP Publishing
Date: 17-08-2020
DOI: 10.1063/5.0020588
Abstract: We investigate the pulse length dependence of the third-order nonlinear response of a gold film using pulse widths between 325 and 650 fs at λ=1320 nm via a sensitive cut-pulse technique that measures background-free self-phase modulation. We find a cubic dependence of the transmitted nonlinear power on incident peak intensity that is independent of the pulse width in this range to within experimental accuracy. We estimate a value of χ3=8±3×10−18 m2/V2 by fitting experimental data to numerical simulations accounting for both losses and reflections at each film interface. These results provide valuable insights into near-infrared nonlinear plasmonic device designs.
Tunable spectral enhancement of supercontinuum with long-period gratings
Publisher: IEEE
Date: 06-2007
Dispersion control in coated wire media slabs
Publisher: The Optical Society
Date: 27-01-2017
Calculation of optical absorption associated with indirect transitions in silicon n-i-p-i structures
Publisher: AIP Publishing
Date: 15-09-1988
DOI: 10.1063/1.341534
Abstract: Indirect transitions in silicon n-i-p-i structures are investigated theoretically. A method is used in which these structures are characterized by their internal electric fields, which change the absorption in a Franz–Keldysh-like manner. Our calculations, in which the influence of excitons is included, are based upon the effective-mass approximation. The conclusions are that the absorption only increases in an energy region for which the absorption is very small in the first place. It is further shown that excitonic effects are very important in this geometry, in spite of the strong internal electric fields, or, equivalently, in spite of the large spatial separation of the carriers.
Simple model for orthogonal and angled coupling in dielectric-plasmonic waveguides
Publisher: The Optical Society
Date: 09-07-2019
DOI: 10.1364/OE.27.020444
Slow light enhanced nonlinear optics in periodic structures
Publisher: IOP Publishing
Date: 24-09-2010
Two-dimensional poling patterns for 3rd and 4th harmonic generation
Publisher: Optica Publishing Group
Date: 05-05-2003
DOI: 10.1364/OE.11.001008
Abstract: We find globally optimal poling patterns for 2-dimensional chi(2) photonic crystals for 3rd and 4th harmonic generation.
Superstructure gratings in the tight-binding approximation
Publisher: American Physical Society (APS)
Date: 03-1998
Corrections to coupled mode theory for deep gratings
Publisher: American Physical Society (APS)
Date: 04-2000
Abstract: We generalize the standard coupled mode equations describing interactions between forward and backward propagating waves in a nonlinear optical Bragg grating. Including the lowest order corrections of the grating depth, we obtain a Hamiltonian system that can be regarded as an extension of the usual coupled mode equations for shallow gratings. The results are consistent with existing results based on a Bloch wave expansion. We also obtain exact traveling solitary wave solutions, that can be regarded as a generalized gap soliton, modified by the grating's depth.
Canonical quantization of macroscopic electrodynamics in a linear magneto-electric medium
Publisher: AIP
Date: 2012
DOI: 10.1063/1.4750096
Schrödinger equation description for cross-phase modulation in grating structures
Publisher: American Physical Society (APS)
Date: 06-1994
Dynamical localization and AC Bloch oscillations in periodic optical waveguide arrays
Publisher: Elsevier BV
Date: 03-2003
Observation of Self-Trapping of Light in a Self-Written Channel in a Photosensitive Glass
Publisher: American Physical Society (APS)
Date: 04-05-1998
Conduction band of Si-Ge_{x}Si_{1-x} superlattices using the envelope-function approximation
Publisher: American Physical Society (APS)
Date: 1987
Coupled modes and the nonlinear Schrödinger equation
Publisher: American Physical Society (APS)
Date: 07-1990
Nonlinear optics in fiber gratings
Publisher: Elsevier BV
Date: 07-1996
Establishing the nonlinear coefficient for extremely lossy waveguides
Publisher: Optica Publishing Group
Date: 04-09-2020
DOI: 10.1364/OL.401541
Abstract: The nonlinear coefficient γ is central to the study of cubically nonlinear optical guided-wave structures. It is well understood for lossless waveguides, but less so for lossy systems. A number of methods for calculating γ in lossy systems have been proposed, each resulting in different expressions. Here we identify the most accurate and practical expression for γ . We do so by applying the different expressions γ to air–gold surface plasmon polariton modes in the interband region of gold and compare with a fully numerical iterative method. We thus resolve the outstanding issue of which expression for the nonlinear coefficient to use for lossy waveguides, enabling new insights into the nonlinear response of such systems.
Comparison of the sensitivity of air and dielectric modes in photonic crystal slab sensors
Publisher: Optica Publishing Group
Date: 03-08-2009
DOI: 10.1364/OE.17.014552
Abstract: Optical cavities provide a route to sensing through the shift of the optical resonant peak. However, effective sensing with optical cavities requires the optimization of the modal quality factor, Q, and the field overlap with the s le, f. For a photonic crystal slab (PCS) this figure of merit, M = fQ, involves two competing effects. The air modes usually have large f but small Q, whereas the dielectric modes have high-Q and small f. We compare the sensitivity of air and dielectric modes for different PCS cavity designs and account for loss associated with absorption by the sensed s le or its host liquid. We find that optimizing Q at the expense of f is the most beneficial strategy, and modes deriving from the dielectric bands are thus preferred.
Launching of gap solitons in nonuniform gratings
Publisher: Optica Publishing Group
Date: 15-02-1993
DOI: 10.1364/OL.18.000269
Coupled mode equations with free carrier effects: a numerical solution
Publisher: Springer Science and Business Media LLC
Date: 03-1994
DOI: 10.1007/BF00384675
Absence of Galilean invariance for pure-quartic solitons
Publisher: American Physical Society (APS)
Date: 29-10-2021
A theory of waveguide design for plasmonic nanolasers
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8NR04898C
Abstract: We propose a theory for the waveguide design for plasmonic nanolasers, and extend it to that for nonlinear plasmonic devices.
Nonlinear coupled-mode equations on a finite interval: a numerical procedure
Publisher: Optica Publishing Group
Date: 02-1991
Soliton solutions in Rowland ghost gaps
Publisher: American Physical Society (APS)
Date: 12-1995
Self-similar propagation of optical pulses in fibers with positive quartic dispersion
Publisher: Optica Publishing Group
Date: 17-06-2020
DOI: 10.1364/OL.393835
Abstract: We study the propagation of ultrashort pulses in optical fiber with gain and positive (or normal) quartic dispersion by self-similarity analysis of the modified nonlinear Schrödinger equation. We find an exact asymptotic solution, corresponding to a triangle-like T 4 / 3 intensity profile, with a T 1 / 3 chirp, which is confirmed by numerical simulations. This solution follows different litude and width scaling compared to the conventional case with quadratic dispersion. We also suggest, and numerically investigate, a fiber laser consisting of components with positive quartic dispersion that emits quartic self-similar pulses.
Dark solitons under higher-order dispersion
Publisher: Optica Publishing Group
Date: 23-02-2022
DOI: 10.1364/OL.450835
Abstract: We show theoretically that stable dark solitons can exist in the presence of pure quartic dispersion, and also in the presence of both quadratic and quartic dispersive effects, displaying a much greater variety of possible solutions and dynamics than for pure quadratic dispersion. The interplay of the two dispersion orders may lead to oscillatory non-vanishing tails, which enables the possibility of bound, potentially stable, multi-soliton states. Dark soliton-like states that connect to low- litude oscillations are also shown to be possible. Dynamical evolution results corroborate the stability picture obtained, and possible avenues for dark soliton generation are explored.
