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Asia communications and Photonics Conference and Exhibition (ACP)

作者： Jianyao Zhang Yixiao Zhu Xiansong Fang Yimin Hu Yikun Zhang Fan Zhang Weisheng Hu State Key Laboratory of Advanced Optical Communication System and Networks Shanghai Jiao Tong University Shanghai China State Key Laboratory of Advanced Optical Communication System and Networks Peking University Beijing China Pengcheng Laboratory Shenzhen China

We experimentally demonstrate a dispersion-diverse receiver to mitigate the CD-induced power fading for IM-DD systems at C-band. The receiver can support 256.5 Gb/s line-rate PS-64-QAM signal transmission over 10-km S... 详细信息

ISBN: (数字)9798350379266

ISBN: (纸本)9798350379273

关键词： Fading channels C-band Prevention and mitigation Asia Modulation Receivers Bandwidth optical fiber communication Dispersion Photonics

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Broadband Arbitrary Coupler Based on Asymmetric Mach-Zehnder Interferometers with Bezier Curves

Broadband Arbitrary Coupler Based on Asymmetric Mach-Zehnder...

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2023 Asia communications and Photonics Conference/2023 International Photonics and Optoelectronics Meetings, ACP/POEM 2023

作者： Chen, Jiaqi Liu, Yuanbin Ni, Ziheng Lu, Liangjun Chen, Jianping Zhou, Linjie Shanghai Jiao Tong University State Key Laboratory of Advanced Optical Communication Systems and Networks Department of Electronic Engineering Shanghai China

We propose a broadband coupler based on cascaded Mach-Zehnder interferometers with Bezier curves on the silicon nitride platform, which has a wide operation wavelength range of 110 nm and good width/thickness fabricat... 详细信息

ISBN: (纸本)9798350312614

关键词： Bezier curve broadband coupler silicon nitride

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Low Latency Fiber communication system Equalizer Based on Photonic Reservoir Computing

Low Latency Fiber Communication System Equalizer Based on Ph...

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2023 Asia communications and Photonics Conference/2023 International Photonics and Optoelectronics Meetings, ACP/POEM 2023

作者： Zuo, Xiaoyan Pei, Li Bai, Bing Bai, Bowen Wang, Jianshuai Sui, Juan Institute of Lightwave Technology Beijing Jiaotong University Key Laboratory of All-Optical Networks and Modern Communication Networks of Ministry of Education Beijing China School of Electronics Peking University State Key Laboratory of Advanced Optical Communications System and Networks Beijing China Technology Co. Ltd Beijing China

ISBN: (纸本)9798350312614

We demonstrate a low latency fiber channel distortion equalizer that implements mainly of the equalization calculations in the optical domain, based on an integrated photonic reservoir computing chip. We discussed the equalization effect of the equalizer under different dispersion noise and optical signal-to-noise ratio (OSNR) conditions. The bit error rate (BER) of the C-band with 25Gb/s on-off key (OOK) distorted signal in 25km standard single-mode fiber (SSMF) has been reduced by 3 orders of magnitude. By optimizing weights, this equalizer can adapt to link impairments. It can effectively equalize the distorted signals at data rates of 10-40 Gb/s over 25km in SSMF transmission. Furthermore, it can efficiently equalize the impaired signals after 5-40km SSMF transmission at a signal rate of 25Gb/s. © 2023 IEEE.

关键词： equalizer low latency photonic reservoir computing silicon photonics

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Beam-scanning Antenna with High Chirality

Beam-scanning Antenna with High Chirality

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2023 Cross Strait Radio Science and Wireless Technology Conference, CSRSWTC 2023

作者： Lei, Yu-Lu Zhang, Yue-Yi Zhang, Zi-Wen Du, Chao-Hai Center for Carbon-based Electronics Networks School of Electronics State Key Laboratory of Advanced Optical Communication Systems Peking University China

ISBN: (纸本)9798350358971

Chirality finds applications in various fields such as communication, sensing, and detection. However, existing methods have limitations in generating highly circular polarized radiation. In this study, we have introduced a novel approach to achieve highly circularly polarized radiation. Based on the spin momentum locking property of the spoof surface plasmon polaritons, a set of cylinders is introduced to facilitate the coupling of the strongly confined surface wave into radiation. This radiation carries spin angular momentum, which aligns with the transverse spin angular momentum, resulting in circular polarization. The proposed structure also enables beam scanning functionality, which is experimentally validated through the fabrication of an antenna. Overall, our scheme holds promise for generating highly circularly polarized radiation with applications in a wide range of fields. © 2023 IEEE.

