Prof. Qi Wang Profile

Prof. Qi Wang

at Beijing Univ of Posts and Telecommunications

SPIE Involvement:

Author

Publications (45)

Proceedings Article | 25 March 2024 Paper

Image dehazing algorithm for image partition optimization based on generalized Gaussian function

Xiaoxia Du, Kai Liu, Yongqing Huang, Xiaofeng Duan, Qi Wang

Proceedings Volume 13089, 130890F (2024) https://doi.org/10.1117/12.3020748

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Proceedings Article | 18 December 2023 Paper

Formation of nano-cone structures on silicon via maskless reactive ion etching

Jiacheng Lin, Hao Liu, Chen Jiang, Qi Wang, Kai Liu, Xiaomin Ren

Proceedings Volume 12961, 129610C (2023) https://doi.org/10.1117/12.3008000

KEYWORDS: Etching, Silicon, Reactive ion etching, Oxides, Scanning electron microscopy, Plasma, Vacuum chambers, Atomic force microscopy, Nanostructures, Fluorine

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Proceedings Article | 23 January 2023 Paper

Rapid and facile characterization of dislocations in cross-sectional GaAs/Si films using electron channeling contrast imaging

Chen Jiang, Hao Liu, Jian Li, Yidong Zhang, Chuanchuan Li, Jun Wang, Qi Wang, Xin Wei, Xiaomin Ren

Proceedings Volume 12556, 125561G (2023) https://doi.org/10.1117/12.2647200

KEYWORDS: Gallium arsenide, Transmission electron microscopy, Silicon, Scanning electron microscopy, Crystals, Heteroepitaxy

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Proceedings Article | 24 November 2021 Paper

Simultaneous enhancement of radial resolution and side lobe suppression of tubular hyperlens via introducing a nano-gap layer

Chao Zhang, Qi Wang, Hao Liu, Xueguang Yuan, Yunxuan Zhu, Xiaomin Ren

Proceedings Volume 12066, 120661M (2021) https://doi.org/10.1117/12.2607111

KEYWORDS: Dielectrics, Refractive index, Metals, Wave propagation, Radio propagation, Metamaterials, Image resolution, Diffraction, Stereoscopy, Silver

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Proceedings Article | 20 February 2018 Paper

A new fiber sensor based on graphene coating technique for wearable equipment

Ensen Wu, Jinnan Zhang, Min Qiao, Yanghua Cao, Qi Wang, Xiaomin Ren, Yong Zuo

Proceedings Volume 10697, 106974G (2018) https://doi.org/10.1117/12.2307776

KEYWORDS: Sensors, Fiber optics sensors, Resistance, Graphene, Composites, Coating, Telecommunications, Scanning electron microscopy, Mechanical sensors, Copper

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SPIE Journal Paper | 25 January 2018

All-optical simultaneous multichannel quadrature phase shift keying signal regeneration based on phase-sensitive amplification

Hongxiang Wang, Qi Wang, Lin Bai, Yuefeng Ji

OE, Vol. 57, Issue 01, 016111, (January 2018) https://doi.org/10.1117/12.10.1117/1.OE.57.1.016111

KEYWORDS: Phase shift keying, Interference (communication), Signal processing, Optical amplifiers, Modulation, Terahertz radiation, Four wave mixing, Superposition, Wavelength division multiplexing, Optical engineering

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Proceedings Article | 9 November 2016 Paper

Fabrication and performance of In0.66Ga0.34As0.73P0.27/In0.89Ga0.11As0.23P0.77 multiple-quantum-well lasers

Jia Chen, Qi Wang, Hao Liu, Zhiming Li, Xiaomin Ren

Proceedings Volume 10017, 100170L (2016) https://doi.org/10.1117/12.2245987

KEYWORDS: Quantum wells, Metalorganic chemical vapor deposition, Semiconductor lasers, Gallium, Laser damage threshold, Optical communications, Arsenic, Crystals, X-ray diffraction, Luminescence

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Proceedings Article | 4 November 2016 Paper

Gold nanoparticle-induced diameter reduction and enhanced Raman shift in self-rolled-up InGaAs/GaAs microtubes

Xiankun Wang, Qi Wang, Zhaoer Chai, Guoming Mao, Hao Liu, Xiaomin Ren

Proceedings Volume 10027, 100270N (2016) https://doi.org/10.1117/12.2245993

KEYWORDS: Gallium, Phonons, Nanolithography, Lab on a chip, Gold, Gallium arsenide, Raman spectroscopy, Scanning electron microscopy, Nanoparticles, Optical lithography

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Proceedings Article | 3 November 2016 Paper

Graphite oxide-coated Au nanoparticles for improved SERS sensing

Bingfei Liu, Qi Wang, Tian Tian, Guoming Mao, Hao Liu, Xiao Min Ren

Proceedings Volume 10028, 1002807 (2016) https://doi.org/10.1117/12.2245991

KEYWORDS: Gold, Graphene, Composites, Nanoparticles, Molecules, Annealing, Sputter deposition, Metals, Raman spectroscopy, Scanning electron microscopy

