ORCID Profile
0000-0002-1921-3247
Current Organisation
Ecole Centrale Lyon
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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.
Optical Physics | Nanotechnology | Photonics, Optoelectronics and Optical Communications | Optics And Opto-Electronic Physics | Atomic molecular and optical physics | Photonics and Electro-Optical Engineering (excl. Communications) | Microelectronics and Integrated Circuits | Optical And Photonic Systems | Fluidization And Fluid Mechanics | Electrical and Electronic Engineering | Nanophotonics | Nanofabrication growth and self assembly | Optical Physics Not Elsewhere Classified | Astronomical instrumentation | Photonics optoelectronics and optical communications | Biophysics | Nonlinear optics and spectroscopy | Communications Technologies | Glass | Materials Engineering | Astronomy And Astrophysics | Optical Fibre Communications | Optical Networks and Systems
Scientific instrumentation | Expanding Knowledge in Engineering | Telecommunications | Combined operations | Management of Greenhouse Gas Emissions from Information and Communication Services | Emerging Defence Technologies | Network switching equipment | Chemical sciences | Physical sciences | Ceramics, glass and industrial mineral products not elsewhere classified | Fixed Line Data Networks and Services | Clinical health not specific to particular organs, diseases and conditions | Scientific Instruments | Network Infrastructure Equipment | Integrated Circuits and Devices |
Publisher: Optica Publishing Group
Date: 26-09-2008
DOI: 10.1364/OL.33.002206
Abstract: We demonstrate postprocessed microfluidic double-heterostructure cavities in silicon-based photonic crystal slab waveguides. The cavity structure is realized by selective fluid infiltration of air holes using a glass microtip, resulting in a local change of the average refractive index of the photonic crystal. The microcavities are probed by evanescent coupling from a silica nanowire. An intrinsic quality factor of 57,000 has been derived from our measurements, representing what we believe to be the largest value observed in microfluidic photonic crystal cavities to date.
Publisher: SPIE
Date: 21-12-2007
DOI: 10.1117/12.765089
Publisher: Optica Publishing Group
Date: 2020
DOI: 10.1364/CLEOPR.2020.P4_15
Abstract: Enhanced four-wave mixing in silicon nitride waveguides integrated with 2D graphene oxide (GO) films is experimentally demonstrated. We achieve a high conversion efficiency improvement of ~7.3 dB for a 2-cm-long waveguide with monolayer GO film.
Publisher: AIP Publishing
Date: 2021
DOI: 10.1063/5.0033070
Abstract: We experimentally demonstrate supercontinuum (SC) generation in a germanium-on-silicon waveguide. This waveguide exhibits propagation loss between 1.2 dB/cm and 1.35 dB/cm in the 3.6 µm–4.5 µm spectral region for both transverse electric (TE) and transverse magnetic (TM) polarizations. By pumping the waveguide with ∼200 fs pulses at 4.6 µm wavelength, we generate a mid-infrared (IR) SC spanning nearly an octave from 3.39 µm to 6.02 µm at the −40 dB level. Through numerical analysis of the evolution of the SC, we attribute the current limit to further extension into the mid-IR mainly to free-carrier absorption.
Publisher: SPIE
Date: 05-2014
DOI: 10.1117/12.2051689
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 2010
Publisher: IOP Publishing
Date: 07-12-2006
Abstract: The miniaturization of optical devices and their integration for creating adaptive and reconfigurable photonic integrated circuits requires effective platforms and methods to control light over very short distances. We present here several techniques and objects that we have developed to harness light at the sub-micrometer scale. These new tools include planar photonic crystal on nonlinear chalcogenide glasses, tapered silica fibres, optofluidics, and optical trapping. Their association could provide the basic building blocks of completely new architectures and platforms that would have an impact on numerous applications, from optical logic to sensing.
Publisher: Springer Science and Business Media LLC
Date: 05-02-2014
DOI: 10.1038/NCOMMS4246
Abstract: The ability to use coherent light for material science and applications is linked to our ability to measure short optical pulses. While free-space optical methods are well established, achieving this on a chip would offer the greatest benefit in footprint, performance and cost, and allow the integration with complementary signal-processing devices. A key goal is to achieve operation at sub-watt peak power levels and on sub-picosecond timescales. Previous integrated demonstrations require either a temporally synchronized reference pulse, an off-chip spectrometer or long tunable delay lines. Here we report a device capable of achieving single-shot time-domain measurements of near-infrared picosecond pulses based on an ultra-compact integrated CMOS-compatible device, which could operate without any external instrumentation. It relies on optical third-harmonic generation in a slow-light silicon waveguide. Our method can also serve as an in situ diagnostic tool to map, at visible wavelengths, the propagation dynamics of near-infrared pulses in photonic crystals.