Bragg Grating Solitons
Publisher: American Physical Society (APS)
Date: 04-03-1996
Measurements of poloidal rotation velocity using cross-correlation spectroscopy in the H-1 heliac
Publisher: AIP Publishing
Date: 03-2003
DOI: 10.1063/1.1537032
Abstract: A correlation spectroscopy diagnostic [M.G. Shats and J. Howard, Fusion Eng. Des. 34–35, 271 (1997)] measures fluctuation spectra and local fluctuation intensities in a radiation-dominated plasma, such as the low-temperature plasma in the H-1 heliac (Te& eV, ne& ×1018 m−3). When the fluctuation coherence lengths in the poloidal and radial directions are shorter than the plasma radius, the cross-correlation function of the two crossed-sightline fluctuating intensities contains information about the fluctuations litude and their phase in the intersection volume. The optical setup on the H-1 heliac uses two nearly orthogonal views to image 20 optical fibers arranged into two linear arrays in the plasma poloidal cross section. A matrix of 10×10 cross-correlation functions is then analyzed to determine the poloidal phase velocity of the fluctuations, poloidal and radial correlation lengths, and the radial profiles of the fluctuations intensity. The results on the poloidal propagation velocity measured using the cross-correlation technique (time delay of the cross-correlation functions) are compared with the poloidal velocity measured using poloidally separated probes in the plasma. Both velocities are found to be in good agreement and also agree well with the E×B drift velocity in this plasma.
Artificial electrostriction in composite materials
Publisher: The Optical Society
Date: 10-07-2017
Bloch method for the analysis of modes in microstructured optical fibers
Publisher: Optica Publishing Group
Date: 2004
Abstract: We discuss a transform technique for analyzing the wave vector content of microstructured optical fiber (MOF) modes, which is computationally efficient and gives good physical insight into the nature of the mode. In particular, if the mode undergoes a transition from a bound state to an extended state, this is evident in the spreading-out of its transform. The method has been implemented in the multipole formulation for finding MOF modes, but are capable of adaptation to other formulations.
Reduction of spontaneous emission in tapered photonic crystal fibres
Publisher: IEEE
Date: 2005
Wannier-function analysis of light propagation in linearly chirped superstructure Bragg gratings
Publisher: American Physical Society (APS)
Date: 11-04-2001
Collisions and turbulence in optical rogue wave formation
Publisher: Elsevier BV
Date: 02-2010
Gain-flattening filter design using rotationally symmetric crossed gratings
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 09-2003
Fundamental Limitations to the Ultimate Kerr Nonlinear Performance of Plasmonic Waveguides
Publisher: American Chemical Society (ACS)
Date: 12-01-2018
Bistable switching and reshaping of optical pulses in a Bragg grating cavity
Publisher: The Optical Society
Date: 12-11-2010
Dispersionless slow light with 5-pulse-width delay in fibre Bragg grating
Publisher: Institution of Engineering and Technology (IET)
Date: 2007
DOI: 10.1049/EL:20072474
Insights from a systematic study of crosstalk in adiabatic couplers
Publisher: The Optical Society
Date: 28-02-2019
Ultrahigh-Q microcavities in diamond-based photonic crystal slabs
Publisher: IEEE
Date: 06-2009
Confinement losses in microstructured optical fibers
Publisher: Optica Publishing Group
Date: 11-2001
DOI: 10.1364/OL.26.001660
Abstract: We describe a multipole formulation that can be used for high-accuracy calculations of the full complex propagation constant of a microstructured optical fiber with a finite number of holes. We show how the imaginary part of the microstructure, which describes confinement losses not associated with absorption, varies with hole size, the number of rings of holes, and wavelength, and give the minimum number of rings of holes required for a specific loss for given parameters.
Nonlinear pulse reflections from chirped fiber gratings
Publisher: Optica Publishing Group
Date: 23-11-1998
DOI: 10.1364/OE.3.000465
Abstract: We study the nonlinear evolution of optical pulses reflected from a chirped fiber grating experimentally and with numerical simulations. Over a broad range of grating parameters the nonlinearly reflected pulse splits into a pair of pulses in the range of incident pulse intensities where the transmitted pulse is a single narrowed pulse evolving into a fundamental soliton.
Pulse train generation in a highly nonlinear chalcogenide (As<inf>2</inf>S<inf>3</inf>) waveguide Bragg grating
Publisher: IEEE
Date: 07-2008
Theory of dispersive wave frequency shift via trapping by a soliton in an axially nonuniform optical fiber
Publisher: The Optical Society
Date: 08-10-2010
Self-Stabilization of Light Sails by Damped Internal Degrees of Freedom
Publisher: American Physical Society (APS)
Date: 07-02-2022
Direct Imaging of the Energy-Transfer Enhancement between Two Dipoles in a Photonic Cavity
Publisher: American Physical Society (APS)
Date: 03-2019
Soliton propagation in twin-core fiber rocking filters
Publisher: Optica Publishing Group
Date: 15-11-1993
DOI: 10.1364/OL.18.001905
Abstract: We investigate nonlinear pulse propagation in a twin-core fiber whose birefhingent axes have been periodically rocked at the beat length of the cores. We find that the four coupled-mode equations that describe this system can be reduced to a pair of coupled nonlinear Schrödinger equations under suitable conditions. Consequently we find two new types of compound soliton: one that propagates down both cores of the fiber simultaneously and another that couples completely between the cores of this structure without degradation. These solitons typically have a peak power of ~1 W and a length of ~10 ps.
Possibilities for the observation of gap solitons in waveguide geometries
Publisher: Optica Publishing Group
Date: 09-1989
Multipole method for microstructured optical fibers. II. Implementation and results
Publisher: Optica Publishing Group
Date: 10-2002
Dispersionless and Tunable Slow Light in Bragg Gratings
Publisher: Optica Publishing Group
Date: 12-2007
Gap-soliton trapping in random one-dimensional gratings
Publisher: American Physical Society (APS)
Date: 22-09-2008
Modular nonlinear hybrid plasmonic circuit
Publisher: Springer Science and Business Media LLC
Date: 15-05-2020
DOI: 10.1038/S41467-020-16190-Z
Abstract: Photonic integrated circuits (PICs) are revolutionizing nanotechnology, with far-reaching applications in telecommunications, molecular sensing, and quantum information. PIC designs rely on mature nanofabrication processes and readily available and optimised photonic components (gratings, splitters, couplers). Hybrid plasmonic elements can enhance PIC functionality (e.g., wavelength-scale polarization rotation, nanoscale optical volumes, and enhanced nonlinearities), but most PIC-compatible designs use single plasmonic elements, with more complex circuits typically requiring ab initio designs. Here we demonstrate a modular approach to post-processes off-the-shelf silicon-on-insulator (SOI) waveguides into hybrid plasmonic integrated circuits. These consist of a plasmonic rotator and a nanofocusser, which generate the second harmonic frequency of the incoming light. We characterize each component’s performance on the SOI waveguide, experimentally demonstrating intensity enhancements of more than 200 in an inferred mode area of 100 nm 2 , at a pump wavelength of 1320 nm. This modular approach to plasmonic circuitry makes the applications of this technology more practical.
