Dr. Xun Li Profile

Dr. Xun Li

Professor at McMaster Univ.

SPIE Involvement:

Author

Publications (36)

Proceedings Article | 12 March 2024 Paper

Silicon nitride devices for visible and near-infrared refractive index sensing

Raghi El Shamy, Xun Li, Mohamed Swillam

Proceedings Volume 12889, 1288915 (2024) https://doi.org/10.1117/12.3007896

KEYWORDS: Sensors, Silicon nitride, Refractive index, Optical components, Visible radiation, Biosensing

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Proceedings Article | 21 April 2023 Paper

Visible and near-infrared photonic components library based on silicon nitride platform

Raghi El Shamy, Alaa Sultan, Mohamed Swillam, Xun Li

Proceedings Volume PC12424, PC1242410 (2023) https://doi.org/10.1117/12.2650447

KEYWORDS: Waveguides, Silicon nitride, Finite-difference time-domain method, Silicon, Waveguide modes, Oxides, LIDAR, Fabrication, Directional couplers, Visible radiation

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Proceedings Article | 17 March 2023 Presentation + Paper

Prediction of medium chemical concentration with micro-ring resonators and deep learning

Thomas Mikhail, Raghi El Shami, Mohamed Swillam, Xun Li

Proceedings Volume 12425, 124250D (2023) https://doi.org/10.1117/12.2655968

KEYWORDS: Signal to noise ratio, Resonators, Neural networks, Microrings, Microresonators, Education and training, Machine learning, Data modeling, Refractive index, Mixtures

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Proceedings Article | 18 December 2019 Paper

An electro-optic controllable polarization rotator based on the GaN/Al0.3Ga0.7N superlattice waveguide

Tao Wang, Xun Li

Proceedings Volume 11334, 113340H (2019) https://doi.org/10.1117/12.2542556

KEYWORDS: Polarization, Electrodes, Superlattices, Waveguides, Electro optics, Polarization control, Gallium nitride, Control systems, Dielectric polarization, Infrared radiation

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Proceedings Article | 28 February 2017 Paper

Imaging through strongly scattering media with subwavelength resolution and good anti-noise performance

Yulan Zhou, Xun Li

Proceedings Volume 10256, 102560T (2017) https://doi.org/10.1117/12.2256437

KEYWORDS: Scattering media, Image resolution, Light scattering, Microscopes

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SPIE Journal Paper | 1 April 2016

Waveguide-based antireflection structure

Zhongshu Zhu, Xun Li

OE, Vol. 55, Issue 04, 047101, (April 2016) https://doi.org/10.1117/12.10.1117/1.OE.55.4.047101

KEYWORDS: Waveguides, Antireflective coatings, Polarization, Interfaces, Optical isolators, Lithium, Free space, Reflectivity, Silicon, Optical engineering

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Proceedings Article | 25 September 2014 Paper

Roles of high order bending modes in optical wave coupling

Haibo Liang, Jianwei Mu, Xun Li, Wei-Ping Huang

Proceedings Volume 9288, 928813 (2014) https://doi.org/10.1117/12.2074778

KEYWORDS: Waveguides, Refractive index, Energy transfer, Waveguide modes, Cladding, Photonic integrated circuits, Integrated circuits, Radiation effects, Maxwell's equations, Dielectrics

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Proceedings Article | 25 September 2014 Paper

Investigation of mode partition noise in Fabry-Perot laser diode

Qingyi Guo, Lanxin Deng, Jianwei Mu, Xun Li, Wei-Ping Huang

Proceedings Volume 9288, 928816 (2014) https://doi.org/10.1117/12.2075233

KEYWORDS: Semiconductor lasers, Modulation, Optical simulations, Fabry–Perot interferometers, Passive optical networks, Linear filtering, Dispersion, Transmitters, Optical networks, Network architectures

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Proceedings Article | 11 October 2013 Paper

Adjoint variable method for general material models towards efficient sensitivity analysis of subwavelength structures

Osman Ahmed, Mohamed Bakr, Xun Li, Tsuyoshi Nomura

Proceedings Volume 8915, 89151Q (2013) https://doi.org/10.1117/12.2038645

KEYWORDS: Metamaterials, Mathematical modeling, Computer aided design, Scattering, Matrices, Optimization (mathematics), Algorithm development, Finite-difference time-domain method, Inverse optics, Dispersion

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Proceedings Article | 14 March 2013 Paper