关键词： chirality spin angular momentum spin momentum locking surface plasmon polaritons

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Validating the First-Order Topological Charge of Vortex Smith-Purcell Radiation 15

Validating the First-Order Topological Charge of Vortex Smit...

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15th International Conference on Microwave and Millimeter Wave Technology, ICMMT 2023

作者： Zhang, Zi-Wen Du, Chao-Hai Lei, Yu-Lu Zhu, Juan-Feng Zhu, Yu Li, Fan-Hong Shi-Pan Peking University Center for Carbon-Based Electronics State Key Laboratory of Advanced Optical Communication Systems and Networks School of Electronics China

ISBN: (纸本)9798350338874

The vortex Smith-Purcell radiation with topological charge (TC) of 0 and -2 is proposed based on spoof surface plasmons (SSPs) carrying orbital angular momentums (OAMs) in this work. Due to the chirality of the helical grating, their eigenmodes are a series of SSPs carrying OAMs concerning the harmonic order. By customizing the slot depths over two propagation periods, these SSPs are exposed to the light cone. When the swift electrons skim over the grating and the wavenumber-matching conditions are met between the electron and SSPs carry ±1h, the vortex beams with TCs = 0 and -2 are emitted into the free space with broadband tunability. The proposed method and validation may prompt the development of mode-division multiplexed communications and chiral detections based on vortex beams. © 2023 IEEE.

关键词： Vortex flow

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A Random Amplitude Modulated Continuous Wave Lidar system Based on Lens-assisted Beam Steering for Ranging and Velocimetry

A Random Amplitude Modulated Continuous Wave Lidar System Ba...

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2023 Opto-Electronics and communications Conference, OECC 2023

作者： Cao, Xianyi Long, Jiaxuan Wu, Kan Li, Tianyi Chen, Jianping Shanghai Jiao Tong University State Key Laboratory of Advanced Optical Communication Systems and Networks Department of Electronic Engineering Shanghai China

A non-coaxial Lidar system based on lens-assisted beam-steering technology is demonstrated. A coherent random amplitude modulated continuous wave detection method is applied in the Lidar system to enable the capabilit... 详细信息

ISBN: (纸本)9781665462136

关键词： optical radar

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Self-Starting NPE Mode Locked Linear Cavity Single Mode Yb:Fiber Laser Delivering 736 MHz Repetition Rate Femtosecond Pulses 16

Self-Starting NPE Mode Locked Linear Cavity Single Mode Yb:F...

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16th Pacific Rim Conference on Lasers and Electro-Optics, CLEO-PR 2024

作者： Cao, Jinpeng Yang, Bowei Chen, Zhendong Yang, Ruoao Zhang, Zhigang Zhang, Meng Beihang University Key Laboratory of School of Electronic and Information Engineering Beijing100191 China School of Electronics Peking University State Key Laboratory of Advanced Optical Communication Systems and Networks Beijing100871 China

ISBN: (纸本)9798350372076

关键词： Pulse repetition rate

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Correction Algorithm of Doppler Effect on the Comb-Based FSO-TWTFT for Satellite Application

Correction Algorithm of Doppler Effect on the Comb-Based FSO...