Large-bandwidth frequency conversion in high-NA step index optical fibers
Publisher: No publisher found
Date: 1998
DOI: 10.1109/3.663444
Analysis of self-written waveguides in photopolymers and photosensitive materials
Publisher: American Physical Society (APS)
Date: 1998
Analytic properties of photonic crystal superprism parameters
Publisher: American Physical Society (APS)
Date: 19-05-2005
General analytic expression and numerical approach for the Kerr nonlinear coefficient of optical waveguides
Publisher: The Optical Society
Date: 27-03-2017
DOI: 10.1364/OL.42.001329
Ideal mode expansion for planar optical waveguides: application to the TM–TM coupling coefficient for grating structures
Publisher: Optica Publishing Group
Date: 04-1990
Antisymmetric Grating Coupler: Experimental Results
Publisher: Optica Publishing Group
Date: 2003
DOI: 10.1364/AO.42.006578
Abstract: The principle of an antisymmetric grating coupler was recently proposed theoretically as a planar waveguide add-drop multiplexer. It has the potential to enhance significantly the functionality of an add-drop multiplexer based on grating-assisted coupling. Here we realize the concept experimentally in an all-fiber geometry. We show that conventional devices exhibit two high-reflection bands. In contrast, the antisymmetric grating coupler has only a single reflection band, thereby dramatically improving its filtering characteristics.
Stopping Light in its Tracks
Publisher: Optica Publishing Group
Date: 12-1996
Self-writing a waveguide in glass using photosensitivity
Publisher: Elsevier BV
Date: 09-1995
Two-dimensional local density of states in two-dimensional photonic crystals
Publisher: Optica Publishing Group
Date: 29-01-2001
DOI: 10.1364/OE.8.000191
Abstract: We calculate the two-dimensional local density of states (LDOS) for two-dimensional photonic crystals composed of a finite cluster of circular cylinders of infinite length. The LDOS determines the dynamics of radiation sources embedded in a photonic crystal. We show that the LDOS decreases exponentially inside the crystal for frequencies within a photonic band gap of the associated infinite array and demonstrate that there exist hot' and cold' spots inside the cluster even for wavelengths inside a gap, and also for wavelengths corresponding to pass bands. For long wavelengths the LDOS exhibits oscillatory behavior in which the local density of states can be more than 30 times higher than the vacuum level.
Diffusion and anomalous diffusion of light in two-dimensional photonic crystals
Publisher: American Physical Society (APS)
Date: 14-03-2003
Slow light with flat or offset band edges in few-mode fiber with two gratings
Publisher: Optica Publishing Group
Date: 2007
DOI: 10.1364/OE.15.017954
Abstract: We consider mode coupling in multimode optical fibers using either two Bragg gratings or a Bragg grating and a long-period grating. We show that the magnitude of the band edge curvature can be controlled leading to a flat, quartic band-edge or to two band edges at distinct, nonequivalent k-values, allowing precise control of slow light propagation.
Narrow-band spectral enhancement of a self-phase modulated pulse
Publisher: IEEE
Date: 05-2007
Self-similar evolution of self-written waveguides
Publisher: Optica Publishing Group
Date: 15-02-1998
DOI: 10.1364/OL.23.000268
Abstract: Numerical simulations show that channel waveguides can be self-written in photosensitive materials. As the waveguide evolves, its shape remains approximately constant, even though its depth and width change. We find an exact solution that describes this evolution, which we show to be self-similar. A wide variety of single-peaked beams form waveguides that converge to this solution.
Add-drop multiplexing by grating-induced dispersion in multimode interference device
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 09-2001
DOI: 10.1109/68.942663
Two-dimensional Green’s function and local density of states in photonic crystals consisting of a finite number of cylinders of infinite length
Publisher: American Physical Society (APS)
Date: 29-03-2001
Analysis of nonuniform gratings
Publisher: American Physical Society (APS)
Date: 10-1995
Long wavelength anti-resonant guidance in high index inclusion microstructured fibers
Publisher: Optica Publishing Group
Date: 2004
Abstract: Microstructured optical fibers consisting of a low refractive index core surrounded by high index inclusions guide by anti-resonant reflection. Previous experiments considered only wavelengths that are short compared to microstructure dimensions. We experimentally investigate a microstructured fiber with high index inclusions and demonstrate antiresonant guidance at long wavelengths. We also numerically simulate these structures, including coupling loss, propagation loss, and structural disorder, and compare with the experimental results.
Editorial
Publisher: Optica Publishing Group
Date: 2007
DOI: 10.1364/OE.15.000001
Abstract: This is the first issue of Volume 15 of Optics Express, the web-based journal with color figures and animations at no extra cost, and with free downloads.
Figure of merit for planar plasmonic waveguides with a Kerr nonlinearity
Publisher: OSA
Date: 2014
Characterization and optimization of photonic crystal fibers for enhanced soliton self-frequency shift
Publisher: The Optical Society
Date: 26-08-2010
Axial approximation in the calculation of the valence bands in semiconductor superlattices
Publisher: American Physical Society (APS)
Date: 15-10-1987
The plasmonic folded directional coupler
Publisher: Elsevier BV
Date: 10-2011
Multipole method for microstructured optical fibers. I. Formulation
Publisher: Optica Publishing Group
Date: 10-2002
Slow gap soliton propagation excited by microchip Q-switched pulses
Publisher: IEEE
Date: 2005
Modelling of photonic crystal fiber based on layered inclusions
Publisher: Optica Publishing Group
Date: 04-09-2009
Novel hetero-structures formed by refractive index variations in chalcogenide-based photonic crystal slabs
Publisher: IEEE
Date: 10-2006
Modes and their transitions in microstructured optical fibres
Publisher: IEEE
Date: 2003
Broadband slow-light enhancement of nonlinear effects with plasmonic structures
Publisher: IEEE
Date: 07-2017
Stimulated Brillouin scattering in metamaterials
Publisher: The Optical Society
Date: 30-09-2016
The nonlinear wavenumber in supercontinuum generation
Publisher: IEEE
Date: 07-2006
Bragg grating-based optical switching in a bismuth-oxide fiber with strong χ^(3)-nonlinearity
Publisher: The Optical Society
Date: 15-03-2011
DOI: 10.1364/OE.19.005868
Slow light in nonlinear fibre Bragg gratings
Publisher: IEEE
Date: 07-2006
Microstructured optical fiber phase diagrams and operating regimes: toward deterministic MOF design
Publisher: SPIE
Date: 09-07-2004
DOI: 10.1117/12.520867
Nonlinear switching in photosensitive rocking filters
Publisher: Elsevier BV
Date: 07-1998
Manipulation of spontaneous emission in a tapered photonic crystal fibre
Publisher: Optica Publishing Group
Date: 11-12-2006
DOI: 10.1364/OE.14.012439
Abstract: We characterize the spontaneous emission of dye that is introduced into the central core of a tapered photonic crystal fiber. Since the photonic crystal period in the fibre cladding varies along the taper, the transmission and spontaneous emission spectra over a wide range of relative frequencies can be observed. The spontaneous emission spectra of the fibre transverse to the fiber axis show suppression due to partial band-gaps of the structure, and also enhancement of spontaneous emission near the band edges. We associate these with van Hove features, as well as finite cluster size effects.
