ORCID Profile
0000-0002-4877-7770
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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)
Photonics, Optoelectronics and Optical Communications | Materials Engineering | Optical Physics | Functional Materials | Glass | Composite and Hybrid Materials | Photonics optoelectronics and optical communications | Optics And Opto-Electronic Physics | Nanophotonics | Photonics and Electro-Optical Engineering (excl. Communications) | Materials engineering | Theoretical and Applied Mechanics | Mineralogy and Crystallography | Powder and Particle Technology | Glass | Nanotechnology | Electrical and Electronic Engineering | Inorganic Geochemistry | Nanomaterials | Mineral Processing/Beneficiation | Nonlinear Optics and Spectroscopy | Lasers and Quantum Electronics | Organic Chemical Synthesis | Analytical Spectrometry | Lasers and quantum electronics | Complex Physical Systems | Functional materials | Nonlinear optics and spectroscopy | Biophysics | Applied Mathematics | Environmental Engineering | Nanoscale Characterisation | Astronomical instrumentation | Analytical Chemistry not elsewhere classified | Interdisciplinary Engineering Not Elsewhere Classified | Materials Engineering Not Elsewhere Classified | Nanofabrication, Growth and Self Assembly | Atomic molecular and optical physics | Nanotechnology | Reaction kinetics and dynamics | Optical Properties of Materials | Geochemistry | Synthesis of Materials | Chemical Characterisation of Materials | Nanofabrication growth and self assembly | Numerical Solution of Differential and Integral Equations | Nanoscale characterisation | Manufacturing Processes and Technologies (excl. Textiles) | Resources Engineering and Extractive Metallurgy | Horticultural Crop Growth and Development | Interdisciplinary Engineering | Environmental Biotechnology Diagnostics (incl. Biosensors) | Macromolecular and Materials Chemistry | Sensor (Chemical And Bio-) Technology | Physical Chemistry (Incl. Structural) | Environmental Technologies | Horticultural Production | Structural Chemistry and Spectroscopy | Optical Physics not elsewhere classified | Proteomics and Intermolecular Interactions (excl. Medical Proteomics) | Condensed Matter Characterisation Technique Development
ANZSRC Socio-Economic Objective (SEO)
Expanding Knowledge in the Physical Sciences | Expanding Knowledge in the Chemical Sciences | Expanding Knowledge in Technology | Expanding Knowledge in Engineering | Physical sciences | National Security | Structural Glass and Glass Products | Mining and Extraction of Copper Ores | Industrial Instruments | Combined operations | Expanding Knowledge in the Earth Sciences | Soils not elsewhere classified | Wheat | Emerging Defence Technologies | Network switching equipment | Environmentally Sustainable Mineral Resource Activities not elsewhere classified | Land and water management | Living resources (flora and fauna) | Other environmental aspects | Manufacturing not elsewhere classified | Defence not elsewhere classified | Basic Zinc Products | Medical Instruments | Scientific Instruments | Concentrating Processes of Base Metal Ores (excl. Aluminium and Iron Ores) | Air Force | Mineral Exploration not elsewhere classified | Land and water management | Ceramics, glass and industrial mineral products not elsewhere classified | Manufactured products not elsewhere classified | Communication Networks and Services not elsewhere classified | Primary Mining and Extraction of Mineral Resources not elsewhere classified | Diagnostic Methods | Network Infrastructure Equipment | Expanding Knowledge in the Mathematical Sciences |
Related Links
Publications
A microstructured optical fiber sensor for ion-sensing based on the photoinduced electron transfer effect
Publisher: SPIE
Date: 31-01-2012
DOI: 10.1117/12.915959
Correction to: “Experimental Study on Glass and Polymers: Determining the Optimal Material for Potential Use in Terahertz Technology”
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 2021
Fluoroindate fibres with reduced loss in the mid infrared spectral region: A study of the glass melting and fibre preparation conditions
Publisher: IEEE
Date: 08-2011
Lanthanide upconversion within microstructured optical fibers: improved detection limits for sensing and the demonstration of a new tool for nanocrystal characterization
Publisher: Royal Society of Chemistry (RSC)
Date: 2012
DOI: 10.1039/C2NR32583G
Abstract: We investigate a powerful new sensing platform based on the excitation of upconversion luminescence from NaYF(4):Yb/Er nanocrystals loaded in solution within a suspended-core microstructured optical fiber. We demonstrate a substantial improvement in the detection limit that can be achieved in a suspended-core fiber sensor for solution-based measurements using these nanocrystals as an alternative to more traditional fluorophores, with sensing of concentrations as low as 660 fM demonstrated compared with the 10 pM obtained using quantum dots. This nanocrystal loaded suspended core fiber platform also forms the basis for a novel and robust nanoscale spectrometry device capable of capturing power-dependent spectra over a large dynamic range from 10(3) W cm(-2) to 10(6) W cm(-2) using a laser diode. This serves as a useful tool to study the multiple energy levels of rare earth luminescent nano-materials, allowing the two sharp emission bands to be studied in detail over a large dynamic range of excitation powers. Thus, in addition to demonstrating a highly sensitive dip sensor, we have devised a powerful new approach for characterizing upconversion nanoparticles.
Fabrication of extruded fluoroindate optical fibers
Publisher: The Optical Society
Date: 02-2013
DOI: 10.1364/OME.3.000318
Microstructured optical fibre drawing with active channel pressurisation
Publisher: Cambridge University Press (CUP)
Date: 13-10-2015
DOI: 10.1017/JFM.2015.570
Abstract: The use of channel pressurisation in drawing microstructured optical fibres (MOFs) potentially allows for fine control of the internal structure of the fibre. By applying extra pressure inside the channels it is possible to counteract the effect of surface tension which would otherwise act to close the channels in the fibre as it is drawn. This paper extends the modelling approach of Stokes et al. ( J. Fluid Mech. , vol. 755, 2014, pp. 176–203) to include channel pressurisation. This approach treats the problem as two submodels for the flow, one in the axial direction along the fibre and another in the plane perpendicular to that direction. In the absence of channel pressurisation these models decoupled and were solved independently we show that they become fully coupled when the internal channels are pressurised. The fundamental case of a fibre with an annular cross-section (containing one central channel) will be examined in detail. In doing this we consider both a forward problem to determine the shape of fibre from a known preform and an inverse problem to design a preform such that when drawn it will give a desired fibre geometry. Criteria on the pressure corresponding to fibre explosion and closure of the channel will be given that represent an improvement over similar criteria in the literature. A comparison between our model and a recent experiment is presented to demonstrate the effectiveness of the modelling approach. We make use of some recent work by Buchak et al. ( J. Fluid Mech. , vol. 778, 2015, pp. 5–38) to examine more complicated fibre geometries, where the cross-sectional shape of the internal channels is assumed to be elliptical and multiple channels are present. The ex les presented here demonstrate the versatility of our modelling approach, where the subtleties of the interaction between surface tension and pressurisation can be revealed even for complex patterns of cross-sectional channels.
Extrusion of complex preforms for microstructured optical fibers
Publisher: Optica Publishing Group
Date: 2007
DOI: 10.1364/OE.15.015086
Abstract: We report a significant advance in preform extrusion and die design, which has allowed for the first time the fabrication of complex structured preforms using soft glass and polymer billets. Structural preform distortions are minimized by adjustment of the material flow within the die. The low propagation loss of an extruded complex bismuth glass fiber demonstrates the potential of this advanced extrusion technique for the fabrication of novel soft glass and polymer microstructured fiber designs.
Multimode exposed core fiber specklegram sensor
Publisher: Optica Publishing Group
Date: 04-06-2020
DOI: 10.1364/OL.391812
Abstract: The inception of photonic crystal fibers (PCFs) allowed for unprecedented tailoring of waveguide properties for specialty sensing probes. Exposed core microstructured fibers (ECFs) represent a natural evolution of the PCF design for practical liquid and gas sensing. Until now, to the best of our knowledge, only single-mode or few-modes ECFs have been explored. In this Letter, we demonstrate a highly multimode ECF with a lateral access that extends throughout the whole length of the fiber. The ECF is operated as a fiber specklegram sensor for assessing properties of fluids and interrogated using a simple and low-cost setup. The probe exhibits a refractive index resolution and sensitivity of at least 4.6 × 10 − 4 refractive index units (RIUs) and − 10.97 R I U − 1 , respectively. A maximum temperature resolution up to 0.017°C with a − 0.20 ∘ C − 1 temperature sensitivity over the 23°C–28°C range and a liquid level sensing resolution up to 0.12 mm with − 0.015 m m − 1 sensitivity over the 0.0–50.0 mm bathed the length range in water.