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Proceedings Article | 27 November 2012 Paper

Subwavelength dielectric-loaded plasmonic waveguides based on a core-shell structure

Bing Shen, Yongqing Huang, Xiaomin Ren, Qi Wang, Xia Zhang, Xiaofeng Duan, Dong Zhang, Jinghua Hu

Proceedings Volume 8555, 855505 (2012) https://doi.org/10.1117/12.999493

KEYWORDS: Waveguides, Wave propagation, Plasmonic waveguides, Refractive index, Resonators, Metals, Cladding, Interfaces, Photonics, Dielectrics

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Proceedings Article | 27 November 2012 Paper

The influence of growth parameters on the formation on InAs/GaAs by MOCVD

Hui Wang, Qi Wang, Zhi-Gang Jia, Ying-Ce Yan, Yong-Qing Huang, Xiao-Min Ren

Proceedings Volume 8555, 855511 (2012) https://doi.org/10.1117/12.999608

KEYWORDS: Metalorganic chemical vapor deposition, Quantum dots, Indium arsenide, Gallium arsenide, Luminescence, Temperature metrology, Chemical vapor deposition, Photonics, Optical communications, Telecommunications

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Proceedings Article | 27 November 2012 Paper

Add-drop filters based on asymmetric high-order microring resonators

Dong Zhang, Yongqing Huang, Xiaomin Ren, Xiaofeng Duan, Bing Shen, Qi Wang, Xia Zhang, Shiwei Cai

Proceedings Volume 8555, 85550U (2012) https://doi.org/10.1117/12.999382

KEYWORDS: Microrings, Resonators, Optical filters, Wavelength division multiplexing, Telecommunications, Waveguides, Optical communications, Optoelectronic devices, Finite-difference time-domain method, Solids

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Proceedings Article | 27 November 2012 Paper

A flat-top steep-edge waveguide photodetector composed of cascaded silicon microring resonators

Jinhua Hu, Yongqing Huang, Xiaofeng Duan, Xinye Fan, Fuquan Hu, Luo Yang, Bing Shen, Qi Wang, Xia Zhang, Xiao-Min Ren

Proceedings Volume 8555, 85550X (2012) https://doi.org/10.1117/12.999483

KEYWORDS: Silicon, Waveguides, Photodetectors, Microrings, Resonators, Optical filters, Quantum efficiency, Polarization, Signal detection, Optical communications

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Proceedings Article | 27 November 2012 Paper

Analysis and design of a tunable filtering waveguide based on silicon-on-insulator

Fuquan Hu, Yongqing Huang, Xiaofeng Duan, Xu Zhang, Xinye Fan, Xiaomin Ren, Qi Wang, Xia Zhang, Shiwei Cai, Jinhua Hu

Proceedings Volume 8555, 85550P (2012) https://doi.org/10.1117/12.999257

KEYWORDS: Waveguides, Silicon, Refractive index, Tunable filters, Matrices, Integrated optics, Fabry–Perot interferometers, Silicon photonics, Integration, Electronic filtering

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Proceedings Article | 27 November 2012 Paper

Selective etching of GaAs/Si and InP/GaAs heteroepitaxial wafer

Xiong Zhen, Qi Wang, Zhi-Gang Jia, Yong-Qing Huang, Xiao-Min Ren

Proceedings Volume 8555, 85550Y (2012) https://doi.org/10.1117/12.999497

KEYWORDS: Semiconducting wafers, Etching, Gallium arsenide, Wet etching, Scanning electron microscopy, Silicon, Heterojunctions, Crystals, Electron microscopes, Chemical vapor deposition

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Proceedings Article | 15 October 2012 Paper

Design and analysis of InGaAs PIN photodetectors integrated on silicon-on-insulator racetrack resonators

Fuquan Hu, Yongqing Huang, Xiaofeng Duan, Xinye Fan, Xiaomin Ren, Qi Wang, Xia Zhang, Xin Guo, Shiwei Cai

Proceedings Volume 8419, 84191T (2012) https://doi.org/10.1117/12.971430

KEYWORDS: Resonators, Photodetectors, Silicon, Waveguides, Optical instrument design, Quantum efficiency, Integrated optics, Indium gallium arsenide, Integration, Brain-machine interfaces

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Proceedings Article | 15 October 2012 Paper

A monothically integrated dual-wavelength photodetector with a step-shaped Fabry-Pérot filter

Xinye Fan, Yongqing Huang, Xiaomin Ren, Xiaofeng Duan, Fuquan Hu, Qi Wang, Shiwei Cai

Proceedings Volume 8419, 84191S (2012) https://doi.org/10.1117/12.973659

KEYWORDS: Photodetectors, Gallium arsenide, Heteroepitaxy, Quantum efficiency, Optical instrument design, Metalorganic chemical vapor deposition, Optical filters, Distributed Bragg reflectors, Tunable lasers, Etching