Linear pulse propagation with high-order dispersion
Publisher: IOP Publishing
Date: 14-10-2022
Abstract: We present an approximate, but intuitively appealing theoretical study of the linear propagation of optical pulses in media with high-order dispersion. Our analysis, which is fully consistent with numerical simulations, is based on the pulses’ full-width at half maximum and shows that the effect of high-order dispersion differs significantly from that of the well-understood second order dispersion. For high dispersion orders m , the central part of the pulses, where the intensity is highest, evolve in the same way, independent of m , though at different rates, with a weak dependence on the initial pulse shape. We also find that all pulses, irrespective of initial pulse shape, eventually evolve to a sinc function. Our treatment allows us to find expressions for the characteristic dispersion lengths for high dispersion orders.
Theoretical analysis of the self-frequency shift near zero-dispersion points: Soliton spectral tunneling
Publisher: American Physical Society (APS)
Date: 05-10-2007
Electromagnetic localization in one-dimensional stacks with random loss and gain
Publisher: American Physical Society (APS)
Date: 08-1996
Optical nonlinearity resulting from mobile carriers in semiconductor superlattices: Influence of higher minibands
Publisher: AIP Publishing
Date: 15-12-1985
DOI: 10.1063/1.96296
Abstract: We have investigated the temperature dependence of χ(3) optical nonlinearities associated with mobile carriers in a superlattice. Our computer calculations show that at temperatures near 300 K, the population of higher minibands can significantly increase χ(3) over that predicted by considering only the lowest miniband. The magnitude of this increase is strongly correlated with the layer configuration of the superlattice and its associated band structure.
Measurement and simulation of the polarization-dependent Purcell factor in a microwave fishnet metamaterial
Publisher: American Physical Society (APS)
Date: 31-01-2017
Numerically efficient modal decomposition approach to self-writing processes
Publisher: Optica Publishing Group
Date: 09-1997
Stability analysis of nonlinear periodic media
Publisher: American Physical Society (APS)
Date: 06-1992
Pure-quartic solitons and their generalizations—Theory and experiments
Publisher: AIP Publishing
Date: 09-2021
DOI: 10.1063/5.0059525
Abstract: Solitons are wave packets that can propagate without changing shape by balancing nonlinear effects with the effects of dispersion. In photonics, they have underpinned numerous applications, ranging from telecommunications and spectroscopy to ultrashort pulse generation. Although traditionally the dominant dispersion type has been quadratic dispersion, experimental and theoretical research in recent years has shown that high-order, even dispersion enriches the phenomenon and may lead to novel applications. In this Tutorial, which is aimed both at soliton novices and at experienced researchers, we review the exciting developments in this burgeoning area, which includes pure-quartic solitons and their generalizations. We include theory, numerics, and experimental results, covering both fundamental aspects and applications. The theory covers the relevant equations and the intuition to make sense of the results. We discuss experiments in silicon photonic crystal waveguides and in a fiber laser and assess the promises in additional platforms. We hope that this Tutorial will encourage our colleagues to join in the investigation of this exciting and promising field.
Nonlinear propagation in superstructure Bragg gratings
Publisher: Optica Publishing Group
Date: 15-08-1996
DOI: 10.1364/OL.21.001223
Abstract: The existence of solitary waves in superstructure Bragg gratings is experimentally demonstrated, confirming theoretical predictions. We observe nonlinear compression as a result of a combination of the negative dispersion of the grating and the nonlinear phase shift associated with the pulse intensity. We also demonstrate that, in a superstructure Bragg grating, the dispersion is continuously tunable from normal to anomalous, which allows us to manipulate the shape of the transmitted pulse.
Imaging performance of finite uniaxial metamaterials with large anisotropy
Publisher: The Optical Society
Date: 29-05-2014
DOI: 10.1364/OL.39.003286
Soliton self-frequency shift performance in As_2S_3 waveguides
Publisher: Optica Publishing Group
Date: 29-06-2010
DOI: 10.1364/OE.18.014960
Microstructured optical waveguides: So complex yet so simple
Publisher: IEEE
Date: 2003
Figure of merit for Kerr nonlinear plasmonic waveguides (Laser Photonics Rev. 10(4)/2016)
Publisher: Wiley
Date: 07-2016
Soliton mediated quantization transmission in shallow Bragg-gratings
Publisher: SPIE
Date: 30-04-2010
DOI: 10.1117/12.854567
Degenerate band edge resonances in coupled periodic silicon optical waveguides
Publisher: The Optical Society
Date: 02-04-2013
DOI: 10.1364/OE.21.008736
Efficient collinear fourth-harmonic generation by two-channel multistep cascading in a single two-dimensional nonlinear photonic crystal
Publisher: Optica Publishing Group
Date: 15-04-2001
DOI: 10.1364/OL.26.000539
Abstract: We investigate efficient fourth-harmonic generation in a single two-dimensional (2D) quadratically nonlinear photonic crystal. We propose a novel parametric process that starts with phase-matched generation of a pair of symmetric second-harmonic waves, which then interact to produce a fourth-harmonic wave that is collinear to the fundamental. We show that this process is more efficient than conventional fourth-harmonic-generation schemes by a factor that reaches 4 at low intensities and discuss how to design and optimize the nonlinear 2D photonic crystals that are implemented in LiNbO(3) and LiTaO(3) .
Microstructured polymer optical fibre
Publisher: Optica Publishing Group
Date: 24-09-2001
DOI: 10.1364/OE.9.000319
Abstract: The first microstructured polymer optical fibre is described. Both experimental and theoretical evidence is presented to establish that the fibre is effectively single moded at optical wavelengths. Polymer-based microstructured optical fibres offer key advantages over both conventional polymer optical fibres and glass microstructured fibres. The low-cost manufacturability and the chemical flexibility of the polymers provide great potential for applications in data communication networks and for the development of a range of new polymer-based fibre-optic components.
Electromagnetic Stark ladders in waveguide geometries
Publisher: Optica Publishing Group
Date: 08-1991
DOI: 10.1364/OL.16.001141
Abstract: We argue that the planar optical waveguide is the geometry of choice for observing electromagnetic Stark ladders.
Theory of group delay ripple generated by chirped fiber gratings
Publisher: The Optical Society
Date: 08-04-2002
DOI: 10.1364/OE.10.000332
Abstract: The theory of the group delay ripple generated by apodized chirped fiber gratings is developed using the analogy between noisy gratings and superstructure Bragg gratings. It predicts the fundamental cutoff of the high frequency spatial noise of grating parameters in excellent agreement with the experimental data. We find simple general relationship between the high-frequency ripple in the grating period and the group delay ripple. In particular, we show that the litude of a single-frequency group delay ripple component changes with grating period chirp, C, as 3/ 2 C and is proportional to the grating index modulation, while its phase shift and period changes as 1 C .
Bragg solitons and the nonlinear Schrödinger equation
Publisher: American Physical Society (APS)
Date: 1999
Design of high-Q photonic crystal cavities designed by air-holes infiltration
Publisher: IEEE
Date: 06-2007
Stacked wire media slabs: general theory with application to metamaterial hyperlenses
Publisher: Informa UK Limited
Date: 03-04-2017
Photonic crystal slab hetero-structures formed by refractive index variations in chalcogenide glasses
Publisher: IEEE
Date: 07-2006
Erratum: Pure-quartic solitons
Publisher: Springer Science and Business Media LLC
Date: 09-03-2016
DOI: 10.1038/NCOMMS11048
Abstract: Nature Communications 7: Article number: 10427 (2016) Published: 29 January 2016 Updated: 9 March 2016 The original version of this article contained an error in the spelling of the author C. Martijn de Sterke, which was incorrectly given as de Sterke C. Martijn. This has now been corrected in both the PDF and HTML versions of the article.