Precise on-Fiber Plasmonic Spectroscopy Using a Gradient-Index Microlens
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 2021
Drawing of micro-structured fibres: circular and non-circular tubes
Publisher: Cambridge University Press (CUP)
Date: 14-08-2014
DOI: 10.1017/JFM.2014.408
Abstract: A general mathematical framework is presented for modelling the pulling of optical glass fibres in a draw tower. The only modelling assumption is that the fibres are slender cross-sections along the fibre can have general shape, including the possibility of multiple holes or channels. A key result is to demonstrate how a so-called reduced time variable $\\def \\xmlpi #1{}\\def \\mathsfbi #1{\\boldsymbol {\\mathsf {#1}}}\\let \\le =\\leqslant \\let \\leq =\\leqslant \\let \\ge =\\geqslant \\let \\geq =\\geqslant \\def \\Pr {\\mathit {Pr}}\\def \\Fr {\\mathit {Fr}}\\def \\Rey {\\mathit {Re}}\\tau $ serves as a natural parameter in describing how an axial-stretching problem interacts with the evolution of a general surface-tension-driven transverse flow via a single important function of $\\tau $ , herein denoted by $H(\\tau )$ , derived from the total rescaled cross-plane perimeter. For any given preform geometry, this function $H(\\tau )$ may be used to calculate the tension required to produce a given fibre geometry, assuming only that the surface tension is known. Of principal practical interest in applications is the ‘inverse problem’ of determining the initial cross-sectional geometry, and experimental draw parameters, necessary to draw a desired final cross-section. Two case studies involving annular tubes are presented in detail: one involves a cross-section comprising an annular concatenation of sintering near-circular discs, the cross-section of the other is a concentric annulus. These two ex les allow us to exemplify and explore two features of the general inverse problem. One is the question of the uniqueness of solutions for a given set of experimental parameters, the other concerns the inherent ill-posedness of the inverse problem. Based on these ex les we also give an experimental validation of the general model and discuss some experimental matters, such as buckling and stability. The ramifications for modelling the drawing of fibres with more complicated geometries, and multiple channels, are discussed.
Extruded high-NA microstructured polymer optical fibre
Publisher: Elsevier BV
Date: 05-2007
Thulium pumped high power supercontinuum in loss-determined optimum lengths of tellurite photonic crystal fiber
Publisher: AIP Publishing
Date: 09-08-2010
DOI: 10.1063/1.3478835
Abstract: We demonstrate the formation of an ultrabroad supercontinuum (SC) generated in short lengths of highly nonlinear tellurite photonic crystal fibers (PCFs) specifically designed for high power picosecond pumping at the thulium wavelength 1930 nm. The fibers exhibit high losses caused by material absorption below ∼500 nm and at long wavelengths & nm by both material and confinement loss. The fibers are endlessly single-mode with a relative hole size of 0.4 and we tune the pitch (Λ) from 3 to 7 μm to achieve zero-dispersion wavelengths both below and above the pump. We show how the SC has a maximum width at an optimum fiber length after which the bandwidth and power decay due to losses. We thus obtain a maximum bandwidth of 4.6 μm for the PCF with the smallest Λ, i.e., 3 μm at an optimum length of only ∼2.8 cm.
Short-range non-bending fully distributed water/humidity sensors
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 05-2019
Lead-germanate glasses and fibers: a practical alternative to tellurite for nonlinear fiber applications
Publisher: The Optical Society
Date: 27-08-2013
DOI: 10.1364/OME.3.001488
Extruded tellurite glass and fibers with low OH content for mid-infrared applications
Publisher: The Optical Society
Date: 16-03-2012
DOI: 10.1364/OME.2.000432
Emerging nonlinear optical fibers: Fabrication and access to new properties
Publisher: IEEE
Date: 2009
Light confinement within nanoholes in nanostructured optical fibers
Publisher: The Optical Society
Date: 30-11-2010
DOI: 10.1364/OE.18.026018
Reusable polymer optical fiber strain sensor with memory capability based on ABS crazing
Publisher: The Optical Society
Date: 11-12-2019
DOI: 10.1364/AO.58.009870
Towards new fiber optic sensors based on the vapor deposited conducting polymer PEDOT: Tos
Publisher: The Optical Society
Date: 04-11-2019
DOI: 10.1364/OME.9.004517
Progress in the fabrication of soft glass microstructured optical fibres with complex and new structures
Publisher: IEEE
Date: 07-2006
Low-loss tellurite fibers with embedded nanodiamonds
Publisher: OSA
Date: 2015
3D-printed extrusion dies: a versatile approach to optical material processing
Publisher: The Optical Society
Date: 02-07-2014
DOI: 10.1364/OME.4.001494
Extruded single ring hollow core optical fibers for Raman sensing
Publisher: SPIE
Date: 02-06-2014
DOI: 10.1117/12.2059407
Optically stimulated luminescence in fluoride phosphate glass optical fibres for radiation dosimetry
Publisher: SPIE
Date: 31-01-2012
DOI: 10.1117/12.916761
Fiber optic approach for detecting corrosion
Publisher: SPIE
Date: 20-04-2016
DOI: 10.1117/12.2219496
Femtosecond laser direct-written microstructured waveguides in passive as well as in novel active glasses
Publisher: IEEE
Date: 07-2012
Upconversion Nanocrystal‐Doped Glass: A New Paradigm for Photonic Materials
Publisher: Wiley
Date: 30-05-2016
2.1 μm waveguide laser fabricated by femtosecond laser direct-writing in Ho3+, Tm3+: ZBLAN glass
Publisher: The Optical Society
Date: 06-03-2012
DOI: 10.1364/OL.37.000996
Simultaneous Measurement of Temperature and Relative Humidity Using Cascaded C-shaped Fabry-Perot interferometers
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 15-02-2022
Fabrication of depressed cladding waveguide Bragg-gratings in rare-earth doped heavy-metal fluoride glass
Publisher: IEEE
Date: 05-2011
Efficient Four-Wave-Mixing at 1.55¿m in a Short-Length Dispersion Shifted Lead Silicate Holey Fibre
Publisher: IEEE
Date: 09-2006
Antibody immobilization within glass microstructured fibers: a route to sensitive and selective biosensors
Publisher: Optica Publishing Group
Date: 24-10-2008
DOI: 10.1364/OE.16.018514
Abstract: Glass microstructured optical fibers have been rendered biologically active for the first time via the immobilization of antibodies within the holes in the fiber cross-section. This has been done by introducing coating layers to the internal surfaces of soft glass fibers. The detection of proteins that bind to these antibodies has been demonstrated experimentally within this system via the use of fluorescence labeling. The approach combines the sensitivity resulting from the long interaction lengths of filled fibers with the selectivity provided by the use of antibodies.
High stability supercontinuum generation in lead silicate SF57 photonic crystal fibers
Publisher: IOP Publishing
Date: 2013
Photoswitchable calcium sensor: ‘On’–‘Off’ sensing in cells or with microstructured optical fibers
Publisher: Elsevier BV
Date: 11-2017
Low loss, low dispersion T-ray transmission in Microwires
Publisher: IEEE
Date: 05-2007
Optically Stimulated Luminescence in Fluoride–Phosphate Glass for Radiation Dosimetry
Publisher: Wiley
Date: 23-11-2010
Towards rewritable multilevel optical data storage in single nanocrystals
Publisher: Optica Publishing Group
Date: 26-04-2018
DOI: 10.1364/OE.26.012266
Fluorescent diamond microparticle doped glass fiber for magnetic field sensing
Publisher: AIP Publishing
Date: 08-2020
DOI: 10.1063/5.0013473
Abstract: Diamond containing the nitrogen-vacancy (NV) center is emerging as a significant sensing platform. However, most NV sensors require microscopes to collect the fluorescence signals and therefore are limited to laboratory settings. By embedding micron-scale diamond particles at an annular interface within the cross section of a silicate glass fiber, we demonstrate a robust fiber material capable of sensing magnetic fields. Luminescence spectroscopy and electron spin resonance characterization reveal that the optical properties of NV centers in the diamond microcrystals are well preserved throughout the fiber drawing process. The hybrid fiber presents a low propagation loss of ∼4.0 dB/m in the NV emission spectral window, permitting remote monitoring of the optically detected magnetic resonance signals. We demonstrate NV-spin magnetic resonance readout through 50 cm of fiber. This study paves a way for the scalable fabrication of fiber-based diamond sensors for field-deployable quantum metrology applications.