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2023 Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium, EFTF/IFCS 2023

作者： Wang, Long Jiao, Wenhai Hu, Liang Chen, Jianping Wu, Guiling Shanghai Jiao Tong University State Key Laboratory of Advanced Optical Communication System and Networks Department of Electronic Engineering China Beijing Institute of Tracking and Telecommunication Technology Beijing China

We further analyze the Doppler effect caused by high-velocity platform motion for the comb-based free-space optical two-way time-frequency transfer technique. A novel synchronization algorithm is proposed to correct t... 详细信息

ISBN: (纸本)9798350311426

关键词： Doppler effect optical frequency comb transfer satellite motion

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Ultrafast laser state active controlling based on anisotropic quasi-1D material

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Light(Science & Applications) 2024年第4期13卷 717-726页

作者： Zixin Yang Qiang Yu Jian Wu Haiqin Deng Yan Zhang Wenchao Wang Tianhao Xian Luyi Huang Junrong Zhang Shuai Yuan Jinyong Leng Li Zhan Zongfu Jiang Junyong Wang Kai Zhang Pu Zhou College of Advanced Interdisciplinary Studies National University of Defense TechnologyChangsha 410073China. Nanhu Laser Laboratory National University of Defense TechnologyChangsha 410073China. i-Lab&Key Laboratory of Nanodevices and Applications&Key Laboratory of Nanophotonic Materials and Devices Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China. School of Applied and Engineering Physics Cornell UniversityIthacaNY 14853USA. State Key Laboratory of Advanced Optical Communication Systems and Networks School of Physics and AstronomyShanghai Jiao Tong UniversityShanghai 200240China. Shanghai Key Lab of Modern Optical System University of Shanghai for Science and TechnologyShanghai 200093China

Laser state active controlling is challenging under the influence of inherent loss and other nonlinear effects in ultrafast *** an extension of degree of freedom in optical devices based on low-dimensional materials may be a way ***,the anisotropic quasi-one-dimensional layered material Ta2PdS6 was utilized as a saturable absorber to modulate the nonlinear parameters effectively in an ultrafast system by polarization-dependent *** polarization-sensitive nonlinear optical response facilitates the Ta2PdS6-based mode-lock laser to sustain two types of laser states,i.e.,conventional soliton and noise-like *** laser state was switchable in the single fiber laser with a mechanism revealed by numerical *** coding was further demonstrated in this platform by employing the laser as a codable light *** work proposed an approach for ultrafast laser state active controlling with low-dimensional material,which offers a new avenue for constructing tunable on-fiber devices.

关键词： polarization fiber controlling

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Investigation on photonic crystal nanobeam cavity based on mixed diamond–circular holes

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Nanotechnology and Precision Engineering 2024年第1期7卷 63-70页

作者： Jingtong Bin Kerui Feng Shang Ma Ke Liu Yong Cheng Jing Chen Qifa Liu College of Telecommunication and Information Engineering Nanjing University of Posts and TelecommunicationsNanjing 210003China College of Electronic and Optical Engineering and College of Flexible Electronics(Future Technology) Nanjing University of Posts and TelecommunicationsNanjing 210003China State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Jiao Tong UniversityShanghai 200240China

A photonic crystal nanobeam cavity(M-PCNC)with a structure incorporating a mixture of diamond-shaped and circular air holes is *** performance of the cavity is simulated and studied *** theﬁnite-difference time-domain method,the parameters of the M-PCNC,including cavity thickness and width,lattice constant,and radii and numbers of holes,are optimized,with the quality factor Q and mode volume Vm as performance *** modulation of the lattice constant and hole radius enable the proposed M-PCNC to realize outstanding *** optimized cavity possesses a high quality factor Q 1.45105 and an ultra-small mode=×volume Vm 0.01(λ/n)[Zeng et al.,Opt Lett 2023:48;3981–3984]in the telecommunications wavelength *** can be progres-=sively squeezed in both the propagation direction and the perpendicular in-plane direction by a series of interlocked anti-slots and slots in the diamond-shaped hole ***,the energy can be conﬁned within a small mode volume to achieve an ultra-high Q/Vm ratio.

关键词： Photonic crystal nanobeam cavity Mixed diamond–circular holes Slots and anti-slots FDTD simulation Quality factor Mode volume

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