Three-dimensional Green’s tensor, local density of states, and spontaneous emission in finite two-dimensional photonic crystals composed of cylinders
Publisher: American Physical Society (APS)
Date: 07-12-2004
Slow Light Generation Using Fibre Bragg Gratings
Publisher: IEEE
Date: 02-2008
Ultimate Performance Of Kerr Nonlinear Plasmonics Waveguides
Publisher: OSA
Date: 2017
Erratum: Optical nonlinearity resulting from mobile carriers in semiconductor superlattices: Influence of higher minibands [Appl. Phys. Lett. 4 7, 1260 (1985)]
Publisher: AIP Publishing
Date: 17-02-1986
DOI: 10.1063/1.97034
Experimental observation of evanescent modes at the interface to slow-light photonic crystal waveguides
Publisher: The Optical Society
Date: 25-03-2011
DOI: 10.1364/OL.36.001170
Grating induced spectral enhancement via four-wave mixing
Publisher: IEEE
Date: 07-2006
Gap soliton propagation in optical fiber gratings
Publisher: Optica Publishing Group
Date: 15-08-1995
DOI: 10.1364/OL.20.001674
Theory of grating superstructures
Publisher: American Physical Society (APS)
Date: 03-1997
Radiation dynamics in tapered photonic crystal fibres
Publisher: IEEE
Date: 2005
Generalized dispersion Kerr solitons
Publisher: American Physical Society (APS)
Date: 17-04-2020
Mode field distributions in solid core photonic bandgap fibers
Publisher: Elsevier BV
Date: 07-2006
Coupled-mode equations for quadratically nonlinear deep gratings
Publisher: American Physical Society (APS)
Date: 12-1998
Tunable spectral enhancement in supercontinuum with a long-period fiber grating
Publisher: IEEE
Date: 05-2007
High-Q Defect-Free 2D Photonic Crystal Cavity from Random Localised Disorder
Publisher: MDPI AG
Date: 16-07-2014
DOI: 10.3390/CRYST4030342
Optimization of nonlinear enhancement through linear dispersion engineering
Publisher: Optica Publishing Group
Date: 10-01-2023
DOI: 10.1364/JOSAB.475550
Abstract: We consider nonlinear pulse propagation in media with a dispersion relation exhibiting J periodically spaced identical maxima in a co-moving frame. The nonlinear interactions lead to J pulses centered at each of these frequencies. These pulses propagate at the same group velocity and interfere, leading to a highly non-uniform signal in time. This results in the enhancement of effective nonlinear effects, as we recently demonstrated experimentally [ Nat. Phys. 18 , 59 ( 2022 ) NPAHAX 1745-2473 10.1038/s41567-021-01400-2 ]. Here we present a detailed theoretical and numerical study of this nonlinear enhancement. We show that the litudes of the frequency components approximately follow a simple relation, which allows us to derive that the nonlinear enhancement factor increases as 0.687 J . Hence, enhancements of order 10 can be achieved with 15 frequency components.
Solitons in media with mixed, high-order dispersion and cubic nonlinearity
Publisher: IOP Publishing
Date: 23-08-2022
Abstract: Although most soliton research has traditionally considered dominant quadratic dispersion, the recent discovery of pure-quartic solitons has inspired analysis of soliton solutions with large higher orders of dispersion. Here we present analytic expressions for families of bright soliton solutions at arbitrary dispersion orders and practical methods to obtain the associated dispersion relations. These results provide a framework for considering higher order dispersion solitons and show the potential for further investigation of solitons in higher order dispersion systems.
All-optical self-switching in optimized phase-shifted fiber Bragg grating
Publisher: Optica Publishing Group
Date: 16-03-2009
DOI: 10.1364/OE.17.005083
Abstract: We experimentally demonstrate all-optical self-switching based on sub nanosecond pulse propagation through an optimized fiber Bragg grating with a pi phase-jump. The jump acts as a cavity leading to an intensity enhancement by factor 19. At pulse peak powers of 1.5 kW we observe 4.2 dB nonlinear change in transmission. Experimental results are consistent with numerical simulations.
Soliton dynamics in nonuniform fiber Bragg gratings
Publisher: Optica Publishing Group
Date: 2001
Dynamic Localization in Curved AlGaAs Waveguide Arrays
Publisher: IEEE
Date: 10-2007
Systematic analysis of wavelength conversion in a fiber optical parametric device with a single, tunable pump
Publisher: Optica Publishing Group
Date: 14-06-2004
Abstract: We present an experimental study of a systematic design procedure for achieving high bandwidth wavelength conversion with low ripple in a fiber parametric device with a single tunable pump.We find good agreement with established theory. Fourth order dispersion and fluctuations in the zero-dispersion wavelength have little effect on final conversion bandwidth. Strategies for ripple reduction and pump filtering in a practical device are proposed.
2.04 μm light generation from a Ti:Sapphire laser using a Photonic Crystal Fiber with low OH loss
Publisher: IEEE
Date: 08-2011
Wavelength-encoding/temporal-spreading optical code division multiple-access system with in-fiber chirped moiré gratings
Publisher: Optica Publishing Group
Date: 20-07-1999
DOI: 10.1364/AO.38.004500
Abstract: We propose an optical code ision multiple-access (OCDMA) system that uses in-fiber chirped moiré gratings (CMG's) for encoding and decoding of broadband pulses. In reflection the wavelength-selective and dispersive nature of CMG's can be used to implement wavelength-encoding/temporal-spreading OCDMA. We give ex les of codes designed around the constraints imposed by the encoding devices and present numerical simulations that demonstrate the proposed concept.
Exact dynamic localization in curved AlGaAs optical waveguide arrays
Publisher: Optica Publishing Group
Date: 19-03-2007
DOI: 10.1364/OE.15.003212
Abstract: We present experimental observations of exact dynamic localization of an optical beam in a periodically curved AlGaAs waveguide array. The dynamic localization of the beam is "exact" in that it is observed even when the photonic band of the array is not well described in the nearest-neighbor tight-binding approximation. We present the spatial evolution of the beam around the two-period plane in the structure, explicitly demonstrating the delocalization and subsequent relocalization of the beam. We also emonstrate the strong wavelength dependence of the beam relocalization for a four period structure.
Coupled-mode equations for deep nonlinear gratings
Publisher: Elsevier BV
Date: 09-1994
The bright prospects of optical solitons after 50 years
Publisher: Springer Science and Business Media LLC
Date: 31-10-2023
Slow Light Propagation in Nonlinear Bragg Gratings
Publisher: IEEE
Date: 09-2006
Phase matching in hyperbolic wire media for nonlinear frequency conversion
Publisher: The Optical Society
Date: 22-12-2015
DOI: 10.1364/OE.23.033733
Observation of an optical Wannier-Stark ladder
Publisher: American Physical Society (APS)
Date: 02-1998
Reduced cladding mode losses in tilted gratings that are rotationally symmetric
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 2000
DOI: 10.1109/50.908824
Analysis of self-written waveguide experiments
Publisher: Optica Publishing Group
Date: 10-1999
Narrowband supercontinuum control using phase shaping
Publisher: Optica Publishing Group
Date: 2006
DOI: 10.1364/OE.14.013142
Abstract: We study theoretically, numerically and experimentally the effect of self-phase modulation of ultrashort pulses with spectrally narrow phase features. We show that spectral enhancement and depletion is caused by changing the relative phase between the initial field and the nonlinearly generated components. Our theoretical results explain observations of supercontinuum enhancement by fiber Bragg gratings, and predict similar enhancements for spectrally shaped pulses in uniform fiber. As proof of principle, we demonstrate this effect in the laboratory using a femtosecond pulse shaper.