Spectroscopy of erbium in La<sup>3+</sup>-doped tellurite glass & fibres
Publisher: IEEE
Date: 07-2008
Record nonlinearity in optical fibre
Publisher: Institution of Engineering and Technology (IET)
Date: 2008
DOI: 10.1049/EL:20083094
Surface Plasmon Scattering in Exposed Core Optical Fiber for Enhanced Resolution Refractive Index Sensing
Publisher: MDPI AG
Date: 29-09-2015
DOI: 10.3390/S151025090
Silica exposed-core microstructured optical fibers
Publisher: The Optical Society
Date: 02-10-2012
DOI: 10.1364/OME.2.001538
New tellurite glasses for erbium fibre lasers
Publisher: IEEE
Date: 07-2008
Resonance‐Induced Dispersion Tuning for Tailoring Nonsolitonic Radiation via Nanofilms in Exposed Core Fibers
Publisher: Wiley
Date: 19-05-2020
Detection of gold nanoparticles with different sizes using absorption and fluorescence based method
Publisher: Elsevier BV
Date: 05-2016
Functionalization of exposed core fibers with multiligand binding molecules for fluorescence based ion sensing
Publisher: SPIE
Date: 02-06-2014
DOI: 10.1117/12.2059481
Drawing tubular fibres: experiments versus mathematical modelling
Publisher: The Optical Society
Date: 15-12-2015
DOI: 10.1364/OME.6.000166
Fabrication and supercontinuum generation in dispersion flattened bismuth microstructured optical fiber
Publisher: The Optical Society
Date: 10-10-2011
DOI: 10.1364/OE.19.021135
PROGRESS IN MICROSTRUCTURED OPTICAL FIBERS
Publisher: Annual Reviews
Date: 08-2006
DOI: 10.1146/ANNUREV.MATSCI.36.111904.135316
Abstract: ▪ Abstract The development of microstructured optical fibers has led to the realization of many optical properties in fiber form that were not previously attainable. This chapter reviews the background to this work and overviews both the fundamentals of and progress in fabricating and modeling these structures. Until relatively recently, most of the work in this field was based on silica glass this chapter provides an update on progress in developing microstructured fibers from other materials such as soft glasses. Some of the key applications of microstructured fibers, including nonlinear fiber–based devices and fibers for high power light delivery, are also reviewed.
Progress in the Fabrication of the Next-Generation Soft Glass Microstructured Optical Fibers
Publisher: AIP
Date: 2008
DOI: 10.1063/1.3002555
Interferometric high temperature sensor using suspended-core optical fibers
Publisher: The Optical Society
Date: 14-04-2016
DOI: 10.1364/OE.24.008967
Temperature sensing up to 1300°C using suspended-core microstructured optical fibers
Publisher: The Optical Society
Date: 12-02-2016
DOI: 10.1364/OE.24.003714
Small core optical waveguides are more nonlinear than expected: experimental confirmation
Publisher: Optica Publishing Group
Date: 12-11-2009
DOI: 10.1364/OL.34.003577
Comparison of surface functionalization processes for optical fibre biosensing applications
Publisher: SPIE
Date: 05-10-2009
DOI: 10.1117/12.835283
A 40% slope efficiency 790nm pumped 1.9m Tμm3+: ZBLAN directly-written waveguide laser
Publisher: IEEE
Date: 05-2011
A Fundamental Study Into the Surface Functionalization of Soft Glass Microstructured Optical Fibers via Silane Coupling Agents
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 03-2009
Plasmonic Fiber Optic Refractometric Sensors: From Conventional Architectures to Recent Design Trends
Publisher: MDPI AG
Date: 23-12-2016
DOI: 10.3390/S17010012
Versatile large-mode-area femtosecond laserwritten Tm:ZBLAN glass chip lasers
Publisher: The Optical Society
Date: 27-11-2012
DOI: 10.1364/OE.20.027503
3D Photonics in the Mid-infrared: Parametric study of ultrafast laser inscribed waveguides for stellar interferometry
Publisher: OSA
Date: 2016
Reduced loss in extruded soft glass microstructured fibre
Publisher: IEEE
Date: 06-2007
Extruded Microstructured Fiber Lasers
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 04-2012
Mid-infrared astrophotonics: Study of ultrafast laser induced index change in compatible materials
Publisher: The Optical Society
Date: 02-02-2017
DOI: 10.1364/OME.7.000698
Surface tension and viscosity measurement of optical glasses using a scanning CO_2 laser
Publisher: The Optical Society
Date: 23-07-2012
DOI: 10.1364/OME.2.001101
Femtosecond laser induced structural changes in fluorozirconate glass
Publisher: The Optical Society
Date: 05-04-2013
DOI: 10.1364/OME.3.000574
Preferential coupling of diamond NV centres in step-index fibres
Publisher: Optica Publishing Group
Date: 28-04-2021
DOI: 10.1364/OE.417825
Abstract: Diamonds containing the negatively charged nitrogen-vacancy centre are a promising system for room-temperature magnetometry. The combination of nano- and micro-diamond particles with optical fibres provides an option for deploying nitrogen-vacancy magnetometers in harsh and challenging environments. Here we numerically explore the coupling efficiency from nitrogen-vacancy centres within a diamond doped at the core/clad interface across a range of commercially available fibre types so as to inform the design process for a diamond in fibre magnetometers. We determine coupling efficiencies from nitrogen-vacancy centres to the guided modes of a step-index fibre and predict the optically detected magnetic resonance (ODMR) generated by a ensemble of four nitrogen-vacancy centres in this hybrid fibre system. Our results show that the coupling efficiency is enhanced with a high refractive index difference between the fibre core and cladding and depends on the radial position of the nitrogen-vacancy centres in the fibre core. Our ODMR simulations show that due to the preferential coupling of the nitrogen-vacancy emission to the fibre guided modes, certain magnetometry features such as ODMR contrast can be enhanced and lead to improved sensitivity in such diamond-fibre systems, relative to conventional diamond only ensemble geometries.