Wideband sensitivity analysis of plasmonic structures

Osman Ahmed, Mohamed Bakr, Xun Li, Tsuyoshi Nomura

Proceedings Volume 8619, 86190R (2013) https://doi.org/10.1117/12.2004889

KEYWORDS: Plasmonics, Computer aided design, Scattering, Teeth, Magnetism, Computer simulations, Matrices, Resonators, Optimization (mathematics), Solid modeling

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Proceedings Article | 24 October 2012 Paper

Highly efficient design methodology for very large scale coupled microcavities

Mohamed Swillam, Osman Ahmed, Mohamed Bakr, Xun Li

Proceedings Volume 8412, 841215 (2012) https://doi.org/10.1117/12.2002506

KEYWORDS: Optical microcavities, Resonators, Filtering (signal processing), Optical filters, Microrings, Wavelength division multiplexing, Reflectivity, Convex optimization, Computer simulations, Linear filtering

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Proceedings Article | 24 October 2012 Paper

Efficient sensitivity analysis of photonic structures with transmission line modeling

Osman Ahmed, Mohamed Bakr, Mohamed Swillam, Xun Li

Proceedings Volume 8412, 841213 (2012) https://doi.org/10.1117/12.2002835

KEYWORDS: Dielectrics, Scattering, Waveguides, Fiber Bragg gratings, Optimization (mathematics), Computer aided design, Computer simulations, Photodetectors, Matrices, Thulium

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Proceedings Article | 2 February 2012 Paper

A perturbation approach for the design of coupled resonator optical waveguides (CROWs)

Osman Ahmed, Mohamed Swillam, Mohamed Bakr, Xun Li

Proceedings Volume 8264, 82640H (2012) https://doi.org/10.1117/12.907407

KEYWORDS: Resonators, Waveguides, Filtering (signal processing), Optical filters, Linear filtering, Nonlinear filtering, Optimal filtering, Reflectivity, Microrings, Detection and tracking algorithms

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Proceedings Article | 8 September 2011 Paper

Graded index MMI and its application in optical communications

Mohamed Swillam, Mohamed Bakr, Xun Li

Proceedings Volume 8007, 80070W (2011) https://doi.org/10.1117/12.905403

KEYWORDS: Brain-machine interfaces, Optical communications, Polarization, Waveguides, Optical switching, Refractive index, 3D modeling, Beam propagation method, Multimode interference devices, Integrated optics

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Proceedings Article | 8 September 2011 Paper

Accurate characterization of doped semiconductors with terahertz spectroscopy

Osman Ahmed, Mohamed Swillam, Mohamed Bakr, Xun Li

Proceedings Volume 8007, 80071K (2011) https://doi.org/10.1117/12.905581

KEYWORDS: Semiconductors, Terahertz radiation, Statistical analysis, Terahertz spectroscopy, Refractive index, Data modeling, Error analysis, Spectroscopy, Statistical modeling, Doping

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Proceedings Article | 24 February 2011 Paper

Efficient material parameters estimation with terahertz time-domain spectroscopy

Osman Ahmed, Mohamed Swillam, Mohamed Bakr, Xun Li

Proceedings Volume 7938, 793805 (2011) https://doi.org/10.1117/12.873336

KEYWORDS: Refractive index, Terahertz spectroscopy, Statistical analysis, Terahertz radiation, Statistical modeling, Spectroscopy, Data modeling, Dielectrics, Carbon nanotubes, Error analysis

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Proceedings Article | 21 February 2011 Paper

Ultra wideband integrated polarization splitter/combiner using electro-optic effect in GaAs

Mohamed Swillam, Mohamed Bakr, Xun Li

Proceedings Volume 7933, 79330V (2011) https://doi.org/10.1117/12.873484

KEYWORDS: Polarization, Electro optics, Brain-machine interfaces, Gallium arsenide, Waveguides, Refractive index, Beam propagation method, Wave propagation, Multimode interference devices, Electro optical design

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Proceedings Article | 23 September 2010 Paper

Efficient approaches for dispersion engineering of guided wave components

Mohamed Swillam, Mohamed Bakr, Xun Li

Proceedings Volume 7750, 775021 (2010) https://doi.org/10.1117/12.872506

KEYWORDS: Waveguides, Dispersion, Wave propagation, Refractive index, Signal attenuation, Numerical analysis, Computer simulations, Lithium, Computer engineering, Modal analysis

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Proceedings Article | 23 September 2010 Paper

Experimental and theoretical characterization of Nd:YVO4/PPMgO:LN green lasers

Qing-Yang Xu, Yang Lu, Yi Gan, Xun Li, Chang-Qing Xu

Proceedings Volume 7750, 775016 (2010) https://doi.org/10.1117/12.872629

KEYWORDS: Nonlinear crystals, Second-harmonic generation, Crystals, Neodymium lasers, Absorption, Laser crystals, Thermal effects, Autoregressive models, Wave propagation, Laser optics

