Prof. Junqiang Sun Profile

Prof. Junqiang Sun

at Huazhong Univ of Science and Technology

SPIE Involvement:

Author

Publications (67)

Proceedings Article | 27 December 2022 Presentation + Paper

Performance enhancement of distributed feedback laser with a partial grating

Wei Xu, Wei Hong, Haotian Shi, Junqiang Sun

Proceedings Volume 12311, 123110G (2022) https://doi.org/10.1117/12.2664345

KEYWORDS: Waveguides, Laser resonators, Reflection, Optical simulations, Transient nonlinear optics, Modulation, Coating, Active optics, Yield improvement, Reflectivity

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Proceedings Article | 26 January 2021 Paper

Enhanced forward stimulated Brillouin scattering in aluminum nitride slot waveguides with acoustic pumping

Linfeng Yu, Ming Cheng, Kang Wang, Junqiang Sun

Proceedings Volume 11767, 1176708 (2021) https://doi.org/10.1117/12.2592177

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Proceedings Article | 26 January 2021 Paper

Integrated optical filter consisting of micro-ring resonator embedded in Fabry-Perot cavity

Wenting Jiao, Junqiang Sun

Proceedings Volume 11767, 117671G (2021) https://doi.org/10.1117/12.2592271

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Proceedings Article | 26 January 2021 Paper

Uniaxially tensile strained Ge/SiGe coupled quantum wells

Yi Zhang, Junqiang Sun

Proceedings Volume 11767, 1176715 (2021) https://doi.org/10.1117/12.2592238

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Proceedings Article | 26 January 2021 Paper

Cascaded Brillouin lasing in a suspended silicon racetrack micro-ring pumped by external fiber loop

Kang Wang, Ming Cheng, Yi Zhang, Li Kai, Linfeng Yu, Junqiang Sun

Proceedings Volume 11767, 1176709 (2021) https://doi.org/10.1117/12.2592180

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Proceedings Article | 5 November 2020 Paper

Enhanced optomechanical interaction assisted by piezomechanics on the SOI platform

Ming Cheng, Kang Wang, Junqiang Sun

Proceedings Volume 11564, 1156408 (2020) https://doi.org/10.1117/12.2579787

KEYWORDS: Waveguides, Microwave radiation, Aluminum nitride, Silicon, Electrodes, Acoustics, Silicon photonics, Optical isolators, Transmitters

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Proceedings Article | 5 November 2020 Paper

Detection of Bragg wavelength shift with high resolution based on an Erbium-doped fiber Bragg grating

Li Kai, Junqiang Sun

Proceedings Volume 11569, 115690D (2020) https://doi.org/10.1117/12.2579975

KEYWORDS: Modulation, Fiber Bragg gratings, Single sideband modulation, Refractive index

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Proceedings Article | 14 March 2018 Presentation

Manipulation of microwave signals with photonic approaches (Conference Presentation)

Junqiang Sun

Proceedings Volume 10536, 105361A (2018) https://doi.org/10.1117/12.2289221

KEYWORDS: Microwave radiation, Modulation, Single sideband modulation, Phase shift keying, Optical filters, Nonlinear optics, Microwave photonics, Radar, Warfare, Tunable filters

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SPIE Journal Paper | 31 May 2017

Tunable multiwavelength SLM fiber laser based on Rayleigh and Brillouin scattering effects

Huang Xiong, Ruiwen Zhang, Guodong Chen, Junqiang Sun

OE, Vol. 56, Issue 05, 056113, (May 2017) https://doi.org/10.1117/12.10.1117/1.OE.56.5.056113

KEYWORDS: Fiber lasers, Laser scattering, Rayleigh scattering, Scattering, Spatial light modulators, Light scattering, Backscatter, Single mode fibers

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SPIE Journal Paper | 9 March 2017

Location optimization of remote gain unit in ultralong span repeaterless optical transmission system

Huang Xiong, Yuanyuan Shan, Junqiang Sun

OE, Vol. 56, Issue 03, 036106, (March 2017) https://doi.org/10.1117/12.10.1117/1.OE.56.3.036106

KEYWORDS: Wavelength division multiplexing, Raman spectroscopy, Transmittance, Optical amplifiers, Telecommunications, Sun, Receivers, Signal attenuation, Fiber amplifiers, Optical communications

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Proceedings Article | 27 February 2015 Paper

Mode conversion based on the acousto-optical interaction in photonic-phononic waveguide

Guodong Chen, Ruiwen Zhang, Xiong Huang, Heng Xie, Ya Gao, Danqi Feng, Junqiang Sun