Driving down the detection limit in microstructured fiber-based chemical dip sensors
Publisher: MDPI AG
Date: 04-03-2011
DOI: 10.3390/S110302961
Experimental investigation of dispersion properties of THz porous fibers
Publisher: IEEE
Date: 09-2009
Towards hybrid diamond optical devices
Publisher: IEEE
Date: 06-2011
Miniaturized single-fiber-based needle probe for combined imaging and sensing in deep tissue
Publisher: The Optical Society
Date: 06-04-2018
DOI: 10.1364/OL.43.001682
Highly-efficient fluorescence sensing using microstructured optical fibres; general model and experiment
Publisher: SPIE
Date: 14-04-2008
DOI: 10.1117/12.785997
Fifty percent internal slope efficiency femtosecond direct-written Tm 3+:ZBLAN waveguide laser
Publisher: The Optical Society
Date: 22-04-2011
DOI: 10.1364/OL.36.001587
Sensitive fluorescence detection with microstructured optical fibers
Publisher: SPIE
Date: 13-05-2011
DOI: 10.1117/12.883826
Modal interferometric refractive index sensing in microstructured exposed core fibres
Publisher: The Optical Society
Date: 26-11-2019
DOI: 10.1364/OE.27.036269
Analysis of 3D-printed metal for rapid-prototyped reflective terahertz optics
Publisher: The Optical Society
Date: 22-07-2016
DOI: 10.1364/OE.24.017384
Hollow-Core Optical Fibers Made by Glass Billet Extrusion as Sensors for Raman Spectroscopy
Publisher: OSA
Date: 2016
A low-volume microstructured optical fiber hydrogen peroxide sensor
Publisher: SPIE
Date: 13-05-2011
DOI: 10.1117/12.883829
Towards microstructured optical fibre sensors: surface analysis of silanised lead silicate glass
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3TC31414F
Analysis of glass flow during extrusion of optical fiber preforms
Publisher: The Optical Society
Date: 23-08-2018
DOI: 10.1364/OME.2.000304
Low concentration fluorescence sensing in suspended-core fibers
Publisher: SPIE
Date: 15-05-2011
DOI: 10.1117/12.886080
Quantum noise limited nanoparticle detection with exposed-core fiber
Publisher: The Optical Society
Date: 19-06-2019
DOI: 10.1364/OE.27.018601
Progress in soft glass microstructured fibres
Publisher: IEEE
Date: 2005
Chemical Deposition of Silver for the Fabrication of Surface Plasmon Microstructured Optical Fibre Sensors
Publisher: Springer Science and Business Media LLC
Date: 22-10-2010
Ternary tellurite glasses for the fabrication of nonlinear optical fibres
Publisher: The Optical Society
Date: 10-01-2012
DOI: 10.1364/OME.2.000140
Exposed-core microstructured fibres for real-time fluorescence sensing
Publisher: SPIE
Date: 05-10-2009
DOI: 10.1117/12.834457
Whispering gallery mode excitation using exposed-core fiber
Publisher: Optica Publishing Group
Date: 09-07-2021
DOI: 10.1364/OE.431544
Abstract: Whispering gallery modes (WGMs) in micro-resonators are of interest due to their high Q-factors. Ultra-thin fiber tapers are widely deployed to couple light into micro-resonators but achieving stable and practical coupling for out-of-lab use remains challenging. Here, a new WGM coupling scheme using an exposed-core silica fiber (ECF) is proposed, which overcomes the challenge of using fragile fiber tapers. Microspheres are deposited onto the exposed channel for excitation via the evanescent field of the fiber’s guided modes. The outer jacket of the ECF partially encapsulates the microspheres, protecting them from external physical disturbance. By varying the mode launching conditions in this few-mode ECF, in combination with a Fano resonance effect, we demonstrate a high degree of tunability in the reflection spectrum. Furthermore, we show multi-particle WGM excitation, which could be controlled to occur either simultaneously or separately through controlling the ECF mode launching conditions. This work can bring value towards applications such as optical switches and modulators, multiplexed/distributed biosensing, and multi-point lasing, integrated in a single optical fiber device that avoids fiber post-processing.
Controlled formation of gold nanoparticles with tunable plasmonic properties in tellurite glass
Publisher: Research Square Platform LLC
Date: 05-07-2023
DOI: 10.21203/RS.3.RS-3118468/V1
Abstract: Silicate glasses with metallic nanoparticles (NPs) have been of intense interest in art, science and technology as the plasmonic properties of the metallic NPs equip glass with light modulation capability. The so-called striking technique has enabled precise control of the in-situ formation of metallic NPs in silicate glasses for applications from coloured glasses to photonic devices. Over the past two decades, there has been a large amount of work to adapt the striking technique to form gold or silver NPs in tellurite glasses that exhibit the unique combination of easy fabrication, low phonon energy, wide transmission window and high solubility of luminescent rare earth ions. Nevertheless, the control of the in-situ formation of metal NPs and hence their plasmonic features in tellurite glasses has remained insufficient for photonic applications. Here, we first uncover the challenges of the traditional striking technique to create gold NPs in tellurite glass. Then, we demonstrate precise control of the size and concentration of gold NPs in tellurite glass by developing new approaches to both steps of the striking technique: a controlled gold crucible corrosion technique to incorporate gold ions in tellurite glass and a novel powder reheating technique to subsequently transform the gold ions to gold NPs. Using the Mie theory, the size, size distribution and concentration of the gold NPs formed in tellurite glass were determined from the plasmonic properties of the NPs. This fundamental research provides guidance to designing and manipulating the plasmonic properties in tellurite glass for photonics research and applications.
Luminescent properties of fluoride phosphate glass for radiation dosimetry
Publisher: The Optical Society
Date: 11-06-2013
DOI: 10.1364/OME.3.000960
Exploiting Surface Plasmon Scattering on Optical Fibers
Publisher: SPIE
Date: 09-12-2016
DOI: 10.1117/12.2242259
Tellurite microspheres for nanoparticle sensing and novel light sources
Publisher: The Optical Society
Date: 09-05-2014
DOI: 10.1364/OE.22.011995
Investigation of oversized channels in tubular fibre drawing
Publisher: Optica Publishing Group
Date: 26-02-2021
DOI: 10.1364/OME.419607
Abstract: In a previous study, we compared experiments on drawing of axisymmetric tubular optical fibres to a mathematical model of this process. The model and experiments generally agreed closely. However, for some preforms and operational conditions, the internal channel of the drawn fibre was larger than predicted by the model. We have further investigated this phenomenon of an oversized channel with to determine the mechanism behind the size discrepancy. In particular we have explored the possibility of channel expansion similar to ‘self-pressurisation’ in fibres drawn from preforms that have been first sealed to the atmosphere, as previously described by Voyce et al. [ J. Lightwave Technol. 27 , 871 ( 2009 ) 10.1109/JLT.2007.916489 ] . For this, two pieces from each of two preforms with different inner to outer diameter ratios were drawn to fibre, one open to the atmosphere and the other with a sealed end. In addition, we have sectioned a cooled neck-down region from a previous experiment, for which the fibre had an oversized channel compared to the model prediction, and measured the cross-sectional slices. We here compare this new experimental data with the predictions of the previously derived model for drawing of an unsealed preform and a new model, developed herein, for drawing of a sealed tube. We establish that the observed oversized channels are not consistent with the self-pressurisation model for the sealed tube.
Efficient 2.9 μm fluorozirconate glass waveguide chip laser
Publisher: The Optical Society
Date: 15-07-2013
DOI: 10.1364/OL.38.002588
Temperature-Compensated Interferometric High-Temperature Pressure Sensor Using a Pure Silica Microstructured Optical Fiber
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 2022
Temperature-Compensated Refractive Index Measurement Using a Dual Fabry–Perot Interferometer Based on C-Fiber Cavity
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 15-06-2020
A six-strut suspended core fiber for cylindrical vector mode generation and propagation
Publisher: The Optical Society
Date: 19-11-2018
DOI: 10.1364/OE.26.032037
Midinfrared optical rogue waves in soft glass photonic crystal fiber
Publisher: The Optical Society
Date: 29-08-2011
DOI: 10.1364/OE.19.017973
A Fibre-Optic Platform for Sensing Nitrate Using Conducting Polymers
Publisher: MDPI AG
Date: 28-12-2020
DOI: 10.3390/S21010138
Abstract: Monitoring nitrate ions is essential in agriculture, food industry, health sector and aquatic ecosystem. We show that a conducting polymer, poly(3,4-ethylenedioxythiophene) (PEDOT), can be used for nitrate sensing through a process in which nitrate ion uptake leads to oxidation of PEDOT and change of its optical properties. In this study, a new platform is developed in which a single-mode fibre coated at the tip with PEDOT is used for nitrate sensing. A crucial step towards this goal is introduction of carbonate exposure to chemically reduced PEDOT to a baseline value. The proposed platform exhibits the change in optical behaviour of the PEDOT layer at the tip of the fibre as it undergoes chemical oxidation and reduction (redox). The change in optical properties due to redox switching varies with the intensity of light back reflected by the fibre coated with PEDOT. The proposed platform during oxidation demonstrates linear response for the uptake of nitrate ions in concentrations ranging between 0.2 and 40 parts per million (ppm), with a regression coefficient R2=0.97 and a detection limit of 6.7 ppm. The procedure for redox switching is repeatable as the back reflection light intensity reaches ±1.5% of the initial value after reduction.