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Proceedings Article | 26 February 2010 Paper

Ultra-wideband integrated 2x2 optical router using novel MMI design

Mohamed Swillam, Mohamed Bakr, Xun Li

Proceedings Volume 7598, 75980L (2010) https://doi.org/10.1117/12.841383

KEYWORDS: Brain-machine interfaces, Waveguides, Refractive index, Optical design, Beam propagation method, Integrated optics, Switches, Optical switching, Etching, Cladding

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Proceedings Article | 12 February 2010 Paper

Efficient sensitivity analysis of surface plasmon waveguide structures

Mohamed Swillam, Mohamed Bakr, Xun Li

Proceedings Volume 7604, 76041C (2010) https://doi.org/10.1117/12.841379

KEYWORDS: Metals, Waveguides, Beam propagation method, Refractive index, Matrices, Wave propagation, Silicon, Gold, Surface plasmons, Channel waveguides

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Proceedings Article | 5 August 2009 Paper

Experimental and theoretical characterization of multimode fiber Bragg grating external cavity lasers

Qing-Yang Xu, Jian-Wei Mu, Chang-Qing Xu, Xun Li

Proceedings Volume 7386, 73862O (2009) https://doi.org/10.1117/12.839806

KEYWORDS: Multimode fibers, Computer simulations, Modulation, Fiber Bragg gratings, Fiber lasers, Single mode fibers, Reflectivity, Semiconductor lasers, Refractive index, Quantum wells

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Proceedings Article | 12 August 2008 Paper

Accurate and efficient sensitivity analysis using the beam propagation method

Mohamed Swillam, Mohamed Bakr, Xun Li

Proceedings Volume 7099, 70991C (2008) https://doi.org/10.1117/12.804484

KEYWORDS: Beam propagation method, Matrices, Refractive index, Brain-machine interfaces, Waveguides, Fiber couplers, Beam analyzers, Polishing, Computer simulations, Analytical research

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Proceedings Article | 19 November 2007 Paper

Modulation responses and problems of a novel monolithically integrated optical transceiver for EPON

Huan Zhang, Wei Li, Teng Wang

Proceedings Volume 6782, 67820K (2007) https://doi.org/10.1117/12.743357

KEYWORDS: Modulation, Transceivers, Optoelectronics, Quantum wells, Semiconductor lasers, Integrated optics, Fiber to the x, Refractive index, Lithium, Roads

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Proceedings Article | 26 October 2007 Paper

Accurate and efficient sensitivity extraction of complex structures using FDTD

Mohamed Swillam, Mohamed Bakr, Xun Li

Proceedings Volume 6796, 67963A (2007) https://doi.org/10.1117/12.779122

KEYWORDS: Finite-difference time-domain method, Waveguides, Reflectivity, Antireflective coatings, Computer simulations, Matrices, Semiconductor lasers, Reflection, Autoregressive models, Fourier transforms

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Proceedings Article | 26 October 2007 Paper

Crosstalk analysis in in-line transceiver

Xiaobin Hong, Qingyang Xu, Wanguo Liang, Weiping Huang, Xun Li, Chang Qing Xu

Proceedings Volume 6796, 67963I (2007) https://doi.org/10.1117/12.778949

KEYWORDS: Modulation, Transceivers, Receivers, Integrated optics, Photodiodes, Transmitters, Laser resonators, Refractive index, Broadband telecommunications, Photonic integrated circuits

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Proceedings Article | 25 September 2007 Paper

Coherent control of multiple quantum well active photonic band gaps via infrared dressing of super-radiant excitons

Seyed Sadeghi, Wei Li, Xun Li, Wei-Ping Huang

Proceedings Volume 6640, 66400Q (2007) https://doi.org/10.1117/12.733309

KEYWORDS: Excitons, Quantum wells, Infrared lasers, Infrared radiation, Absorption, Refractive index, Transparency, Beam controllers, Active optics, Radio propagation

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Proceedings Article | 25 September 2007 Paper

Functional photonic band gap structures based on electromagnetically induced transparency in the conduction intersubband transitions of quantum wells

Wei Li, Seyed Sadeghi, Xun Li, Wei-Ping Huang

Proceedings Volume 6640, 66400H (2007) https://doi.org/10.1117/12.733323

KEYWORDS: Quantum wells, Refractive index, Beam controllers, Waveguides, Absorption, Transparency, Aluminum, Control systems, Chemical species, Gallium

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Proceedings Article | 8 September 2006 Paper