Publisher: IEEE
Date: 05-2013
Publisher: IEEE
Date: 07-2015
Publisher: IEEE
Date: 10-2009
Publisher: IEEE
Date: 06-2007
Publisher: Optica Publishing Group
Date: 07-09-2010
DOI: 10.1364/OE.18.020190
Publisher: The Optical Society
Date: 04-12-2015
DOI: 10.1364/OE.23.032202
Publisher: The Optical Society
Date: 06-12-2010
DOI: 10.1364/OE.18.026695
Publisher: IEEE
Date: 07-2012
Publisher: AIP Publishing
Date: 17-09-2007
DOI: 10.1063/1.2785988
Abstract: We demonstrate postprocessed and reconfigurable photonic crystal double-heterostructure cavities via selective fluid infiltration. We experimentally investigate the microfluidic cavities via evanescent probing from a tapered fiber at telecommunication wavelengths. Fabry-Pérot fringes associated with modes of the induced cavity are in good agreement with the theory. We also demonstrate a cavity with quality factor Q=4300. Our defect-writing technique does not require nanometer-scale alterations in lattice geometry and may be undertaken at any time after photonic crystal waveguide fabrication.
Publisher: IEEE
Date: 10-2009
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 11-2012
Publisher: IEEE
Date: 10-2009
Publisher: OSA
Date: 2009
DOI: 10.1364/SL.2009.JWB1
Publisher: Optica Publishing Group
Date: 22-09-2008
DOI: 10.1364/OE.16.015887
Abstract: We demonstrate the spectral and spatial reconfigurability of photonic crystal double-heterostructure cavities in silicon by microfluidic infiltration of selected air holes. The lengths of the microfluidic cavities are changed by adjusting the region of infiltrated holes in steps of several microns. We systematically investigate the spectral signature of these cavities, showing high Q-factor resonances for a broad range of cavity lengths. The fluid can be removed by immersing the device in toluene, offering complete reconfigurability. Our cavity writing technique allows for tolerances in the infiltration process and provides flexibility as it can be employed at any time after photonic crystal fabrication.
Publisher: IEEE
Date: 05-2011
Publisher: The Optical Society
Date: 25-05-2011
DOI: 10.1364/AO.50.002408
Publisher: Optica Publishing Group
Date: 04-09-2020
DOI: 10.1364/OL.402159
Abstract: We demonstrate coherent supercontinuum generation spanning over an octave from a silicon germanium-on-silicon waveguide using ∼ 200 f s pulses at a wavelength of 4 µm. The waveguide is engineered to provide low all-normal dispersion in the TM polarization. We validate the coherence of the generated supercontinuum via simulations, with a high degree of coherence across the entire spectrum. Such a generated supercontinuum could lend itself to pulse compression down to 22 fs.
Publisher: OSA
Date: 2012
Publisher: Springer Science and Business Media LLC
Date: 11-09-2007
Publisher: IEEE
Date: 10-2007
Publisher: IEEE
Date: 09-2010
Publisher: Optica Publishing Group
Date: 27-01-2009
DOI: 10.1364/OE.17.001628
Abstract: We present a technique based on the selective liquid infiltration of photonic crystal (PhC) waveguides to produce very small dispersion slow light over a substantial bandwidth. We numerically demonstrate that this approach allows one to control the group velocity (from c/20 to c/110) from a single PhC waveguide design, simply by choosing the index of the liquid to infiltrate. In addition, we show that this method is tolerant to deviations in the PhC parameters such as the hole size, which relaxes the constraint on the PhC fabrication accuracy as compared to previous structural-based methods for slow light dispersion engineering.
Publisher: IEEE
Date: 11-2008
Publisher: IEEE
Date: 09-2012
Publisher: Optica Publishing Group
Date: 2007
DOI: 10.1364/OE.15.001267
Abstract: We demonstrate highly efficient evanescent coupling via a silica loop-nanowire, to ultra-small (0.5 (lambda/n)(3) ), InAs/InP quantum dot photonic crystal cavities, specifically designed for single photon source applications. This coupling technique enables the tuning of both the Q-factor and the wavelength of the cavity mode independently, which is highly relevant for single photon source applications. First, this allows for the optimization of the extraction efficiency while maintaining a high Purcell factor. Second, the cavity mode can be matched with a spectrally misaligned quantum dot without changing the structure or degrading the Q-factor: a 3 nm resonance shift is reported.