Nonpolarizing beam splitter design
Publisher: Optica Publishing Group
Date: 15-02-1983
DOI: 10.1364/AO.22.000595
Abstract: A three-step design procedure is developed for dielectric stacks which are required to be nonpolarizing for a given wavelength lambdar and angle of incidence theta 0,r, at which the reflectance Rr is prescribed. The method leads to solutions in which only three layer materials occur and can be applied for a wide range of values of theta0,r and Rr. The media can be chosen from the available coating materials. Furthermore, the procedure offers the possibility of optimizing with respect to the behavior of the reflectance in the neighborhood of lambdar and theta0,r. An ex le is elaborated, and its results are compared with an actually produced coating.
Simulations of gap-soliton generation
Publisher: American Physical Society (APS)
Date: 28-01-1008
Approximate method for gap soliton propagation in nonuniform Bragg gratings
Publisher: American Physical Society (APS)
Date: 12-1998
Fabrication of sampled Bragg gratings in highly nonlinear integrated chalcogenide (As<inf>2</inf>S<inf>3</inf>) waveguides
Publisher: IEEE
Date: 07-2006
Distributed feedback pulse generator based on nonlinear fibre grating
Publisher: Institution of Engineering and Technology (IET)
Date: 1996
DOI: 10.1049/EL:19961581
Comment on ‘‘Slow Bragg solitons in nonlinear periodic structures’’
Publisher: American Physical Society (APS)
Date: 14-08-1989
Fundamental limit for two-dimensional passive devices
Publisher: Optica Publishing Group
Date: 10-03-2009
DOI: 10.1364/OL.34.000779
Abstract: There is an upper limit to the number of electromagnetic communication channels in two-dimensional linear passive components that depends only on the geometrical dimensions but is independent of the permittivity function, the actual external shape, or the internal design. The limit applies to both weakly and strongly scattering waves. When the permittivity contrast is low, a tighter limit exists that includes only multiple scattering waves. A detailed analysis helps compare these two limits and leads to insights that apply to devices, such as photonic crystals and microresonators, as well as lossless metamaterials, superlenses, and cloaking devices. As an ex le, we establish a rigorous scaling relation for the upper bound of the number of demultiplexing channels in superprisms.
Propagation through nonuniform grating structures
Publisher: Optica Publishing Group
Date: 04-1994
Even-order dispersion solitons: A pedagogical note
Publisher: Elsevier BV
Date: 08-2023
Modulational instability and tunable multiple soliton generation in apodized fiber gratings
Publisher: Elsevier BV
Date: 04-1998
Vector treatment of second-harmonic generation produced by tightly focused vignetted Gaussian beams
Publisher: Optica Publishing Group
Date: 12-2004
A menagerie of Bloch oscillations
Publisher: IEEE
Date: 2005
Design of ultrahigh-Q photoinduced cavities in defect-free photonic crystal slabs
Publisher: The Optical Society
Date: 23-09-2010
DOI: 10.1364/OE.18.021397
Stimulated Brillouin scattering in layered media: nanoscale enhancement of silicon
Publisher: The Optical Society
Date: 12-03-2019
DOI: 10.1364/OL.44.001407
Performance of field-enhanced optical switching in fiber Bragg gratings
Publisher: Optica Publishing Group
Date: 07-06-2010
Bragg solitons in the nonlinear Schrödinger limit: experiment and theory
Publisher: Optica Publishing Group
Date: 04-1999
Dispersive wave blue-shift in supercontinuum generation
Publisher: Optica Publishing Group
Date: 11-12-2006
DOI: 10.1364/OE.14.011997
Abstract: We numerically study dispersive wave emission during femtosecond-pumped supercontinuum generation in photonic crystal fibres. We show that dispersive waves are primarily generated over a short region of high temporal compression. Despite the apparent complexity of the pump pulse in this region, we show that the dynamics of dispersive wave generation are dominated by a single fundamental soliton. However, any straightforward application of the theory that is thought to describe the blue emission, considerably underestimates the frequency shift. We show that in fact the red-shift of the soliton, caused by spectral recoil from the growing dispersive wave, causes an additional blue-shift of the resonant frequency which is in good agreement with full simulations.
Two-dimensional plasmonic waveguides for nanolasing and four-wave mixing
Publisher: IOP Publishing
Date: 10-2019
Abstract: Plasmonic waveguides are an essential element of nanoscale coherent sources, including nanolasers and four-wave mixing (FWM) devices. Here we report how the design of the plasmonic waveguide needs to be guided by the ultimate application. This contrasts with traditional approaches in which the waveguide is considered in isolation. We find that hybrid plasmonic waveguides, with a nonlinear material sandwiched between the metal substrate and a high-index layer, are best suited for FWM applications, whereas metallic wedges are preferred in nanolasers. We also find that in plasmonic nanolasers high-index buffer layers perform better than more traditional low-index buffers.
Corrections to Efficient Large Bandwidth Frequency Conversion In High-na Step-index Optical Fibers
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 08-1998
Conditions for Dynamic Localization in Generalized ac Electric Fields
Publisher: American Physical Society (APS)
Date: 15-01-2002
Growth dynamics of phase gratings in optical fibers
Publisher: Elsevier BV
Date: 06-1991
Double pass technique for fabricating compact optical fibre rocking filters
Publisher: Institution of Engineering and Technology (IET)
Date: 22-06-1995
DOI: 10.1049/EL:19950705
Symmetry analysis of self-written waveguides in bulk photosensitive media
Publisher: American Physical Society (APS)
Date: 28-01-2004
Differential losses in Bragg fibers
Publisher: AIP Publishing
Date: 15-07-1994
DOI: 10.1063/1.357811
Abstract: Most dielectric waveguides depend for guidance on total internal reflection within a region of elevated refractive index. A little-explored alternative to this is Bragg reflection. Here we consider a ‘‘Bragg’’ optical fiber in which a cylindrical Bragg grating is used to inhibit radial power flow. We find that such Bragg fibers can be guaranteed to be effectively single-moded, with no polarization degeneracy the electric field in this fundamental mode is purely azimuthal (transverse electric polarized).
Elastic modelling of electrostriction in dielectric composite materials
Publisher: OSA
Date: 2016
Electrostriction enhancement in metamaterials
Publisher: American Physical Society (APS)
Date: 04-06-2015
Performance comparison of kerr nonlinear plasmonic waveguide configurations
Publisher: OSA
Date: 2016
Late rectal and urinary toxicity from conformal, dose‐escalated radiation therapy for prostate cancer: A prospective study of 402 patients
Publisher: Wiley
Date: 22-10-2007
DOI: 10.1111/J.1440-1673.2007.01896.X
Abstract: This study investigates the rate of late rectal and urinary toxicity from three-dimensional conformal radiation therapy (3DCRT) for localized prostate cancer. The influence of neoadjuvant androgen deprivation (AD) on toxicity rates was also examined. A total of 402 men at Liverpool and Westmead hospitals received radical 3DCRT for localized prostate cancer between 1999 and 2003. Patients received either 70 Gy or 74 Gy, according to their prognostic risk grouping and or date of commencing radiation therapy (RT). Late rectal and urinary toxicity data were collected prospectively using Radiation Therapy Oncology Group/European Organisation for Research and Treatment of Cancer criteria. The median follow up of this cohort was 43.5 months. At 36 months, the cumulative incidence of >or=grade 2 rectal and urinary toxicities was 6.7 and 17.5%, respectively. Peak prevalence of late urinary toxicity occurred at 36 months (9.5%), although late rectal toxicity was highest at 12 months (2.9%) from completion of 3DCRT. The use of AD did not cause additional late toxicities. Patients receiving 74 Gy did not experience significantly worse toxicities than the group receiving 70 Gy.