Proceedings Volume 9367, 936712 (2015) https://doi.org/10.1117/12.2076505

KEYWORDS: Acoustics, Waveguides, Wave propagation, Silicon, Dispersion, Acousto-optics, Crystals, Terahertz radiation, Multiplexing, Refractive index

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Proceedings Article | 8 March 2014 Paper

Novel optical fiber ultrasonic sensor based on fiber laser

Qi Wu, Yoji Okabe, Junqiang Sun

Proceedings Volume 9062, 906209 (2014) https://doi.org/10.1117/12.2044553

KEYWORDS: Ultrasonics, Signal detection, Sensors, Fiber lasers, Ferroelectric materials, Laser systems engineering, Sensing systems, Structural health monitoring, Fiber Bragg gratings, Temperature metrology

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Proceedings Article | 15 October 2012 Paper

Large single-mode rib waveguide in lithium niobate on insulator

Yujie Zhou, Liqun Feng, Junqiang Sun

Proceedings Volume 8419, 84190Y (2012) https://doi.org/10.1117/12.975644

KEYWORDS: Waveguides, Light wave propagation, Single mode fibers, Lithium niobate, Beam propagation method, Wave propagation, Refractive index, Optoelectronics, Gaussian beams, Cladding

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SPIE Journal Paper | 1 October 2012

Arbitrary-waveform-decomposition technique applied to the Schrödinger equation

Liang Zhao, Junqiang Sun, Xinliang Zhang, Cong Chen

OE, Vol. 51, Issue 10, 105006, (October 2012) https://doi.org/10.1117/12.10.1117/1.OE.51.10.105006

KEYWORDS: Picosecond phenomena, Gaussian pulse, Signal attenuation, Optical engineering, Optical fibers, Dispersion, Telecommunications, Single mode fibers, Wave propagation, Signal processing

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Proceedings Article | 22 February 2012 Paper

200 GHz-spacing WDM transmission system employing ultrawideband optical signals

Jing Shao, Junqiang Sun

Proceedings Volume 8333, 833312 (2012) https://doi.org/10.1117/12.918999

KEYWORDS: Wavelength division multiplexing, Single mode fibers, Channel projecting optics, Signal processing, Radio optics, Telecommunications, Optoelectronics, Optical signal processing, Broadband telecommunications, Optical networks

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SPIE Journal Paper | 1 September 2010

Wavelength switchable single-longitudinal-mode fiber laser with two π phase-shifted chirped fiber Bragg grating as a narrow linewidth filter

Junqiang Sun, Jinlin Chen, Yanxia Huang, Hong Li, Chao Jiang

OE, Vol. 49, Issue 09, 091007, (September 2010) https://doi.org/10.1117/12.10.1117/1.3484947

KEYWORDS: Fiber lasers, Fiber Bragg gratings, Optical filters, Switches, Bandpass filters, Variable optical attenuators, Photodetectors, Optical engineering, Sun, Terahertz radiation

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Proceedings Article | 3 December 2009 Paper

Simultaneous demonstration on FWM-based all-optical 40 Gbit/s multicasting CSRZ-DPSK logic XOR gate and CSRZ-DPSK to RZ-DPSK format conversion

Jian Wang, Qizhen Sun, Junqiang Sun

Proceedings Volume 7631, 76310D (2009) https://doi.org/10.1117/12.853292

KEYWORDS: Logic, Phase shift keying, Nonlinear optics, Modulation, Four wave mixing, Signal processing, Fiber amplifiers, Optoelectronics, Optical signal processing, Tunable lasers

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SPIE Journal Paper | 1 October 2009

Wideband continuously tunable optical delay line based on wavelength conversion in reflective semiconductor optical amplifiers and fiber dispersion

Zhefeng Hu, Junqiang Sun

OE, Vol. 48, Issue 10, 105004, (October 2009) https://doi.org/10.1117/12.10.1117/1.3242827

KEYWORDS: Dispersion, Single mode fibers, Semiconductor optical amplifiers, Reflectivity, Eye, Optical engineering, Sun, Optical filters, Tunable filters, Fiber amplifiers

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SPIE Journal Paper | 1 August 2009

Research into the gain characteristics of the highly nonlinear fiber-based degeneration four-wave mixing in the presence of dispersion fluctuations

Liang Zhao, Junqiang Sun

OE, Vol. 48, Issue 08, 085001, (August 2009) https://doi.org/10.1117/12.10.1117/1.3194289

KEYWORDS: Nonlinear optics, Optical engineering, Sun, Four wave mixing, Fiber amplifiers, Optical amplifiers, Dispersion, Signal processing, Fiber optics, Detection theory