Towards zero dispersion highly nonlinear lead silicate glass holey fibres at 1550 nm by structured-element-stacking
Publisher: IEE
Date: 2005
DOI: 10.1049/CP:20050869
Elliptical pore regularisation of the inverse problem for microstructured optical fibre fabrication
Publisher: Cambridge University Press (CUP)
Date: 30-07-2015
DOI: 10.1017/JFM.2015.337
Abstract: A mathematical model is presented describing the deformation, under the combined effects of surface tension and draw tension, of an array of channels in the drawing of a broad class of slender viscous fibres. The process is relevant to the fabrication of microstructured optical fibres, also known as MOFs or holey fibres, where the pattern of channels in the fibre plays a crucial role in guiding light along it. Our model makes use of two asymptotic approximations, that the fibre is slender and that the cross-section of the fibre is a circular disc with well-separated elliptical channels that are not too close to the outer boundary. The latter assumption allows us to make use of a suitably generalised ‘elliptical pore model (EPM)’ introduced previously by one of the authors (Crowdy, J. Fluid Mech. , vol. 501, 2004, pp. 251–277) to quantify the axial variation of the geometry during a steady-state draw. The accuracy of the elliptical pore model as an approximation is tested by comparison with full numerical simulations. Our model provides a fast and accurate reduction of the full free-boundary problem to a coupled system of nonlinear ordinary differential equations. More significantly, it also allows a regularisation of an important ill-posed inverse problem in MOF fabrication: how to find the initial preform geometry and the experimental parameters required to draw MOFs with desired cross-plane geometries.
Cleaving of Extremely Porous Polymer Fibers
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 12-2009
Nanofilm-induced spectral tuning of third harmonic generation
Publisher: The Optical Society
Date: 27-04-2017
DOI: 10.1364/OL.42.001812
Extruded fluoride fiber for 2.3μm laser application
Publisher: IEEE
Date: 08-2011
Lead silicate microstructured optical fibres for electro-optical applications
Publisher: The Optical Society
Date: 12-12-2013
DOI: 10.1364/OE.21.031309
Two-dimensional mapping of surface scatterers on an optical fiber core using selective mode launching
Publisher: AIP Publishing
Date: 02-2021
DOI: 10.1063/5.0036300
Abstract: The tracking of small particles is an important but challenging task for biological applications such as disease diagnostics and medical research. Current methods are limited to the use of bulky instruments such as flow cytometers and microscopes. Here, a novel technique for the detection and measurement of micron-scale optical scatterers using a few-mode exposed-core microstructured optical fiber is proposed. Through selective mode launching combined with optical frequency domain reflectometry, scatterers located on the fiber core surface can be simultaneously mapped with both longitudinal and transverse information. This technique is demonstrated by detecting the two-dimensional positions of several femtosecond-laser-inscribed micron-scale ablations written at different locations on the fiber core surface. Due to the compact nature of the optical fiber and its local sensitivity to scatterers that are in close proximity to it, this technique has the potential for the measurement and detection of micron-scale particles in difficult to reach biological environments for in vivo applications.
Suspended nanowires: Fabrication, design and characterization of fibers with nanoscale cores
Publisher: Optica Publishing Group
Date: 09-02-2009
DOI: 10.1364/OE.17.002646
Abstract: We report a new approach for the fabrication of nanowires: the direct drawing of optical fibers with air suspended nanoscale cores. The fibers were made from lead silicate glass using the extrusion technique for preform and jacket tube fabrication. Fibers with core diameters in the range of 420-720 nm and practical outer diameters of 110-200 microm were produced, the smallest core sizes produced to date within optical fibers without tapering. We explored the impact of the core size on the effective mode area and propagation loss of these suspended nanowires relative to circular nanowires reported to date. As for circular nanowires, the propagation loss of these suspended nanowires is dominated by surface roughness induced scattering.
Terahertz Waveguides and Materials
Publisher: IEEE
Date: 09-2006
High temperature fiber sensor using the interference effect within a suspended core microstructured optical fiber
Publisher: SPIE
Date: 29-04-2016
DOI: 10.1117/12.2227354
Reduction of scattering loss in fluoroindate glass fibers
Publisher: The Optical Society
Date: 12-08-2013
DOI: 10.1364/OME.3.001285
Single photon emission from nanodiamond in tellurite glass
Publisher: IEEE
Date: 08-2011
Hollow Core Inhibited Coupled Antiresonant Terahertz Fiber: A Numerical and Experimental Study
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 05-2021
Dual-polarized highly sensitive plasmonic sensor in the visible to near-IR spectrum
Publisher: The Optical Society
Date: 05-11-2018
DOI: 10.1364/OE.26.030347
Microstructured Optical Fiber-based Biosensors: Reversible and Nanoliter-Scale Measurement of Zinc Ions
Publisher: American Chemical Society (ACS)
Date: 13-05-2016
Abstract: Sensing platforms that allow rapid and efficient detection of metal ions would have applications in disease diagnosis and study, as well as environmental sensing. Here, we report the first microstructured optical fiber-based biosensor for the reversible and nanoliter-scale measurement of metal ions. Specifically, a photoswitchable spiropyran Zn(2+) sensor is incorporated within the microenvironment of a liposome attached to microstructured optical fibers (exposed-core and suspended-core microstructured optical fibers). Both fiber-based platforms retains high selectivity of ion binding associated with a small molecule sensor, while also allowing nanoliter volume s ling and on/off switching. We have demonstrated that multiple measurements can be made on a single s le without the need to change the sensor. The ability of the new sensing platform to sense Zn(2+) in pleural lavage and nasopharynx of mice was compared to that of established ion sensing methodologies such as inductively coupled plasma mass spectrometry (ICP-MS) and a commercially available fluorophore (Fluozin-3), where the optical-fiber-based sensor provides a significant advantage in that it allows the use of nanoliter (nL) s ling when compared to ICP-MS (mL) and FluoZin-3 (μL). This work paves the way to a generic approach for developing surface-based ion sensors using a range of sensor molecules, which can be attached to a surface without the need for its chemical modification and presents an opportunity for the development of new and highly specific ion sensors for real time sensing applications.
Upconversion Nanocrystals Doped Glass: A New Paradigm for Integrated Optical Glass
Publisher: OSA
Date: 2016
Impact of rare earth doping on the luminescence of lanthanum aluminum silicate glasses for radiation sensing
Publisher: Optica Publishing Group
Date: 15-08-2022
DOI: 10.1364/OME.463119
Abstract: Large core soft glass fibers have been demonstrated to be promising candidates as intrinsic fiber sensors for radiation detection and dosimetry applications. Doping with rare earth ions enhanced their radiation sensitivity. SiO 2 -Al 2 O 3 -La 2 O 3 (SAL) glasses offer easy fabrication of large core fibers with high rare earth concentration and higher mechanical strength than soft glasses. This paper evaluates the suitability of the SAL glass type for radiation dosimetry based on optically stimulated luminescence (OSL) via a comprehensive investigation of the spectroscopic and dosimetric properties of undoped and differently rare earth doped bulk SAL glass s les. Due to the low intensity of the rare earth luminescence peaks in the 250–400 nm OSL detection range, the OSL response for all the SAL glasses is not caused by the rare earth ions but by radiation-induced defects that act as intrinsic centers for the recombination of electrons and holes produced by the ionizing radiation, trapped in fabrication induced defect centers, and then released via stimulation with 470 nm light. The rare earth ions interfere with these processes involving intrinsic centers. This dosimetric behavior of highly rare earth doped SAL glasses suggests that enhancement of OSL response requires lower rare earth concentrations and/or longer wavelength OSL detection range.
Diamond in Tellurite Glass: a New Medium for Quantum Information
Publisher: Wiley
Date: 20-04-2011
Nitric oxide sensitive optic fiber sensor based on immobilized ruthenium(II) complex
Publisher: OSA
Date: 2014
Soft glass microstructured optical fibres: Recent progress in fabrication and opportunities for novel optical devices
Publisher: IEEE
Date: 06-2009
Stability of Grating-Based Optical Fiber Sensors at High Temperature
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 15-04-2019
Highly birefringent elliptical core photonic crystal fiber for terahertz application
Publisher: Elsevier BV
Date: 2018
Versatile fs laser-written glass chip lasers
Publisher: SPIE
Date: 06-03-2013
DOI: 10.1117/12.2012519
Emerging Nonlinear Optical Fibers: Revised Fundamentals, Fabrication and Access to Extreme Nonlinearity
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 11-2009
An optical fibre sensor for remotely detecting water traces in organic solvents
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6RA17475B
Abstract: Tetraphenylpyrazine-triphenylamine detects water traces by fluorescence peak wavelength shifting and optical fibres were used for a remote and field-deployable sensing ability.