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Proceedings Article | 5 December 2011 Paper

The influence of graded InxGa1-xAs on strain distribution and the band gap in the InAs/GaAs quantum dots

Jia Wang, Qi Wang, Xin Guo, Xiaomin Ren, Xia Zhang, Yongqing Huang

Proceedings Volume 8198, 81980K (2011) https://doi.org/10.1117/12.921319

KEYWORDS: Quantum dots, Indium arsenide, Gallium arsenide, Crystals, Optical properties, Finite element methods, Indium, Indium gallium arsenide, Gallium, Optical communications

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Proceedings Article | 1 December 2011 Paper

First-principles calculations of band-gap properties of zinc-blende BxGa1-xN and BxGa1-xNyAs1-y alloys

Kun-He Lv, Qi Wang, Ying-Ce Yan, Xin Guo, Yong-Qing Huang, Xiao-Min Ren

Proceedings Volume 8198, 819807 (2011) https://doi.org/10.1117/12.921316

KEYWORDS: Boron, Gallium nitride, Gallium, Silicon, Nitrogen, Gallium arsenide, Group III-V semiconductors, Optoelectronic devices, Barium, Photonics

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Proceedings Article | 28 November 2011 Paper

The effect of growth temperature on InAs quantum dots grown by MOCVD

Tianhe Li, Xin Guo, Qi Wang, Pengyu Wang, Zhigang Jia, Xiaomin Ren, Yongqing Huang, Shiwei Cai

Proceedings Volume 8308, 83082B (2011) https://doi.org/10.1117/12.917614

KEYWORDS: Indium arsenide, Gallium arsenide, Metalorganic chemical vapor deposition, Chemical species, Crystals, Temperature metrology, Atomic force microscopy, Quantum dots, Optical properties, Gallium

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Proceedings Article | 28 November 2011 Paper

Effect of boron on the surface and optical properties for (B)InAs/GaAs self-assembled quantum dots grown by MOCVD

Pengyu Wang, Qi Wang, Xin Guo, Zhigang Jia, Tianhe Li, Xiaomin Ren, Shiwei Cai

Proceedings Volume 8308, 83082C (2011) https://doi.org/10.1117/12.917901

KEYWORDS: Indium arsenide, Boron, Gallium arsenide, Quantum dots, Indium gallium arsenide, Chemical species, Indium, Optical properties, Metalorganic chemical vapor deposition, Atomic force microscopy

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Proceedings Article | 7 January 2011 Paper

Growth of n-doped GaAs nanowires by Au-assisted metalorganic chemical vapor deposition: effect of flux rates of n-type dopants

Jingwei Guo, Hui Huang, Minjia Liu, Xiaomin Ren, Shiwei Cai, Wei Wang, Qi Wang, Yongqing Huang, Xia Zhang

Proceedings Volume 7987, 79870M (2011) https://doi.org/10.1117/12.888518

KEYWORDS: Gallium arsenide, Metalorganic chemical vapor deposition, Gold, Scanning electron microscopy, Transmission electron microscopy, Zinc, Diffusion, Semiconductors, Nanowires, Nanoparticles

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Proceedings Article | 18 November 2010 Paper

Parallel-cascaded micro-ring resonators waveguide photodetector with flat-top and steep-edge response

Yuanfang Qin, Yongqing Huang, Xiaomin Ren, Xiaofeng Duan, Hui Huang, Qi Wang

Proceedings Volume 7847, 78472S (2010) https://doi.org/10.1117/12.870487

KEYWORDS: Resonators, Photodetectors, Waveguides, Microrings, Quantum efficiency, Wavelength division multiplexing, Electronic filtering, Absorption, Networks, Optical filters

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Proceedings Article | 18 November 2010 Paper

Flat-top steep-edge response of photodetetors by circuit control method

Li Wang, Yongqing Huang, Xiaofeng Duan, Qiang Yan, Xiaomin Ren, Hui Huang, Qi Wang, Xia Zhang

Proceedings Volume 7847, 78472E (2010) https://doi.org/10.1117/12.869964

KEYWORDS: Photodetectors, Optical amplifiers, Wavelength division multiplexing, Networks, Optical testing, Optical signal processing, Lithium, Photonics, Optical communications, Telecommunications

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Proceedings Article | 13 November 2010 Paper

A novel optical heterodyne approach for measuring frequency responses of photodetectors

Qiang Yan, Yongqing Huang, Xiaofeng Duan, Damin He, Hui Huang, Xia Zhang, Qi Wang, Xiaomin Ren

Proceedings Volume 7844, 78440I (2010) https://doi.org/10.1117/12.870506

KEYWORDS: Heterodyning, Calibration, Photodetectors, Wafer-level optics, Spectrum analysis, Optical testing, Tunable lasers, Receivers, Microwave radiation, Telecommunications

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