Low Ambient Temperature and Intracerebral Hemorrhage: The INTERACT2 Study
Publisher: Public Library of Science (PLoS)
Date: 09-02-2016
Density of states functions for photonic crystals
Publisher: American Physical Society (APS)
Date: 29-01-2004
Interaction of Bragg solitons in fiber gratings
Publisher: Optica Publishing Group
Date: 1999
Reconfigurable, Defect-Free, Ultrahigh-Q Photonic Crystal Microcavities for Sensing
Publisher: MDPI AG
Date: 08-03-2013
DOI: 10.3390/S130303262
New avenues for phase matching in nonlinear hyperbolic metamaterials
Publisher: Springer Science and Business Media LLC
Date: 11-03-2015
DOI: 10.1038/SREP08983
Abstract: Nonlinear optical processes, which are of paramount importance in science and technology, involve the generation of new frequencies. This requires phase matching to avoid that light generated at different positions interferes destructively. Of the two original approaches to achieve this, one relies on birefringence in optical crystals and is therefore limited by the dispersion of naturally occurring materials, whereas the other, quasi-phase-matching, requires direct modulation of material properties, which is not universally possible. To overcome these limitations, we propose to exploit the unique dispersion afforded by hyperbolic metamaterials, where the refractive index can be arbitrarily large. We systematically analyse the ensuing opportunities and demonstrate that hyperbolic phase matching can be achieved with a wide range of material parameters, offering access to the use of nonlinear media for which phase matching cannot be achieved by other means. With the rapid development in the fabrication of hyperbolic metamaterials, our approach is destined to bring significant advantages over conventional techniques for the phase matching of a variety of nonlinear processes.
<title>Microstructured polymer optical fibers: progress and promise</title>
Publisher: SPIE
Date: 27-03-2002
DOI: 10.1117/12.463819
N-fold symmetric gratings as gain-flattening filters
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 03-2005
Sampled Bragg gratings in chalcogenide (As2S3) rib-waveguides
Publisher: Optica Publishing Group
Date: 2006
DOI: 10.1364/OE.14.009451
Abstract: We have written a s led Bragg grating into a highly photosensitive chalcogenide (As(2)S(3)) rib-waveguide using a scanning Sagnac interferometer. The grating exhibits evenly spaced rejection peaks over a 40 nm bandwidth. We estimate the induced refractive index change of the waveguide to be over 0.03 by matching the measured spectrum to numerical solutions of the coupled mode equations while accounting for an induced chirp. The s led Bragg grating presented is comparable in strength and bandwidth to the best s led Bragg gratings obtained to date in silica optical fibre.
Understanding the contribution of mode area and slow light to the effective Kerr nonlinearity of waveguides
Publisher: The Optical Society
Date: 26-07-2013
DOI: 10.1364/OE.21.018558
Spontaneous emission and photon dynamics in dielectric microcavities
Publisher: American Physical Society (APS)
Date: 05-10-2006
Dynamic localization and quasi-Bloch oscillations in general periodic ac-dc electric fields
Publisher: American Physical Society (APS)
Date: 17-09-2004
Deep Gratings with a χ(2)Nonlinearity: Analysis and Solutions
Publisher: Elsevier BV
Date: 04-1999
Experimental evidence of Förster energy transfer enhancement in the near field through engineered metamaterial surface waves
Publisher: Springer Science and Business Media LLC
Date: 25-08-2023
DOI: 10.1038/S42005-023-01347-1
Abstract: Plasmonics has been demonstrated to provide fine tuning of the emission properties of single quantum sources (brightness, polarization, directivity, spectrum, lifetime…). However, significantly less is known about the role of surface plasmons in mediating subwavelength Förster resonant energy transfer (FRET) when a second emitter is introduced. Here, we report microwave experiments showing that excitation of surface waves on a dedicated metasurface can strongly mediate FRET in the near-field regime. This work paves the way for metasurfaces engineered to control dipole-dipole energy transfer with applications in lighting sources, photovoltaics, quantum information processing and biophysics.
Catching light in its own trap
Publisher: Informa UK Limited
Date: 02-2001
Modal cutoff in microstructured optical fibers
Publisher: Optica Publishing Group
Date: 10-2002
DOI: 10.1364/OL.27.001684
Abstract: We analyze the nature of modal cutoff in microstructured optical fibers of finite cross section. In doing so, we reconcile the striking endlessly single-mode behavior with the fact that in such fibers all propagation constants are complex. We show that the second mode undergoes a strong change of behavior that is reflected in the losses, effective area, and multipolar structure. We establish the parameter subspace in which the fibers are single mode and an accurate value for the limit of the endlessly single-mode regime.
Coherent perfect absorption and reflection in slow-light waveguides
Publisher: The Optical Society
Date: 20-11-2013
DOI: 10.1364/OL.38.004970
Differential multipole method for microstructured optical fibers
Publisher: The Optical Society
Date: 11-2004
Highly-efficient, octave spanning soliton self-frequency shift using a specialized photonic crystal fiber with low OH loss
Publisher: The Optical Society
Date: 25-08-2011
DOI: 10.1364/OE.19.017766
Oscillations of the soliton parameters in nonlinear interference phenomena
Publisher: Elsevier BV
Date: 03-2008
Characterization of photoinduced birefringence change in optical fiber rocking filters
Publisher: AIP Publishing
Date: 12-02-1996
DOI: 10.1063/1.116224
Abstract: We investigate the effects of UV exposure on the growth of optical fiber rocking filters written in hydrogen-loaded germanosilicate elliptical core fibers. We find that with increasing exposure, the rocking angle (induced birefringence) increases rapidly then begins to decrease, eventually erasing completely. With further exposure, the rocking angle is seen to increase again, reaching values of 3.5°. This corresponds to a photoinduced birefringence almost four times larger than previously recorded in optical fiber rocking filters. Furthermore, we show that at high UV fluences, the direction of rotation of the birefringent axes is opposite to that at low fluences.
Wave propagation through nonuniform gratings with slowly varying parameters
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 1999
DOI: 10.1109/50.803037
Nonlinear pulse propagation in twin-core-fiber rocking filters
Publisher: American Physical Society (APS)
Date: 10-1995
Aperiodic 1-dimensional structures for quasi-phase matching
Publisher: Optica Publishing Group
Date: 2004
Abstract: We describe a method for designing 1-dimensional aperiodic poled grating structures of finite length that quasi-phase match multiple Chi((2)) processes. The poling functions for such gratings are best aligned, in terms of the dot product in Fourier space, with a design target. No restrictions are placed on the quasi-phase matching wave numbers. A grating designed for third harmonic generation is simulated.