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Proceedings Article | 20 February 2009 Paper

Experimental investigation on simultaneous true demodulation of NRZ-DPSK signal and all-optical ODB-to-NRZ and AMI-to-RZ format conversions

Jian Wang, Junqiang Sun, Qizhen Sun, Xinliang Zhang, Dexiu Huang

Proceedings Volume 7279, 727904 (2009) https://doi.org/10.1117/12.811492

KEYWORDS: Demodulation, Waveguides, Second-harmonic generation, Phase shift keying, Optical amplifiers, Fiber amplifiers, Signal processing, Optoelectronics, Tunable lasers

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Proceedings Article | 18 November 2008 Paper

40 Gbit/s FSK all-optical wavelength conversion and NOT gate using periodically poled lithium niobate waveguides

Jian Wang, Junqiang Sun, Minghao Li, Xinliang Zhang, Dexiu Huang

Proceedings Volume 7135, 713527 (2008) https://doi.org/10.1117/12.804338

KEYWORDS: Frequency shift keying, Modulation, Waveguides, Logic, Second-harmonic generation, Lithium niobate, Phase shift keying, Optical networks, Fiber amplifiers

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Proceedings Article | 11 November 2008 Paper

A novel 80 km dispersion-compensation 8x100GHz comb-equalizer for fiber optical parametric amplifier

Hui Cao, Guojie Chen, Weicheng Chen, Junqiang Sun, Dexiu Huang

Proceedings Volume 7134, 71341T (2008) https://doi.org/10.1117/12.804327

KEYWORDS: Fiber amplifiers, Fiber optics, Optical amplifiers, Fiber Bragg gratings, Reflectivity, Inverse scattering, Optical filters, Solids, Optoelectronics, Wavelength division multiplexing

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Proceedings Article | 11 November 2008 Paper

Ultra-wideband pulse generation using turbo-switches

Weiwei Zhang, Junqiang Sun, Cheng Cheng, Xinliang Zhang, Dexiu Huang

Proceedings Volume 7134, 713410 (2008) https://doi.org/10.1117/12.804387

KEYWORDS: Modulation, Semiconductor optical amplifiers, Picosecond phenomena, Reflectivity, Imaging systems, Signal generators, Semiconductor lasers, Telecommunications, Wireless communications

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SPIE Journal Paper | 1 August 2008

Suppression of degenerate four-wave mixing in nondegenerate optical parametric amplifiers

Liang Zhao, Junqiang Sun

OE, Vol. 47, Issue 08, 085001, (August 2008) https://doi.org/10.1117/12.10.1117/1.2968253

KEYWORDS: Four wave mixing, Optical amplifiers, Fiber amplifiers, Optical engineering, Sun, Photons, Semiconductor optical amplifiers, Wave propagation, Nonlinear optics, Optoelectronics

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Proceedings Article | 14 January 2008 Paper

Experimental demonstration of widely tunable wavelength conversion between ps-pulses based on four-wave mixing in cascaded highly nonlinear fiber

Hui Cao, Junqiang Sun, Weicheng Chen, Dexiu Huang

Proceedings Volume 6781, 678103 (2008) https://doi.org/10.1117/12.741997

KEYWORDS: Continuous wave operation, Four wave mixing, Laser sources, Tunable lasers, Nonlinear optics, Optoelectronics, Picosecond phenomena, Dense wavelength division multiplexing, Optical networks, Data conversion

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Proceedings Article | 8 January 2008 Paper

All-optical tunable delay line based on wavelength conversion and fiber dispersion

Zhefeng Hu, Junqiang Sun, Lei Liu, Jian Wang

Proceedings Volume 6838, 68380N (2008) https://doi.org/10.1117/12.758527

KEYWORDS: Picosecond phenomena, Dispersion, Distortion, Phased array optics, Radio optics, Optical communications, Optical filters, Tunable filters, Semiconductor optical amplifiers, Electronic filtering

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SPIE Journal Paper | 1 December 2007 Open Access

All-optical single-to-dual channel non-return-to-zero to return-to-zero format converter using a periodically poled LiNbO₃ and a reflective semiconductor optical amplifier

Jian Wang, Junqiang Sun, Qizhen Sun, Dalin Wang, Minjuan Zhou, Xinliang Zhang, Dexiu Huang

OE, Vol. 46, Issue 12, 120501, (December 2007) https://doi.org/10.1117/12.10.1117/1.2823496