Ultrafast Laser Inscription in Soft Glasses: A Comparative Study of Athermal and Thermal Processing Regimes for Guided Wave Optics
Publisher: Wiley
Date: 19-11-2012
DOI: 10.1111/IJAG.12005
New frontiers in nano-scale highly nonlinear photonic circuits for System on System (SoS) Integration
Publisher: IEEE
Date: 2009
Fluoride glass microstructured optical fibre with large mode area and mid-infrared transmission
Publisher: IEEE
Date: 07-2008
Taming the Light in Microstructured Optical Fibers for Sensing
Publisher: Wiley
Date: 21-07-2015
DOI: 10.1111/IJAG.12128
Fluorescence-based aluminum ion sensing using a surface-functionalized microstructured optical fiber
Publisher: American Chemical Society (ACS)
Date: 06-04-2011
DOI: 10.1021/LA2002496
Abstract: The first microstructured optical fiber-based sensor platform for aluminum ions using a surface-attached derivative of lumogallion (3), a known fluorescence-based indicator, has been fabricated. These fibers allow for strong evanescent field interactions with the surrounding media because of the small core size while also providing the potential for real-time and distributed measurements. The fluorescence response to aluminum ions was first demonstrated by applying the procedure to glass slides. This was achieved through the covalent attachment of the fluorophore to a polyelectrolyte-coated glass surface and then to the internal holes of a suspended-core microstructured optical fiber to give an effective aluminum sensor. Whereas the sensor platform reported is fabricated for aluminum, the approach is versatile, with applicability to the detection of other ions.
Sensing with suspended-core optical fibers
Publisher: Elsevier BV
Date: 12-2010
Spectroscopic analysis and laser simulations of Yb3+/Ho3+ co-doped lead-germanate glass
Publisher: Optica Publishing Group
Date: 12-10-2020
DOI: 10.1364/OME.404375
Abstract: The potential of a Yb 3+ /Ho 3+ co-doped lead-germanate glass as a laser gain medium around 2 µm is investigated by spectroscopic measurements and rate equation modelling. The glass, based on the molar composition of 56GeO 2 -31PbO-4Ga 2 O 3 -9Na 2 O and co-doped with 1.5 mol% Yb 2 O 3 and 0.4 mol% Ho 2 O 3 , possesses a broad Ho 3+ emission spectrum covering ∼1.8 µm to 2.2 µm for the Ho 3+ : 5 I 7 → 5 I 8 transition, and a long 5 I 7 fluorescence lifetime of (7.74 ± 0.03) ms. We estimate a competitive 2 µm quantum efficiency (76%) compared to other germanate glasses. The intensity parameters are calculated to be Ω 2 = 3.0×10 −20 cm 2 , Ω 4 = 1.2×10 −20 cm 2 and Ω 6 = 2.0×10 −20 cm 2 . The energy transfer analysis from Ho 3+ to OH group represents a low Ho 3+ -OH clustering factor ( γ = 0.15) compared to phosphate and other germanate glasses. Applying these parameters to the laser model predicts 15% laser slope efficiency for cavity losses ≤ 0.5 dB using 976 nm pumping. The results show that this Yb 3+ /Ho 3+ co-doped lead-germanate glass is a promising candidate for efficient lasing around 2 µm.
Lasing from Narrow Bandwidth Light-Emitting One-Dimensional Nanoporous Photonic Crystals
Publisher: American Chemical Society (ACS)
Date: 09-03-2022
Experimental study of chemical durability of fluorozirconate and fluoroindate glasses in deionized water
Publisher: Optica Publishing Group
Date: 22-05-2014
DOI: 10.1364/OME.4.001213
Nanodiamond in tellurite glass Part II: Practical nanodiamond-doped fibers
Publisher: The Optical Society
Date: 09-12-2015
DOI: 10.1364/OME.5.000073
Microwire fibers for low-loss THz transmission
Publisher: SPIE
Date: 27-12-2006
DOI: 10.1117/12.695785
Single-peak fiber Bragg gratings in suspended-core optical fibers
Publisher: Optica Publishing Group
Date: 22-07-2020
DOI: 10.1364/OE.397537
Abstract: Femtosecond laser inscribed fiber Bragg gratings in pure-silica suspended-core optical fibers have previously been demonstrated as a promising platform for high temperature sensing. However, the density of gratings that could be written on a single fiber was limited by undesired reflections associated with higher order modes in these high numerical aperture fibers. This resulted in a complex, broadband reflection spectrum with limited multiplexing capability. In this work we utilize modifications to the fine structure of the suspended core optical fibers to fine tune the relative confinement loss of the optical fiber modes, thus reducing the contribution from such higher order modes. The effects of these changes on mode propagation are modeled, giving a range of fibers with different confinement loss properties which can be tailored to the specific length scale of a desired application. We achieve single-peak reflections from in idual fiber Bragg gratings, significantly improving performance for multipoint sensing and demonstrate this technique by writing 20 gratings onto a single fiber.
Sensing in the presence of strong noise by deep learning of dynamic multimode fiber interference
Publisher: Optica Publishing Group
Date: 26-03-2021
DOI: 10.1364/PRJ.415902
Abstract: A new approach to optical fiber sensing is proposed and demonstrated that allows for specific measurement even in the presence of strong noise from undesired environmental perturbations. A deep neural network model is trained to statistically learn the relation of the complex optical interference output from a multimode optical fiber (MMF) with respect to a measurand of interest while discriminating the noise. This technique negates the need to carefully shield against, or compensate for, undesired perturbations, as is often the case for traditional optical fiber sensors. This is achieved entirely in software without any fiber postprocessing fabrication steps or specific packaging required, such as fiber Bragg gratings or specialized coatings. The technique is highly generalizable, whereby the model can be trained to identify any measurand of interest within any noisy environment provided the measurand affects the optical path length of the MMF’s guided modes. We demonstrate the approach using a sapphire crystal optical fiber for temperature sensing under strong noise induced by mechanical vibrations, showing the power of the technique not only to extract sensing information buried in strong noise but to also enable sensing using traditionally challenging exotic materials.
Gravitational extension of a fluid cylinder with internal structure
Publisher: Cambridge University Press (CUP)
Date: 03-02-2016
DOI: 10.1017/JFM.2016.11
Abstract: Motivated by the fabrication of microstructured optical fibres, a model is presented for the extension under gravity of a slender fluid cylinder with internal structure. It is shown that the general problem decouples into a two-dimensional surface-tension-driven Stokes flow that governs the transverse shape and an axial problem that depends upon the transverse flow. The problem and its solution differ from those obtained for fibre drawing, because the problem is unsteady and the fibre tension depends on axial position. Solutions both with and without surface tension are developed and compared, which show that the relative importance of surface tension depends upon both the parameter values and the geometry under consideration. The model is compared with experimental data and is shown to be in good agreement. These results also show that surface-tension effects are essential to accurately describing the cross-sectional shape.
Reduced loss in extruded soft glass microstructured fibre
Publisher: Institution of Engineering and Technology (IET)
Date: 2007
DOI: 10.1049/EL:20072562
Index matching between passive and active tellurite glasses for use in microstructured fiber lasers: Erbium doped lanthanum-tellurite glass
Publisher: Optica Publishing Group
Date: 19-08-2009
DOI: 10.1364/OE.17.015578
Multimodal Raman spectroscopy and optical coherence tomography for biomedical analysis
Publisher: Wiley
Date: 20-11-2022
Abstract: Optical techniques hold great potential to detect and monitor disease states as they are a fast, non‐invasive toolkit. Raman spectroscopy (RS) in particular is a powerful label‐free method capable of quantifying the biomolecular content of tissues. Still, spontaneous Raman scattering lacks information about tissue morphology due to its inability to rapidly assess a large field of view. Optical Coherence Tomography (OCT) is an interferometric optical method capable of fast, depth‐resolved imaging of tissue morphology, but lacks detailed molecular contrast. In many cases, pairing label‐free techniques into multimodal systems allows for a more erse field of applications. Integrating RS and OCT into a single instrument allows for both structural imaging and biochemical interrogation of tissues and therefore offers a more comprehensive means for clinical diagnosis. This review summarizes the efforts made to date toward combining spontaneous RS‐OCT instrumentation for biomedical analysis, including insights into primary design considerations and data interpretation.