Simulation of crosstalk in integrated distributed feedback laser-photodiode optical transceivers

Qingyang Xu, Xiaobin Hong, Wanguo Liang, Xun Li, Chang-Qing Xu, Wei-Ping Huang

Proceedings Volume 6343, 63431D (2006) https://doi.org/10.1117/12.707724

KEYWORDS: Modulation, Transceivers, Integrated optics, Optical simulations, Laser optics, Refractive index, Computer simulations, Reflectivity, Waveguides, Photonic integrated circuits

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Proceedings Article | 13 April 2005 Paper

Ultrabroad-bandwidth and high-power superluminescent light emitting diodes

Jingyi Wang, Lisa Li, Wenchao Xu, Rongwen Yu, Jothilingam Ramalingam, Zhenghua Wu, Weiming Zhu, Xun Li

Proceedings Volume 5690, (2005) https://doi.org/10.1117/12.589624

KEYWORDS: Quantum wells, Optical coherence tomography, Coherence (optics), Light emitting diodes, Fiber optics sensors, Diodes, Structural design, Waveguides, Semiconducting wafers, Lithium

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Proceedings Article | 8 December 2003 Paper

Time-domain modeling and simulation of the broadband behavior of semiconductor optical amplifiers

Xun Li, Jongwoon Park

Proceedings Volume 5248, (2003) https://doi.org/10.1117/12.513993

KEYWORDS: Interference (communication), Semiconductor optical amplifiers, Semiconductor lasers, Optical amplifiers, Polarization, Wave propagation, Modeling and simulation, Instrument modeling, Lithium, Systems modeling

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Proceedings Article | 30 January 1997 Paper

Optimized design for adiabatic frequency chirp in semiconductor DFB lasers monolithically integrated with Mach-Zehnder modulators

Xun Li, Wei-Ping Huang

Proceedings Volume 2918, (1997) https://doi.org/10.1117/12.265365

KEYWORDS: Modulators, Waveguides, Semiconductor lasers, Modulation, Waveguide modes, Reflectivity, Phase shift keying, Semiconductors, Telecommunications, Lithium

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Proceedings Article | 23 September 1996 Paper

Fabrication of fused silica phase masks by reactive ion etching

Genxiang Chen, Shuisheng Jian, Ling Yang, Xun Li, Meiqiao Cheng, Yaqing Zhu, Li Li, Huang Ge, Wei Wang

Proceedings Volume 2885, (1996) https://doi.org/10.1117/12.251861

KEYWORDS: Silica, Photomasks, Reactive ion etching, Etching, Photoresist materials, Metals, Holography, Scanning electron microscopy, Helium cadmium lasers, Plasma

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Proceedings Article | 23 September 1996 Paper

Analysis of near-field holographic pattern formation using phase masks

Genxiang Chen, Shuisheng Jian, Ling Yang, Xun Li, Huang Ge, Wei Wang

Proceedings Volume 2885, (1996) https://doi.org/10.1117/12.251862

KEYWORDS: Photomasks, Holography, Near field, Diffraction, Diffraction gratings, Excimer lasers, Laser applications, Wave propagation, Laser beam propagation, Teeth

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Proceedings Article | 20 September 1996 Paper

Analysis of dispersion compensation using linearly chirped fiber gratings with uniform coupling profile

Genxiang Chen, Shuisheng Jian, Ling Yang, Xun Li, Huang Ge, Wei Wang

Proceedings Volume 2893, (1996) https://doi.org/10.1117/12.252032

KEYWORDS: Fiber Bragg gratings, Gaussian pulse, Optical fibers, Optical communications, Telecommunications, Reflectivity, Picosecond phenomena, Fourier transforms, Analytical research, Lithium

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Proceedings Article | 20 September 1996 Paper

Fabrication of high-reflectivity fiber Bragg gratings by excimer laser irradiated phase masks

Genxiang Chen, Shuisheng Jian, Ling Yang, Xun Li, Huang Ge, Wei Wang

Proceedings Volume 2893, (1996) https://doi.org/10.1117/12.252031

KEYWORDS: Fiber Bragg gratings, Reflectivity, Excimer lasers, Spectrum analysis, Light sources, Telecommunications, Optical fibers, Ultraviolet radiation, Photomasks, Lithium

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Showing 5 of 36 publications

Proceedings Volume Editor (1)

SPIE Conference Volume | 23 February 2012

Photonics and Optoelectronics Meetings (POEM) 2011: Optoelectronic Devices and Integration

Conference Committee Involvement (1)

Optoelectronic Devices and Integration

2 November 2011 | Wuhan, China

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