Publisher: SPIE
Date: 11-02-2010
DOI: 10.1117/12.848060
Publisher: OSA
Date: 2008
Publisher: Optica Publishing Group
Date: 30-03-2010
DOI: 10.1364/OE.18.007770
Publisher: OSA
Date: 2011
Publisher: AIP Publishing
Date: 03-03-2005
DOI: 10.1063/1.1872213
Abstract: We have optimized the molecular-beam epitaxy growth conditions of self-organized InAs∕GaAs quantum dots (QDs) to achieve a low density of dots emitting at 1300 nm at low temperature. We used an ultralow InAs growth rate, lower than 0.002ML∕s, to reduce the density to 2dots∕μm2 and an InGaAs capping layer to achieve longer emission wavelength. Microphotoluminescence spectroscopy at low-temperature reveals emission lines characteristic of exciton-biexciton behavior. We also study the temperature dependence of the photoluminescence, showing clear single QD emission up to 90 K. With these results, InAs∕GaAs QDs appear as a very promising system for future applications of single photon sources in fiber-based quantum cryptography.
Publisher: IEEE
Date: 08-2014
Publisher: IEEE
Date: 2008
Publisher: The Optical Society
Date: 26-08-2011
DOI: 10.1364/OL.36.003413
Publisher: IEEE
Date: 07-2008
Publisher: IEEE
Date: 07-2008
Publisher: Springer Science and Business Media LLC
Date: 22-03-2009
Publisher: SPIE
Date: 11-02-2010
DOI: 10.1117/12.840945
Publisher: AIP Publishing
Date: 25-06-2012
DOI: 10.1063/1.4732093
Publisher: The Optical Society
Date: 14-10-2010
DOI: 10.1364/OE.18.022915
Publisher: SPIE
Date: 10-02-2011
DOI: 10.1117/12.876127
Publisher: IEEE
Date: 10-2011
Publisher: Wiley
Date: 17-02-2010
Publisher: Wiley
Date: 19-10-2020
Publisher: AIP Publishing
Date: 07-2023
DOI: 10.1063/5.0149324
Abstract: We report the realization of a silicon–germanium on silicon ring resonator with high Q-factor at mid-infrared wavelengths. The fabricated ring exhibits a loaded Q-factor of 236 000 at the operating wavelength of 4.18 µm. Considering the combined waveguide propagation losses and bending losses, which are measured to be below 0.2 dB/cm, even higher Q-factors could be achieved on this platform. Furthermore, our dispersion engineering of the waveguides should make these microrings suitable for nonlinear optical applications. These results pave the way for sensing applications and nonlinear optics in the mid-infrared range.
Publisher: Optica Publishing Group
Date: 12-02-2009
DOI: 10.1364/OE.17.002944
Abstract: We report nonlinear measurements on 80microm silicon photonic crystal waveguides that are designed to support dispersionless slow light with group velocities between c/20 and c/50. By launching picoseconds pulses into the waveguides and comparing their output spectral signatures, we show how self phase modulation induced spectral broadening is enhanced due to slow light. Comparison of the measurements and numerical simulations of the pulse propagation elucidates the contribution of the various effects that determine the output pulse shape and the waveguide transfer function. In particular, both experimental and simulated results highlight the significant role of two photon absorption and free carriers in the silicon waveguides and their reinforcement in the slow light regime.
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 03-2020
Publisher: Optica Publishing Group
Date: 17-03-2010
DOI: 10.1364/OE.18.006831
Publisher: OSA
Date: 2017
Publisher: Elsevier BV
Date: 05-2010
Publisher: The Optical Society
Date: 27-03-2018
Publisher: The Optical Society
Date: 05-10-2012
DOI: 10.1364/OL.37.004215
Publisher: IEEE
Date: 09-2010
Publisher: SPIE
Date: 06-2012
DOI: 10.1117/12.922140
Publisher: SPIE
Date: 12-02-2009
DOI: 10.1117/12.811083
Publisher: The Optical Society
Date: 10-12-2010
DOI: 10.1364/OE.18.027280
Publisher: Optica Publishing Group
Date: 21-08-2008
DOI: 10.1364/OE.16.013800
Abstract: We demonstrate a direct, single measurement technique for characterizing the dispersion of a photonic crystal waveguide (PCWG) using a tapered fiber evanescent coupling method. A highly curved fiber taper is used to probe the Fabry-Pérot spectrum of a closed PCWG over a broad k-space range, and from this measurement the dispersive properties of the waveguide can be found. Waveguide propagation losses can also be estimated from measurements of closed waveguides with different lengths. The validity of this method is demonstrated by comparing the results obtained on a 'W1' PCWG in chalcogenide glass with numerical simulation.