KEYWORDS: Optical clocks, Waveguides, Fiber lasers, Semiconductor optical amplifiers, Reflectivity, Clocks, Signal processing, Mode locking, Continuous wave operation

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Proceedings Article | 21 November 2007 Paper

Energy transmission and distribution of guided modes in parallel-plate waveguide coupler

Jing Liu, Junqiang Sun, Chong-qing Huang, Wenjing Hu

Proceedings Volume 6781, 67813R (2007) https://doi.org/10.1117/12.741962

KEYWORDS: Waveguides, Wave propagation, Dielectrics, Finite-difference time-domain method, Waveguide modes, Light, Coating, Refractive index, Optoelectronics, Numerical simulations

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Proceedings Article | 21 November 2007 Paper

Numerical study of all-optical delay line based on wavelength conversion in SOA and dispersion in DCF

Zhefeng Hu, Junqiang Sun, Jian Wang, Jing Xu

Proceedings Volume 6781, 67812O (2007) https://doi.org/10.1117/12.745684

KEYWORDS: Picosecond phenomena, Dispersion, Distortion, Optical communications, Control systems, Optical filters, Transparency, Eye, Semiconductor optical amplifiers, Phased array optics

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Proceedings Article | 19 November 2007 Paper

FDTD analysis of optical field distribution in waveguide grating coupler

Chongqing Huang, Jing Liu, Wenjing Hu, Junqiang Sun

Proceedings Volume 6783, 67834N (2007) https://doi.org/10.1117/12.742058

KEYWORDS: Waveguides, Finite-difference time-domain method, Integrated optics, Light sources, Optics manufacturing, Dielectrics, Chemical elements, Refractive index, Diffraction, Light

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Proceedings Article | 19 November 2007 Paper

All-optical ultrawideband monocycle and doublet generation using cascaded PPLN waveguides

Jian Wang, Junqiang Sun, Qizhen Sun

Proceedings Volume 6782, 678230 (2007) https://doi.org/10.1117/12.745306

KEYWORDS: Second-harmonic generation, Waveguides, Signal processing, Picosecond phenomena, Wave propagation, Optoelectronics, Wireless communications, Telecommunications, Sum-frequency generation, Data conversion

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Proceedings Article | 19 November 2007 Paper

Experimental demonstration of PPLN-based double ring fiber laser and its application to 40 Gb/s wavelength conversion

Jian Wang, Junqiang Sun, Qizhen Sun

Proceedings Volume 6782, 67821S (2007) https://doi.org/10.1117/12.745610

KEYWORDS: Fiber lasers, Continuous wave operation, Waveguides, Second-harmonic generation, Tunable filters, Optical amplifiers, Data conversion, Optoelectronics, Variable optical attenuators

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Proceedings Article | 19 November 2007 Paper

Fine-tuning of the spectral efficiency based on tunneling splitting in multiple quantum well system

Chongqing Huang, Junqiang Sun, Jing Liu, Wenjing Hu

Proceedings Volume 6782, 678227 (2007) https://doi.org/10.1117/12.742010

KEYWORDS: Quantum wells, Photonic crystals, Quantum efficiency, Optical communications, Dielectrics, Optoelectronics, Dense wavelength division multiplexing, Telecommunications, Physics, Optical testing

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SPIE Journal Paper | 1 November 2007

Analysis on the definition of polarization-dependent loss

Panfeng Ding, Jiaxian Wang, Qiren Zhuang, Junqiang Sun, Rui Hou

OE, Vol. 46, Issue 11, 115009, (November 2007) https://doi.org/10.1117/12.10.1117/1.2802551

KEYWORDS: Polarization, Optical components, Optical engineering, Optoelectronics, Birefringence, Information science, Sun, Optical instrument design, Instrumentation engineering, Computer science

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SPIE Journal Paper | 1 August 2007

Waveform distortion of wavelength conversion based on a periodically poled lithium niobate waveguide at a pulsed pump

Chuanhong Luo, Junqiang Sun, Jing Liu, Jun Chen

OE, Vol. 46, Issue 08, 085003, (August 2007) https://doi.org/10.1117/12.10.1117/1.2771124

KEYWORDS: Waveguides, Second-harmonic generation, Distortion, Wave propagation, Picosecond phenomena, Optical engineering, Lithium niobate, Continuous wave operation, Numerical simulations

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SPIE Journal Paper | 1 July 2007

Single-longitudinal-mode fiber ring laser using internal lasing injection and self-injection feedback

Junqiang Sun, Lin Huang

OE, Vol. 46, Issue 07, 074201, (July 2007) https://doi.org/10.1117/12.10.1117/1.2757157

