Dr. Jiagui Wu Profile

Dr. Jiagui Wu

Visiting Scholar, UCLA/Professor, Southwest Univ. at Southwest Univ

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Author

Publications (22)

Proceedings Article | 23 November 2024 Poster + Paper

Generation of cylindrical vector vortex beams for self-assembly of chiral nanostructures of AuNPs

Jin Deng, Yunpeng Ma, Lehan Zhao, Zihan Shen, Haitang Li, Shujun Zhen, Chengzhi Huang, Junbo Yang, Jiagui Wu

Proceedings Volume 13240, 132402A (2024) https://doi.org/10.1117/12.3036431

KEYWORDS: Polarization, Nanostructures, Gold nanoparticles, Photons, Angular momentum, Spatial light modulators, Phase distribution, Laser nanostructuring, Scanning electron microscopy, Materials properties

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Proceedings Article | 21 December 2023 Paper

An integrated photonics reservoir computing using chaotic semiconductor laser hybrid with Si3N4 micro-resonator

Lehan Zhao, Yuanyun Wang, Qingsong Bai, Jin Deng, Zihan Shen, Haitang Li, Guangqiong Xia, Zhengmao Wu, Junbo Yang, Jiagui Wu

Proceedings Volume 12966, 1296625 (2023) https://doi.org/10.1117/12.3007891

KEYWORDS: Microresonators, Chaos, Semiconductor lasers, Silicon, Reservoir computing, Laser frequency, Integrated photonics, Feedback loops, Computing systems, Beam path

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Proceedings Article | 21 December 2023 Paper

Non-volatile and ultra-fast photonic vector accelerator with optical phase change materials and integrated microcomb

Yuanyun Wang, Lehan Zhao, Qingsong Bai, Jin Deng, Zihan Shen, Haitang Li, Zhengmao Wu, Jiagui Wu, Guangqiong Xia

Proceedings Volume 12966, 1296623 (2023) https://doi.org/10.1117/12.3007875

KEYWORDS: Convolution, Integrated optics, Ultrafast phenomena, Neural networks, Modulation, Power consumption, Microrings, Matrices, Image processing, Single mode fibers

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Proceedings Article | 28 November 2023 Paper

A wavelength tunable and integrated ultra-narrow linewidth DBR semiconductor lasers

Yilu Wu, Xin Zhang, Qingsong Bai, Yuqi Hu, Wei Xiong, Guangqiong Xia, Dan Lu, Zhengmao Wu, Jiagui Wu

Proceedings Volume 12764, 1276404 (2023) https://doi.org/10.1117/12.2688968

KEYWORDS: Semiconductor lasers, Tunable lasers, Silicon, Silicon nitride, Microresonators, Microrings, Distributed feedback semiconductor lasers, Spectrum analysis, Waveguides, Thermal stability

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Proceedings Article | 28 November 2023 Paper

High-power and narrow-linewidth semiconductor laser with silicon nitride microring

Xin Zhang, Yilu Wu, Qingsong Bai, Yuqi Hu, Wei Xiong, Zhengmao Wu, Dan Lu, Jiagui Wu, Guangqiong Xia

Proceedings Volume 12764, 1276405 (2023) https://doi.org/10.1117/12.2688993

KEYWORDS: Microrings, High power lasers, Silicon nitride, Semiconductor lasers, Waveguides, Laser scattering, Distributed feedback semiconductor lasers, Silicon, Red lasers, Physical coherence

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Proceedings Article | 27 November 2023 Poster + Paper

Generation of parallel pulsed chaos based on Si3N4 microresonator and its application in imaging

Wei Xiong, Yuqi Hu, Qingsong Bai, Xin Zhang, Yilu Wu, Guangqiong Xia, Heng Zhou, Jiagui Wu, Zhengmao Wu

Proceedings Volume 12771, 127711U (2023) https://doi.org/10.1117/12.2688995

KEYWORDS: Chaos, Microresonators, Bragg cells, Silicon, LIDAR, Pulse signals, Optical amplifiers, Modulation, Signal generators, Signal detection

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Proceedings Article | 24 November 2021 Paper

Ultra-compact programmable arbitrary power splitter

Huan Yuan, Zehao Wang, Jinping Zhang, Xinpeng Jiang, Yang Deng, Jiagui Wu, Junbo Yang