Third harmonic generation in exposed-core microstructured optical fibers
Publisher: The Optical Society
Date: 27-07-2016
DOI: 10.1364/OE.24.017860
Exposed-core microstructured optical fibers for real-time fluorescence sensing
Publisher: Optica Publishing Group
Date: 29-09-2009
DOI: 10.1364/OE.17.018533
Experimental Study on Glass and Polymers: Determining the Optimal Material for Potential Use in Terahertz Technology
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 2020
Integration of conductive reduced graphene oxide into microstructured optical fibres for optoelectronics applications
Publisher: Springer Science and Business Media LLC
Date: 22-02-2016
DOI: 10.1038/SREP21682
Abstract: Integration of conductive materials into optical fibres can largely expand functions of fibre devices including surface plasmon resonator/metamaterial, modulators/detectors, or biosensors. Some early attempts have been made to incorporate metals such as tin into fibres during the fibre drawing process. Due to the restricted range of materials that have compatible melting temperatures with that of silica glass, the methods to incorporate metals along the length of the fibres are very challenging. Moreover, metals are nontransparent with strong light absorption, which causes high fibre loss. This article demonstrates a novel but simple method for creating transparent conductive reduced graphene oxide film onto microstructured silica fibres for potential optoelectronic applications. The strongly confined evanescent field of the suspended core fibres with only 2 μW average power was creatively used to transform graphene oxide into reduced graphene oxide with negligible additional loss. Existence of reduced graphene oxide was confirmed by their characteristic Raman signals, shifting of their fluorescence peaks as well as largely decreased resistance of the bulk GO film after laser beam exposure.
Ultrafast laser inscribed 3D integrated photonics
Publisher: SPIE
Date: 19-12-2027
DOI: 10.1117/12.2025535
THz porous fibers: design, fabrication and experimental characterization
Publisher: Optica Publishing Group
Date: 29-07-2009
DOI: 10.1364/OE.17.014053
Abstract: Porous fibers have been identified as a means of achieving low losses, low dispersion and high birefringence among THz polymer fibers. By exploiting optical fiber fabrication techniques, two types of THz polymer porous fibers--spider-web and rectangular porous fibers--with 57% and 65% porosity have been fabricated. The effective refractive index measured by terahertz time domain spectroscopy shows a good agreement between the theoretical and experimental results indicating a lower dispersion for THz porous fiber compared to THz microwires. A birefringence of 0.012 at 0.65 THz is also reported for rectangular porous fiber.
Wet chemical etching of single-bore microstructured silicon dioxide fibers
Publisher: AIP Publishing
Date: 07-2020
DOI: 10.1063/5.0014335
Abstract: We model the process of wet chemical etching of the external surface of a single-bore microstructured silicon dioxide fiber in hydrofluoric acid (HFA) while water is pumped through the internal channel to prevent etching of it. The model uses the Stokes flow for the velocity throughout the system and the advection–diffusion equation for the concentration of HFA. We determine the etch rate as a function of HFA concentration using data from experiments designed for this purpose, from which we calculate the change in the fiber surface. We solve our equations using a time-stepping finite-element method and verify our model by comparing to results found experimentally. We investigate the effects of different water flow rates, diffusivity, buoyancy, and bore radius. We find the water being pumped through the bore does not fully protect it and there is some etching of the internal channel, which is difficult to see in experimental images. We also obtain an estimate of the diffusivity of high-concentration HFA in water.
Hollow core optical fibres made by glass billet extrusion as sensors for Raman spectroscopy
Publisher: SPIE
Date: 09-12-2016
DOI: 10.1117/12.2244625
High temperature sensing with single material silica optical fibers
Publisher: SPIE
Date: 23-04-2017
DOI: 10.1117/12.2265205
Atom–Photon Coupling from Nitrogen-vacancy Centres Embedded in Tellurite Microspheres
Publisher: Springer Science and Business Media LLC
Date: 22-06-2015
DOI: 10.1038/SREP11486
Abstract: We have developed a technique for creating high quality tellurite microspheres with embedded nanodiamonds (NDs) containing nitrogen-vacancy (NV) centres. This hybrid method allows fluorescence of the NVs in the NDs to be directly, rather than evanescently, coupled to the whispering gallery modes of the tellurite microspheres at room temperature. As a demonstration of its sensing potential, shifting of the resonance peaks is also demonstrated by coating a sphere surface with a liquid layer. This new approach is a robust way of creating cavities for use in quantum and sensing applications.
Tunable multi-wavelength third-harmonic generation using exposed-core microstructured optical fiber
Publisher: The Optical Society
Date: 25-01-2019
DOI: 10.1364/OL.44.000626
Sensing in suspended-core optical fibers
Publisher: IEEE
Date: 2011
Energy level decay and excited state absorption processes in erbium-doped tellurite glass
Publisher: AIP Publishing
Date: 15-10-2011
DOI: 10.1063/1.3651399
Abstract: The fundamental excited state decay processes relating to the 4I11/2 → 4I13/2 transition in singly Er3+-doped tellurite (TZNL) glass have been investigated in detail using time-resolved fluorescence spectroscopy. Selective laser excitation of the 4I11/2 energy level at 970 nm and selective laser excitation of the 4I13/2 energy level at 1485 nm has established that energy transfer upconversion by way of a dipole-dipole interaction between two excited erbium ions in the 4I13/2 level populates the 4I11/2 upper laser level of the 3 μm transition. This upconversion has been analyzed for Er2O3 concentrations between 0.5 mol. % and 2.2 mol. %. The 4I13/2 and 4I11/2 energy levels emit luminescence with peaks located at 1532 nm and 2734 nm, respectively, with radiative decay efficiencies of 65% and 6.8% for the higher (2.2 mol. %) concentration s le. The low 2.7 μm emission efficiency is due to the non-radiative decay bridging the 4I11/2 → 4I13/2 transition and energy transfer to the OH− groups in the glass. Excited state absorption was observed to occur from the 4I13/2 and 4I11/2 levels with peak absorptions occurring at 1550 nm and 971 nm, respectively. The decay time of the 4I11/2 excited state decreased with an increase in the Er3+ concentration, which related to energy transfer to OH− ions that had a measured concentration of 6.6 × 1018 cm−3. Results from numerical simulations showed that a population inversion is reached at a threshold pumping intensity of ∼80 kW cm−2 for a cw laser pump at 976 nm if [Er3+] ≥ 1.2 × 1021 cm−3 (or [Er2O3] ≥ 2.65 mol. %) without OH− impurities being present.
In-fibre second-harmonic generation with embedded two-dimensional materials
Publisher: Springer Science and Business Media LLC
Date: 09-2022
DOI: 10.1038/S41566-022-01067-Y
Abstract: Silica-based optical fibres are a workhorse of nonlinear optics, providing ready access to a range of nonlinear phenomena including solitons and self-phase modulation. However, they have one fundamental limitation: due to the amorphous nature of silica, they do not exhibit second-order nonlinearity, except for negligible contributions from surfaces. Here we demonstrate second-harmonic generation in functionalized optical fibres by using a monolayer of highly nonlinear MoS 2 directly grown on the fibre’s core. The MoS 2 -functionalized fibre exhibits a second-order susceptibility ( χ (2) ) value of 44 pm V –1 and a second-harmonic generation conversion efficiency of 0.2 × 10 –3 m −2 W −1 . This approach is scalable and can be generalized to other transition metal dichalcogenides and a wide range of waveguide systems. Our results demonstrate a new approach towards efficient in-fibre second-harmonic generation sources and may establish a platform for χ (2) -based nonlinear fibre optics, optoelectronics, photonics platforms, integrated optical architectures and active fibre networks.