KEYWORDS: Fiber lasers, Spatial light modulators, Feedback loops, Polarization, Bandpass filters, Optical filters, Fiber Bragg gratings, Optical engineering, Sun, Electronic filtering

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SPIE Journal Paper | 1 May 2007

Polarization-mode dispersion influenced by polarization-dependent loss and chirp for a Gaussian pulse

Pan-feng Ding, Junqiang Sun, Rui Hou

OE, Vol. 46, Issue 05, 055002, (May 2007) https://doi.org/10.1117/12.10.1117/1.2740769

KEYWORDS: Gaussian pulse, Polarization, Optical fibers, Optical engineering, Sun, Optoelectronics, Picosecond phenomena, Computer science, Single mode fibers, Telecommunications

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SPIE Journal Paper | 1 February 2007

Observation of 40-Gbit/s tunable wavelength down- and up-conversions based on cascaded second-order nonlinearity in LiNbO₃ waveguides

Jian Wang, Junqiang Sun

OE, Vol. 46, Issue 02, 025005, (February 2007) https://doi.org/10.1117/12.10.1117/1.2672105

KEYWORDS: Waveguides, Signal processing, Optical amplifiers, Tunable filters, Optical engineering, Sun, Dense wavelength division multiplexing, Upconversion, Nonlinear optics

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SPIE Journal Paper | 1 January 2007

Stable multiwavelength erbium-doped fiber ring laser using self-lasing feedback

Junqiang Sun

OE, Vol. 46, Issue 01, 014203, (January 2007) https://doi.org/10.1117/12.10.1117/1.2424922

KEYWORDS: Fiber lasers, Modulators, Optical filters, Modulation, Polarization, Phase shift keying, Mirrors, Laser resonators, Fiber couplers, Optical engineering

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SPIE Journal Paper | 1 November 2006

Impact of optical cross-connect architecture on the accumulation of intraband crosstalk in wavelength division multiplexing optical networks

Aihong Guan, Junqiang Sun

OE, Vol. 45, Issue 11, 115008, (November 2006) https://doi.org/10.1117/12.10.1117/1.2390683

KEYWORDS: Multiplexers, Network architectures, Wavelength division multiplexing, Optical networks, Optical engineering, Sun, Numerical simulations, Wavelength division multiplexing networks, Optical fibers, Switches

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Proceedings Article | 10 June 2006 Paper

Theoretical analysis of general approach realizing phase matched second-harmonic generation in LiNbO₃ waveguides

Jian Wang, Junqiang Sun

Proceedings Volume 6344, 63441E (2006) https://doi.org/10.1117/12.694405

KEYWORDS: Second-harmonic generation, Waveguides, Modulation, Tolerancing, Wave propagation, Phase shift keying, Nonlinear optics, Sun, Optoelectronics, Phase matching

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Proceedings Article | 10 June 2006 Paper

40Gbit/s all-optical tunable format conversion in LiNbO₃ waveguides based on cascaded SHG+DFG interactions

Jian Wang, Junqiang Sun

Proceedings Volume 6344, 634407 (2006) https://doi.org/10.1117/12.693588

KEYWORDS: Waveguides, Phase shifts, Nonlinear optics, Second-harmonic generation, Wave propagation, Computer simulations, Ultrafast phenomena, Solids, Mirrors, Optical clocks

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Proceedings Article | 10 June 2006 Paper

Experimental demonstration of novel cascaded SFG+DFG wavelength conversion of picosecond pulses in LiNbO₃ waveguides

Jian Wang, Junqiang Sun, Chuanhong Luo

Proceedings Volume 6344, 63441D (2006) https://doi.org/10.1117/12.694298

KEYWORDS: Waveguides, Picosecond phenomena, Second-harmonic generation, Sum-frequency generation, Data conversion, Signal attenuation, Mode locking, Polarization, Nonlinear optics, Frequency conversion

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Proceedings Article | 9 June 2006 Paper

Bicubic uniform B-spline wavefront fitting technology applied in computer-generated holograms

Hui Cao, Jun-qiang Sun, Guo-jie Chen

Proceedings Volume 6149, 61491A (2006) https://doi.org/10.1117/12.674234

KEYWORDS: Wavefronts, Computer generated holography, Holograms, Heads up displays, Optical signal processing, Zernike polynomials, Diffraction gratings, Mirrors, Optical components, Computer programming

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SPIE Journal Paper | 1 June 2006

Performance analysis of differential output ports choosing probabilities for multiclass traffic in optical burst switching networks