Proceedings Volume 12062, 1206207 (2021) https://doi.org/10.1117/12.2601469

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Silicon photonics is becoming the leading technology in photonics for a variety of new applications. However, due to the large volume and high cost of traditional optical devices, they are not suitable for high integration. It is challenging to further improve the integration and performance of silicon photonics. Here, we proposed a power splitter designed by inverse design algorithm has high transmission efficiency and compact structure size, which is helpful to the integration of photonic integrated circuit (PIC). The emergence of inverse design algorithm makes a great breakthrough in the problems existing in optical devices. In recent years, inverse design algorithms have attracted researchers' attention because of their ability to regulate light transmission by changing the refractive index distribution in the subwavelength structure. Direct-binary-search (DBS) algorithm, as the most commonly used inverse design algorithm, is applied to the design of on-chip photonic devices because of its simple working principle and high optimization efficiency. As one of the important components of photonic integrated circuits, on-chip power splitter plays an important role in optical communication system. Power splitters which can achieve any power ratio are widely used in optical interconnect devices. The traditional arbitrary power splitter can achieve different split ratios through different structures, but they can not achieve controllable split ratios in the same device, which is an obstacle to the integration of PIC. Phase change materials have been widely used in controllable photonic devices due to their unique optical properties. We combined the DBS algorithm to program and control the Ge₂Sb₂Se₄Te₁ (GSST), divided the whole device into multiple units, and optimized the design of each unit. Finally, the phase distribution in line with the target splitting ratio was obtained, and the high-efficiency and small-size power distributor was realized. A 3D finite-difference time-domain (FDTD) solution was used to simulate the device, and the TE₀ mode light from the input waveguide was transmitted through the coupling region to the upper and lower output waveguides. Simulation results show that the device size is only 2.4 × 2.4 um², and in the wavelength range of 1530 nm-1560 nm, the power split ratio of 1:1.5 and 1:2.5 is achieved. This method is helpful for the development of programmable integrated photonic interconnect devices.

Proceedings Article | 5 March 2021 Presentation

Nonlinear dispersive dynamics in dissipative laser frequency microcombs

Abhinav Vinod, Futai Hu, Wenting Wang, Hao Liu, Jiagui Wu, James McMillan, Jinghui Yang, Chee-Wei Wong

Proceedings Volume 11671, 116710B (2021) https://doi.org/10.1117/12.2579195

KEYWORDS: Physics, Resonators, Nonlinear dynamics, Mathematics

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Proceedings Article | 2 December 2020 Paper

Design of multiwavelength confocal plane multifocal metalens based on CGH in visible band

Jinping Zhang, Biqiao Huang, Huan Yuan, Zehao Wang, Yang Deng, Jiagui Wu, Junbo Yang

Proceedings Volume 11717, 1171718 (2020) https://doi.org/10.1117/12.2586471

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SPIE Journal Paper | 21 October 2020 Open Access

Extreme events in quantum cascade lasers

Olivier Spitz, Jiagui Wu, Andreas Herdt, Grégory Maisons, Mathieu Carras, Wolfgang Elsäßer, Chee-Wei Wong, Frédéric Grillot

AP, Vol. 2, Issue 06, 066001, (October 2020) https://doi.org/10.1117/12.10.1117/1.AP.2.6.066001

KEYWORDS: Quantum cascade lasers, Modulation, Semiconductor lasers, Neurons, Photonics, Vertical cavity surface emitting lasers, Mid-IR, Chaos, Superposition, Laser damage threshold

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Proceedings Article | 10 March 2020 Presentation

Ultrafast mode-locked frequency microcombs: fundamentals and precision metrology (Conference Presentation)

Chee Wei Wong, Wenting Wang, Jinghui Yang, Shu-Wei Huang, Baicheng Yao, Abhinav Kumar Vinod, Hao Liu, James McMillan, Xinghe Jiang, Jiagui Wu, Yoon-Soo Jang

Proceedings Volume 11278, 1127817 (2020) https://doi.org/10.1117/12.2540995

KEYWORDS: Mode locking, Ultrafast phenomena, Ultrafast measurement systems, Metrology, Frequency combs, Microresonators, Interferometry, Solitons, Optoelectronics, Precision measurement

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Proceedings Article | 9 March 2020 Presentation

Dynamical chaos in silicon micro-cavity optomechanics for physically-enhanced information processing (Conference Presentation)

Jia-Gui Wu

Proceedings Volume 11274, 1127410 (2020) https://doi.org/10.1117/12.2542504

KEYWORDS: Chaos, Silicon, Optomechanical design, Data processing, Telecommunications, Cryptography, Information security, Optical fibers, Optical networks, Integrated optics

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Proceedings Article | 3 February 2020 Presentation + Paper

Peculiarities and predictions of rogue waves in mid-infrared quantum cascade lasers under conventional optical feedback

O. Spitz, A. Herdt, J. Wu, G. Maisons, M. Carras, C.-W. Wong, W. Elsäßer, F. Grillot

Proceedings Volume 11288, 112880A (2020) https://doi.org/10.1117/12.2545217

KEYWORDS: Quantum cascade lasers, Semiconductor lasers, Mid-IR, Laser optics, Nonlinear optics, Free space optics, Telecommunications

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Proceedings Article | 26 January 2018 Presentation + Paper

Temperature dependence of a mid-infrared quantum cascade laser with external optical feedback

O. Spitz, J. Wu, S. Khanal, M. Carras, B. Williams, C. W. Wong, F. Grillot

Proceedings Volume 10540, 105401N (2018) https://doi.org/10.1117/12.2290117

KEYWORDS: Quantum cascade lasers, Mid-IR, Semiconductor lasers, Free space optics, Laser optics, Laser stabilization, Atmospheric optics