Radiation dosimetry using optically stimulated luminescence in fluoride phosphate optical fibres
Publisher: The Optical Society
Date: 07-12-2011
DOI: 10.1364/OME.2.000062
Fundamentals and applications of silica and nonsilica holey fibers
Publisher: SPIE
Date: 14-06-2004
DOI: 10.1117/12.537375
Demonstration of an Exposed-Core Fiber Platform for Two-Photon Rubidium Spectroscopy
Publisher: American Physical Society (APS)
Date: 22-07-2015
Fabrication and properties of lead-germanate glasses for high nonlinearity fibre applications
Publisher: Institution of Engineering and Technology
Date: 2013
DOI: 10.1049/CP.2013.1361
Concentration effects in erbium doped tellurite glass
Publisher: IEEE
Date: 12-2006
Antibody immobilization within glass microstructured fibers: a route to sensitive and selective biosensors
Publisher: SPIE
Date: 14-04-2008
DOI: 10.1117/12.801887
Extrusion of fluid cylinders of arbitrary shape with surface tension and gravity
Publisher: Cambridge University Press (CUP)
Date: 24-11-2016
DOI: 10.1017/JFM.2016.729
Abstract: A model is developed for the extrusion in the direction of gravity of a slender fluid cylinder from a die of arbitrary shape. Both gravity and surface tension act to stretch and deform the geometry. The model allows for an arbitrary but prescribed viscosity profile, while the effects of extrudate swell are neglected. The solution is found efficiently through the use of a carefully selected axial Lagrangian coordinate and a transformation to a reduced-time variable. Comparisons between the model and extruded glass microstructured optical fibre preforms show that surface tension has a significant effect on the geometry but the model does not capture all of the behaviour observed in practice. Experimental observations are used in conjunction with the model to argue that some deformation, due neither to surface tension nor gravity, occurs in or near the die exit. Methods are considered to overcome deformation due to surface tension.
Online remote monitoring of explosives by optical fibres
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6RA24080A
Abstract: An AIE-active polytriazole coated fibre tip sensor was developed to detect picric acid with its detection limit down to 100 ppb. The fibre sensor shows high reusability and is promising for remote sensing of explosive.
Nanodiamond in tellurite glass Part I: origin of loss in nanodiamond-doped glass
Publisher: The Optical Society
Date: 24-11-2014
DOI: 10.1364/OME.4.002608
Lanthanide upconversion nanocrystals within microstructured optical fibres; A sensitive platform for biosensing and a new tool for nanocrystal characterisation
Publisher: SPIE
Date: 31-01-2012
DOI: 10.1117/12.915968
Predicting the drawing conditions for microstructured optical fiber fabrication
Publisher: The Optical Society
Date: 02-12-2014
DOI: 10.1364/OME.4.000029
Novel polymer functionalization method for exposed-core optical fiber
Publisher: The Optical Society
Date: 03-07-2014
DOI: 10.1364/OME.4.001515
Sensing Free Sulfur Dioxide in Wine
Publisher: MDPI AG
Date: 06-08-2012
DOI: 10.3390/S120810759
Photoinduced Electron Transfer Based Ion Sensing within an Optical Fiber
Publisher: MDPI AG
Date: 11-10-2011
DOI: 10.3390/S111009560
Effect of surface roughness on metal enhanced fluorescence in planar substrates and optical fibers
Publisher: The Optical Society
Date: 27-05-2016
DOI: 10.1364/OME.6.002128
Multiplexed Optical Fiber Biochemical Sensing Using Cascaded C-Shaped Fabry–Perot Interferometers
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 15-11-2019
Atom-photon coupling from nitrogen-vacancy centers embedded in tellurite microspheres
Publisher: OSA
Date: 2015
Soliton-self-frequency-shift effects and pulse compression in an anomalously dispersive high nonlinearity lead silicate holey fiber
Publisher: IEEE
Date: 2003
Fabrication and optical properties of lead silicate glass holey fibers
Publisher: Elsevier BV
Date: 10-2004
Detection of quantum-dot labeled proteins using soft glass microstructured optical fibers
Publisher: Optica Publishing Group
Date: 2007
DOI: 10.1364/OE.15.017819
Abstract: The detection of quantum-dot labeled proteins is demonstrated within lead silicate soft glass microstructured optical fibers using near infrared light. The protein concentration is measured using a new fluorescence capture approach. Light guided within the fiber is used both to excite and collect fluorescent photons, and the detection limit achieved without optimization of the fiber geometry is 1 nM, using just 3% of the guided mode of the fiber. Issues that currently restrict the detection of lower protein concentrations are discussed.
Soft-glass imaging microstructured optical fibers
Publisher: The Optical Society
Date: 10-12-2018
DOI: 10.1364/OE.26.033604
Optical fibres for distributed corrosion sensing - Architecture and characterisation
Publisher: Trans Tech Publications, Ltd.
Date: 06-2013
DOI: 10.4028/WWW.SCIENTIFIC.NET/KEM.558.522
Abstract: This paper summarises recent work conducted on the development of exposed core microstructured optical fibres for distributed corrosion sensing. Most recently, exposed-core fibres have been fabricated in silica glass, which is known to be reliable under a range of processing and service environments. We characterise the stability of these new silica fibres when exposed to some typical sensing and storage environments. We show the background loss to be the best achieved to date for exposed-core fibres, while the transmission properties are up to ~2 orders of magnitude better than for the previously reported exposed-core fibres produced in soft glass. This provides a more robust fibre platform for corrosion sensing conditions and opens up new opportunities for distributed optical fibre sensors requiring long-term application in harsh environments.
Microchip and ultra-fast laser inscribed waveguide lasers in Yb3+germanate glass
Publisher: The Optical Society
Date: 08-2019
DOI: 10.1364/OME.9.003557
High Temperature Sensing with Suspended Core Fibers
Publisher: OSA
Date: 2016
Effects of pressurization and surface tension on drawing Ge-Sb-Se chalcogenide glass suspended-core fiber
Publisher: The Optical Society
Date: 27-03-2019
DOI: 10.1364/OME.9.001933
Large-area freestanding gold nanomembranes with nanoholes
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C8MH01302K
Abstract: Large-area freestanding gold nanomembranes with nanoholes are created, enabling their property study without substrate effect and emerging applications.
Single-ring hollow core optical fibers made by glass billet extrusion for Raman sensing
Publisher: The Optical Society
Date: 09-03-2016
DOI: 10.1364/OE.24.005911
Tailored Multi‐Color Dispersive Wave Formation in Quasi‐Phase‐Matched Exposed Core Fibers
Publisher: Wiley
Date: 17-01-2022
Abstract: Widely wavelength‐tunable femtosecond light sources in a compact, robust footprint play a central role in many prolific research fields and technologies, including medical diagnostics, biophotonics, and metrology. Fiber lasers are on the verge in the development of such sources, yet widespan spectral tunability of femtosecond pulses remains a pivotal challenge. Dispersive wave generation, also known as Cherenkov radiation, offers untapped potentials to serve these demands. In this work, the concept of quasi‐phase matching for multi‐order dispersive wave formation with record‐high spectral fidelity and femtosecond durations is exploited in selected, partially conventionally unreachable spectral regions. Versatile patterned sputtering is utilized to realize height‐modulated high‐index nano‐films on exposed fiber cores to alter fiber dispersion to an unprecedented degree through spatially localized, induced resonances. Nonlinear optical experiments and simulations, as well as phase‐mismatching considerations based on an effective dispersion, confirm the conversion process and reveal unique emission features, such as almost power‐independent wavelength stability and femtosecond duration. This resonance‐empowered approach is applicable to both fiber and on‐chip photonic systems and paves the way to instrumentalize dispersive wave generation as a unique tool for efficient, coherent femtosecond multi‐frequency conversion for applications in areas such as bioanalytics, life science, quantum technology, or metrology.
In Situ Temperature-Compensated DNA Hybridization Detection Using a Dual-Channel Optical Fiber Sensor
Publisher: American Chemical Society (ACS)
Date: 22-07-2021
Low loss, low dispersion T-ray transmission in microwires
Publisher: IEEE
Date: 05-2007
Related Organisations
No related organisations have been discovered for Heike Ebendorff-Heidepriem.
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