Rui Hou, Junqiang Sun, Pan-feng Ding, Chunyong Yang

OE, Vol. 45, Issue 06, 065003, (June 2006) https://doi.org/10.1117/12.10.1117/1.2211640

KEYWORDS: Switching, Optical networks, Systems modeling, Optical engineering, Process modeling, Wavelength division multiplexing, Network architectures, Computer science, Sun, Optoelectronics

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Proceedings Article | 28 January 2006 Paper

All-optical 40Gbit/s format conversion from NRZ to RZ based on SFG in a PPLN waveguide

Jian Wang, Junqiang Sun

Proceedings Volume 6025, 60250T (2006) https://doi.org/10.1117/12.667020

KEYWORDS: Signal processing, Data conversion, Waveguides, Signal attenuation, Phase shifts, Nonlinear optics, Interferometers, Sum-frequency generation, Wavelength division multiplexing, Mach-Zehnder interferometers

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Proceedings Article | 9 December 2005 Paper

NOLM-based all-optical 40 Gbit/s format conversion through sum-frequency generation (SFG) in a PPLN waveguide

Jian Wang, Junqiang Sun

Proceedings Volume 6021, 60212H (2005) https://doi.org/10.1117/12.633439

KEYWORDS: Signal processing, Waveguides, Phase shifts, Nonlinear optics, Signal attenuation, Picosecond phenomena, Sum-frequency generation, Sun, Mirrors, Signal analyzers

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Proceedings Article | 9 December 2005 Paper

Broadband tunable all-optical 40 Gbit/s NRZ-to-RZ format conversion exploiting SHG+DFG in LiNbO₃ waveguides in a MZI configuration

Jian Wang, Junqiang Sun

Proceedings Volume 6021, 602129 (2005) https://doi.org/10.1117/12.635676

KEYWORDS: Second-harmonic generation, Phase shifts, Waveguides, Nonlinear optics, Signal processing, Data conversion, Lithium niobate, Switching, Sun, Signal analyzers

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Proceedings Article | 9 December 2005 Paper

Stochastic analysis on PMD statistical model

Panfeng Ding, Junqiang Sun, Rui Hou

Proceedings Volume 6021, 602125 (2005) https://doi.org/10.1117/12.629408

KEYWORDS: Statistical analysis, Stochastic processes, Analytical research, Polarization, Mathematical modeling, Birefringence, Iterative methods, Computer simulations, Single mode fibers, Physics

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Proceedings Article | 8 December 2005 Paper

Experimental study on intraband crosstalk in the DB and GMDB network

Aihong Guan, Junqiang Sun

Proceedings Volume 6021, 60210C (2005) https://doi.org/10.1117/12.634452

KEYWORDS: Signal to noise ratio, Switching, Networks, Switches, Network architectures, Interference (communication), Eye, Multiplexers, Optical networks, Optical switching

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Proceedings Article | 6 December 2005 Paper

Wavelength tunable picosecond pulse generation at 10-80GHz repetition rates with semiconductor fiber ring laser

Xu Fan, Xinliang Zhang, Hairong Liu, Junqiang Sun, Deming Liu, Dexiu Huang

Proceedings Volume 6020, 60200X (2005) https://doi.org/10.1117/12.635733

KEYWORDS: Mode locking, Fiber lasers, Semiconductor lasers, Picosecond phenomena, Semiconductors, Reflectivity, Signal attenuation, Modulation, Pulsed laser operation, Tunable lasers

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Proceedings Article | 6 December 2005 Paper

Study of fair burst dropping approach in optical burst switching multi-hop network

Rui Hou, Jun-qiang Sun, Pan-feng Ding

Proceedings Volume 6022, 602233 (2005) https://doi.org/10.1117/12.627912

KEYWORDS: Switching, Chromium, Wavelength division multiplexing, Optical networks, Composites, Head, Data transmission, Coherence (optics), Network architectures, Sun

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Proceedings Article | 3 December 2005 Paper

Unique dispersion effects on transmitting and amplifying of picosecond pulses in fiber optical parametric amplifiers

Hui Cao, Junqiang Sun, Deixiu Huang

Proceedings Volume 6019, 601931 (2005) https://doi.org/10.1117/12.633564

KEYWORDS: Picosecond phenomena, Dispersion, Fiber optics, Fiber amplifiers, Optical amplifiers, Artificial intelligence, Signal processing, Solids, Four wave mixing, Continuous wave operation

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Proceedings Article | 3 December 2005 Paper

Theoretical study on the signal pulse splitting phenomenon in continuous wave pumped fiber optical parametric amplifier