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Proceedings Article | 29 November 2012 Paper

Time delay signatures of chaotic output in 1550nm VCSELs with double variable-polarization optical feedback

Ping Xiao, Zheng-Mao Wu, Jia-Gui Wu, Long Jiang, Guang-Qiong Xia

Proceedings Volume 8552, 85520G (2012) https://doi.org/10.1117/12.981966

KEYWORDS: Vertical cavity surface emitting lasers, Polarizers, Chaos, Complex systems, Stereolithography, Platinum, Optical communications, Singular optics, Beam splitters, Solids

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Proceedings Article | 29 November 2012 Paper

0.5Gbits/s message bidirectional encryption and decryption based on two synchronized chaotic semiconductor lasers

Jia-Gui Wu, Zheng-Mao Wu, Tao Deng, Xi Tang, Li Fan, Yi-Yuan Xie, Guang-Qiong Xia

Proceedings Volume 8552, 85520N (2012) https://doi.org/10.1117/12.999398

KEYWORDS: Chaos, Telecommunications, Laser sintering, Aluminum, Semiconductor lasers, Single mode fibers, Eye, Fiber lasers, Cryptography, Optical fibers

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Proceedings Article | 13 November 2010 Paper

Suppression of time delay signatures of chaotic output in mutually delay-coupled semiconductor lasers

Jia-Gui Wu, Zheng-Mao Wu, Jin-Ting Shen, Ling Ding, Neng-Yao Li, Guang-Qiong Xia

Proceedings Volume 7844, 78440E (2010) https://doi.org/10.1117/12.869959

KEYWORDS: Stereolithography, Semiconductor lasers, Platinum, Chaos, Laser systems engineering, Spectrum analysis, Optical isolators, Polarization, Signal detection, Radio optics

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Proceedings Article | 11 November 2008 Paper

A new type of mode power characteristics of extremely short external cavity semiconductor laser

Jia-Gui Wu, Zheng-Mao Wu, Guang-Qiong Xia, Xiao-Dong Lin, Tao Deng

Proceedings Volume 7134, 71340Z (2008) https://doi.org/10.1117/12.803069

KEYWORDS: Semiconductor lasers, Sensors, Head, Mirrors, Physics, Electronic filtering, Multimode fibers, Spectrum analysis, Microelectromechanical systems, Reflectors

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Proceedings Article | 7 January 2008 Paper

Influence of the light injection on the chaotic carrier fundamental frequency of the VCSELs with optical feedback

Shengfang Liu, Guangqiong Xia, Xi Tang, Yan Fan, Zhaoyun Li, Zhengmao Wu

Proceedings Volume 6824, 682410 (2008) https://doi.org/10.1117/12.753846

KEYWORDS: Vertical cavity surface emitting lasers, Semiconductor lasers, Chaos, Telecommunications, Modulation, Mirrors, Laser optics, Optical isolators, Attenuators, Beam splitters

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Proceedings Article | 19 November 2007 Paper

The cavity enhancing effect of F-P cavity mode on the non-degenerated four-wave mixing in distributed-feedback semiconductor laser diodes

Jiagui Wu, Guangqiong Xia, Xinhong Jia, Xiaojuan Yan, Jun Li, Xiaofa Wang, Zhengmao Wu

Proceedings Volume 6782, 678235 (2007) https://doi.org/10.1117/12.742036

KEYWORDS: Four wave mixing, Semiconductor lasers, Diodes, Terahertz radiation, Signal to noise ratio, Nonlinear dynamics, Physics, Optical networks, Transparency, Interference (communication)

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Proceedings Article | 19 November 2007 Paper

λ/4 phase-shifted distributed feedback lasers with chirped grating: dynamic single-mode and modulation characteristics analyses

Xin-Hong Jia, Zheng-Mao Wu, Guang-Qiong Xia, Dong-Zhou Zhong, Fei Wang, Jia-Gui Wu, Hai-Tao Chen

Proceedings Volume 6782, 678217 (2007) https://doi.org/10.1117/12.739673

KEYWORDS: Modulation, Phase shift keying, Refractive index, Transparency, Laser marking, Semiconductor lasers, Distributed feedback laser diodes, Numerical simulations, Signal attenuation, Physics

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Proceedings Article | 19 November 2007 Paper

Theoretical model and simulation of the extremely short external cavity semiconductor laser

Guangqiong Xia, Zhengmao Wu, Jiagui Wu, Zhaoyun Li, Qi Yang, Bingxing Yang

Proceedings Volume 6782, 67821G (2007) https://doi.org/10.1117/12.736619

KEYWORDS: Semiconductor lasers, Mirrors, Ray tracing, Optical simulations, Reflectivity, Modulation, Electronic filtering, Composites, Refractive index, Lithium

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Showing 5 of 22 publications

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