DNA methylation and body mass index from birth to adolescence: meta-analyses of epigenome-wide association studies
Publisher: Springer Science and Business Media LLC
Date: 25-11-2020
DOI: 10.1186/S13073-020-00810-W
Abstract: DNA methylation has been shown to be associated with adiposity in adulthood. However, whether similar DNA methylation patterns are associated with childhood and adolescent body mass index (BMI) is largely unknown. More insight into this relationship at younger ages may have implications for future prevention of obesity and its related traits. We examined whether DNA methylation in cord blood and whole blood in childhood and adolescence was associated with BMI in the age range from 2 to 18 years using both cross-sectional and longitudinal models. We performed meta-analyses of epigenome-wide association studies including up to 4133 children from 23 studies. We examined the overlap of findings reported in previous studies in children and adults with those in our analyses and calculated enrichment. DNA methylation at three CpGs (cg05937453, cg25212453, and cg10040131), each in a different age range, was associated with BMI at Bonferroni significance, P 1.06 × 10 −7 , with a 0.96 standard deviation score (SDS) (standard error (SE) 0.17), 0.32 SDS (SE 0.06), and 0.32 BMI SDS (SE 0.06) higher BMI per 10% increase in methylation, respectively. DNA methylation at nine additional CpGs in the cross-sectional childhood model was associated with BMI at false discovery rate significance. The strength of the associations of DNA methylation at the 187 CpGs previously identified to be associated with adult BMI, increased with advancing age across childhood and adolescence in our analyses. In addition, correlation coefficients between effect estimates for those CpGs in adults and in children and adolescents also increased. Among the top findings for each age range, we observed increasing enrichment for the CpGs that were previously identified in adults (birth P enrichment = 1 childhood P enrichment = 2.00 × 10 −4 adolescence P enrichment = 2.10 × 10 −7 ). There were only minimal associations of DNA methylation with childhood and adolescent BMI. With the advancing age of the participants across childhood and adolescence, we observed increasing overlap with altered DNA methylation loci reported in association with adult BMI. These findings may be compatible with the hypothesis that DNA methylation differences are mostly a consequence rather than a cause of obesity.
Editorial: 10^th Anniversary
Publisher: Optica Publishing Group
Date: 09-07-2007
DOI: 10.1364/OE.15.008678
Abstract: July 7 is the tenth anniversary of Optics Express. It started in 1997 under the Editorship, and general ch ionship, of J. H. Eberly and 9 Associate Editors, 8 of whom are from the USA. For comparison: at present there are 41 Associate Editors, 20 of whom are from the USA (more about them later). Around the time that Michael Duncan took over as Editor in 2002, submissions really took off, quadrupling between 2002 and 2004. This was in part because of the large number of papers in Microstructured Optical Fibers, for which, thanks to its rapid time to publication, Optics Express became the journal of choice. Optics Express has now evolved to be the journal of choice of the wider optics community: witness the recently released 2006 impact factor of 4.009, the highest of all optics journals.
Switching and dynamic wavelength conversion in a fiber grating cavity
Publisher: The Optical Society
Date: 16-12-2011
Rigorous derivation of coupled mode equations for short, high-intensity grating-coupled, co-propagating pulses
Publisher: Informa UK Limited
Date: 07-2002
Parametric amplification of short pulses in optical fiber bragg gratings
Publisher: No publisher found
Date: 1996
All-optical switching in nonlinear long-period gratings in As 2Se3 chalcogenide fiber
Publisher: IEEE
Date: 07-2008
COVID-19: Factors Associated with the Psychological Distress, Fear and Resilient Coping Strategies among Community Members in Saudi Arabia
Publisher: MDPI AG
Date: 20-04-2023
DOI: 10.3390/HEALTHCARE11081184
Abstract: (1) Background: COVID-19 caused the worst international public health crisis, accompanied by major global economic downturns and mass-scale job losses, which impacted the psychosocial wellbeing of the worldwide population, including Saudi Arabia. Evidence of the high-risk groups impacted by the pandemic has been non-existent in Saudi Arabia. Therefore, this study examined factors associated with psychosocial distress, fear of COVID-19 and coping strategies among the general population in Saudi Arabia. (2) Methods: A cross-sectional study was conducted in healthcare and community settings in the Saudi Arabia using an anonymous online questionnaire. The Kessler Psychological Distress Scale (K-10), Fear of COVID-19 Scale (FCV-19S) and Brief Resilient Coping Scale (BRCS) were used to assess psychological distress, fear and coping strategies, respectively. Multivariate logistic regressions were used, and an Adjusted Odds Ratio (AOR) with 95% Confidence Intervals (CIs) was reported. (3) Results: Among 803 participants, 70% (n = 556) were females, and the median age was 27 years 35% (n = 278) were frontline or essential service workers and 24% (n = 195) reported comorbid conditions including mental health illness. Of the respondents, 175 (21.8%) and 207 (25.8%) reported high and very high psychological distress, respectively. Factors associated with moderate to high levels of psychological distress were: youth, females, non-Saudi nationals, those experiencing a change in employment or a negative financial impact, having comorbidities, and current smoking. A high level of fear was reported by 89 participants (11.1%), and this was associated with being ex-smokers (3.72, 1.14–12.14, 0.029) and changes in employment (3.42, 1.91–6.11, 0.000). A high resilience was reported by 115 participants (14.3%), and 333 participants (41.5%) had medium resilience. Financial impact and contact with known/suspected cases (1.63, 1.12–2.38, 0.011) were associated with low, medium, to high resilient coping. (4) Conclusions: People in Saudi Arabia were at a higher risk of psychosocial distress along with medium-high resilience during the COVID-19 pandemic, warranting urgent attention from healthcare providers and policymakers to provide specific mental health support strategies for their current wellbeing and to avoid a post-pandemic mental health crisis.
Propagation and Scaling of Pure Quartic Solitons
Publisher: OSA
Date: 2017
Nonlinear pulse propagation in Bragg gratings
Publisher: Optica Publishing Group
Date: 11-1997
Slow gap solitons in an optical fibre Bragg grating
Publisher: IEEE
Date: 10-2006
Metamaterials for opto-acoustic interactions
Publisher: Author(s)
Date: 2017
DOI: 10.1063/1.4998027
Shortcuts to adiabaticity in waveguide couplers–theory and implementation
Publisher: Informa UK Limited
Date: 2021
Simple model for pulse formation in lasers with a frequency-shifting element and nonlinearity
Publisher: Elsevier BV
Date: 06-1995
Tunable enhancement of a soliton spectrum using an acoustic long-period grating
Publisher: Optica Publishing Group
Date: 2007
DOI: 10.1364/OE.15.013457
Abstract: We demonstrate a scheme for tunable shaping of a soliton spectrum. Specifically, we show a local enhancement of 6 dB in the pulse spectrum by propagating the pulse through a fiber containing micro-bends generated by a flexural acoustic wave - an acoustic long-period grating (LPG) - followed by nonlinear propagation through uniform fiber. The location of the enhancement peak can be tuned by external control of the acoustic frequency of the LPG. We discuss the potential application of this scheme to tunable supercontinuum sources.
Analysis of the modification of four-wave mixing phase matching by stimulated Brillouin scattering
Publisher: The Optical Society
Date: 02-02-2017
Related Organisations
Technische Universiteit Delft Faculteit Technische Natuurwetenschappen
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