Hui Cao, Junqiang Sun, Deixiu Huang

Proceedings Volume 6019, 601930 (2005) https://doi.org/10.1117/12.633558

KEYWORDS: Fiber amplifiers, Optical amplifiers, Fiber optics, Artificial intelligence, Picosecond phenomena, Signal processing, Four wave mixing, Gaussian pulse, Numerical simulations, Nonlinear optics

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Proceedings Article | 31 January 2005 Paper

Experimental and theoretical investigation on tunable FWM wavelength conversion based on SOA-fiber ring laser

Xinliang Zhang, Junqiang Sun, Deming Liu, Dexiu Huang

Proceedings Volume 5624, (2005) https://doi.org/10.1117/12.577234

KEYWORDS: Optical amplifiers, Fiber lasers, Tunable lasers, Signal processing, Bandpass filters, Semiconductor lasers, Fiber amplifiers, Polarization, Four wave mixing, Semiconductor optical amplifiers

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Proceedings Article | 31 January 2005 Paper

Theoretical and experimental investigation on all-optical AND gate with cascaded single-port-coupled SOAs

Xinliang Zhang, Junqiang Sun, Deming Liu, Dexiu Huang

Proceedings Volume 5624, (2005) https://doi.org/10.1117/12.577223

KEYWORDS: Logic, Signal attenuation, Modulation, Channel projecting optics, Numerical simulations, Logic devices, Semiconductor optical amplifiers, Computer simulations, All optical signal processing, Reflectivity

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Proceedings Article | 10 January 2005 Paper

Synthesis of superstructure fiber Bragg grating comb filter by ameliorated layer-peeling algorithm

Hui Cao, Junqiang Sun, Guojie Chen, Weicheng Chen, Dexiu Huang

Proceedings Volume 5623, (2005) https://doi.org/10.1117/12.574090

KEYWORDS: Reflectivity, Linear filtering, Fiber Bragg gratings, Digital Light Processing, Optical design, Solids, Modulation, Sun, Optical filters, Structured optical fibers

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Proceedings Article | 10 January 2005 Paper

On design of a novel dispersionless comb gain equalizer for fiber optical parametric amplifier

Hui Cao, Junqiang Sun, Guojie Chen, Weicheng Chen, Dexiu Huang

Proceedings Volume 5623, (2005) https://doi.org/10.1117/12.574049

KEYWORDS: Reflectivity, Optical amplifiers, Fiber amplifiers, Fiber optics, Fiber Bragg gratings, Linear filtering, Optical filters, Wavelength division multiplexing, Inverse scattering, Optical design

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A novel superstructure fiber Bragg grating (SFBG) based comb gain equalizer for fiber optical parametric amplifier (OPA) is proposed. This gain equalizer is characterized by its comb reflectivity spectrum. It can have two functions at least, one is flattening the gain in multi ITU-T regulated channels, the other is it can be used as multi-channel isolation filters taking full advantage of its comb reflectivity spectrum. In addition it can be dispersionless or have dispersion compensation function. A one-bump fiber OPA, 30dB bandwidth >15nm, is designed with one of its peak gains (41dB) located at the center of work wavelengths in a 16-channel 100GHz spaced WDM optical transmission system according to corresponding Chinese criterion (1548.51nm~ 1560.61nm). The object reflectivity spectra of gain equalizer are calculated in two parts independently. Inner channel part for every channel is designed according to the gain spectrum of fiber OPA. As a comb filter, its inter-channel part reflectivities are the smaller the better. But inter-channel part reflectivities can not be simply zeroed, for which would result in the rising and descending edges of reflectivity spectrum being too sharp to be performed by any filter. To split the difference, inter-channel part reflectivities are calculated with Gaussian hypergeometric function (-0.5dB bandwidth 0.1nm, -45dB bandwidth 0.3nm) to obtain slower rising and descending edges than the simply zeroed case, which is very necessary and important to be sure the object reflectivity spectrum not only has sharp enough edges to take the shape of comb but also is physically realizable. Adopting channel-by-channel windowing method to apodize the object reflectivity spectrum, a superstructure fiber Bragg grating is designed with lay-peeling inverse scattering technique. At last, according to the coupling coefficient calculated, reflection spectrum and group time delay are analyzed based on the method of transformation matrix. Calculation results show that this SFBG satisfies all requirements. Further calculation results show that, using this SFBG as comb gain equalizer, the gain of fiber OPA is flattened in every channel to within ±0.4dB among 16 channels, with channel isolation high up to -35dB. It needs to point out that this method can also be used to design gain equalizer for other optical amplifiers.