Publisher: IEEE
Date: 05-2008
Publisher: The Optical Society
Date: 21-07-2011
DOI: 10.1364/OL.36.002818
Publisher: The Optical Society
Date: 29-04-2011
DOI: 10.1364/OL.36.001728
Publisher: IEEE
Date: 2008
Publisher: OSA
Date: 2009
Publisher: Optica Publishing Group
Date: 25-09-2009
DOI: 10.1364/OE.17.018340
Publisher: OSA
Date: 2012
Publisher: IOP Publishing
Date: 24-09-2010
Publisher: IEEE
Date: 2008
Publisher: OSA
Date: 2011
Publisher: Optica Publishing Group
Date: 31-03-2010
DOI: 10.1364/OL.35.001073
Publisher: The Endocrine Society
Date: 02-2011
DOI: 10.1210/ME.2010-0295
Abstract: The acid-labile subunit (ALS) regulates IGF bioavailability by forming heterotrimeric complexes with IGFs and IGF-binding protein-3 (IGFBP-3). A homozygous missense mutation (D440N) resulting in undetectable circulating levels of ALS with a concomitant reduction in IGF-I and IGFBP-3 has been reported to cause mild growth retardation. To understand how this particular mutation affects ALS circulating levels and IGF-transport function, we expressed recombinant ALS and its variants, D440N-ALS, T442A-ALS, and D440N/T442A-ALS, using adenovirus vectors. Compared with wild-type ALS, the secretion of D440N-ALS was 80% lower. The D440N mutation was proposed to generate an N-glycosylation site additional to the seven existing motifs in ALS. D440N-ALS appeared larger than ALS, attributable to N-linked glycans because deglycosylation with N-glycosidase F reduced both proteins to the same molecular mass. When ALS was incubated with IGF-I and IGFBP-3, 70–80% of IGF-I was detected by gel-filtration chromatography in forms corresponding to the 150-kDa ternary complex. In contrast, when D440N-ALS was tested, less than 30% of IGF-I was found in high molecular mass complexes. Two other ALS variants mutated in the same putative glycosylation site, D440N/T442A-ALS and T442A-ALS, showed similar chromatographic profiles to wild-type ALS. The D440N mutation in ALS generates a hyperglycosylated form with impaired secretion and complex formation, potentially leading to dysregulation of endocrine IGF, thus contributing to the growth retardation observed in the affected patient. This is the first study to explain how a natural mutation, D440N, in ALS impairs its function.
Publisher: Springer Science and Business Media LLC
Date: 02-2007
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 03-2005
Publisher: IEEE
Date: 11-2010
Publisher: IEEE
Date: 09-2010
Publisher: OSA
Date: 2009
Publisher: The Optical Society
Date: 08-01-2019
Publisher: SPIE
Date: 31-08-2006
DOI: 10.1117/12.678008
Publisher: OSA
Date: 2011
Start Date: 05-2007
End Date: 05-2010
Amount: $231,090.00
Funder: Australian Research Council
View Funded ActivityStart Date: 2015
End Date: 08-2021
Amount: $743,900.00
Funder: Australian Research Council
View Funded ActivityStart Date: 10-2009
End Date: 12-2010
Amount: $350,000.00
Funder: Australian Research Council
View Funded ActivityStart Date: 2009
End Date: 12-2009
Amount: $250,000.00
Funder: Australian Research Council
View Funded ActivityStart Date: 2010
End Date: 12-2010
Amount: $270,000.00
Funder: Australian Research Council
View Funded ActivityStart Date: 2023
End Date: 12-2029
Amount: $34,948,820.00
Funder: Australian Research Council
View Funded ActivityStart Date: 06-2011
End Date: 12-2012
Amount: $400,000.00
Funder: Australian Research Council
View Funded Activity