Proceedings Article | 12 May 2004 Paper

Tunable and self-probed wavelength conversion in SOA-based fiber ring laser

Xinliang Zhang, Fan Xu, Junqiang Sun, Deming Liu, Dexiu Huang

Proceedings Volume 5280, (2004) https://doi.org/10.1117/12.520641

KEYWORDS: Fiber lasers, Tunable lasers, Modulation, Semiconductor lasers, Bandpass filters, Laser damage threshold, Tunable filters, Optical networks, Fiber amplifiers, Semiconductors

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Proceedings Article | 12 May 2004 Paper

Analytical expressions for saturated signal gain and output power of fiber optical parametric amplifiers

Cao Hui, Junqiang Sun, Guojie Chen, Dexiu Huang

Proceedings Volume 5280, (2004) https://doi.org/10.1117/12.521631

KEYWORDS: Fiber amplifiers, Optical amplifiers, Fiber optics, Nonlinear optics, Numerical integration, Picosecond phenomena, Signal analyzers, Optoelectronics, Physics, Numerical analysis

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Proceedings Article | 12 May 2004 Paper

Additional spectral broadening of ultrashort optical pulse due to birefringence in semiconductor optical amplifiers

Lirong Huang, Dexiu Huang, Deming Liu, Junqiang Sun

Proceedings Volume 5280, (2004) https://doi.org/10.1117/12.521696

KEYWORDS: Birefringence, Polarization, Phase modulation, Semiconductor optical amplifiers, Refractive index, Waveguides, Fourier transforms, Modulation, Phase shifts, Reflectivity

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Proceedings Article | 12 May 2004 Paper

Simultaneous 16-channel wavelength conversion at 10 Gb/s based on cross-gain modulation of ASE spectrum in SOA

Xinliang Zhang, Dexiu Huang, Junqiang Sun, Deming Liu

Proceedings Volume 5280, (2004) https://doi.org/10.1117/12.520178

KEYWORDS: Modulation, Demultiplexers, Optical amplifiers, Semiconductor optical amplifiers, Reflectivity, Dense wavelength division multiplexing, Laser beam diagnostics, Polarization, Sun

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Proceedings Article | 29 August 2002 Paper

Numerical simulation of recovery enhancement by a cw pump light in semiconductor optical amplifiers (SOAs)

Wei Hong, Dexiu Huang, Junqiang Sun, Deming Liu

Proceedings Volume 4905, (2002) https://doi.org/10.1117/12.480972

KEYWORDS: Transparency, Semiconductor optical amplifiers, Switches, Active optics, Numerical simulations, Optoelectronics, Visualization, Picosecond phenomena, Semiconductor lasers

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Proceedings Article | 23 August 2002 Paper

Window properties of SOALOM by numerical simulation

Wei Hong, Dexiu Huang, Junqiang Sun, Deming Liu

Proceedings Volume 4906, (2002) https://doi.org/10.1117/12.480545

KEYWORDS: Switching, Mirrors, Gaussian pulse, Semiconductor optical amplifiers, Optical amplifiers, Picosecond phenomena, Numerical simulations, Semiconductor lasers, Optoelectronics

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Proceedings Article | 20 April 2001 Paper

Development of key devices used in optical cross-connects

Wei Gong, YanFeng Fu, Guang Xie, Junqiang Sun

Proceedings Volume 4289, (2001) https://doi.org/10.1117/12.424828

KEYWORDS: Optical switching, Optical arrays, Switches, Signal attenuation, Signal detection, Dense wavelength division multiplexing, Semiconductor optical amplifiers, Telecommunications, Modulation, Waveguides

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Proceedings Article | 11 July 2000 Paper

Performance improvement in XGM wavelength conversion exploiting SLAOLM

XinLiang Zhang, Dexiu Huang, Junqiang Sun, Deming Liu, Heqing Yi

Proceedings Volume 4078, (2000) https://doi.org/10.1117/12.392160

KEYWORDS: Signal attenuation, Phase modulation, Signal to noise ratio, Mirrors, Directional couplers, Transparency, Telecommunications, Modulation, Refractive index, Multiplexing

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Proceedings Article | 30 September 1996 Paper

Low pump power, passively Q-switched erbium-doped fiber laser

Zhijian Huang, Junqiang Sun, Dexiu Huang

Proceedings Volume 2889, (1996) https://doi.org/10.1117/12.253261

KEYWORDS: Fiber lasers, Q switched lasers, Waveguides, Mirrors, Optical fibers, Semiconductors, Semiconductor lasers, Laser damage threshold, Q switching, Continuous wave operation

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