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2024 Asia communications and Photonics Conference, ACP 2024 and International Conference on Information Photonics and optical communications, IPOC 2024

作者： Ji, Tonghui Wu, Qi Xu, Zhaopeng Ji, Honglin Yang, Yu Liu, Lulu Wang, Shangcheng Sun, Zhongliang Liang, Junpeng Fan, Linsheng Tang, Jianwei Wei, Jinlong Li, Juhao Hu, Weisheng Pengcheng Laboratory Shenzhen China State Key Lab of Advanced Optical Communication System and Networks Shanghai Jiao Tong University Shanghai China State Key Laboratory of Advanced Optical Communication Systems & Networks Peking University Beijing China

We propose a fast and accurate estimation method of MDL-induced SNR penalty with non-uniform noise loading in SDM *** proposed approach substantially saves the time cost while maintaining an estimation error within 0.... 详细信息

ISBN: (纸本)9798350379266

关键词： Signal to noise ratio

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Ultra-compact fiber tapering:plasmonics and structural bending as new combination of heat and pull

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Light(Science & Applications) 2023年第8期12卷 1441-1443页

作者： Tian Yang State Key Laboratory of Advanced Optical Communication Systems and Networks Key Laboratory for Thin Film and Microfabrication of the Ministry of EducationSchool of Electronic Information and Electrical EngineeringShanghai Jiao Tong University200240 ShanghaiChina

Fabrication of optical fiber tapers is realized with a combination of plasmonic microheaters and specially designed structural bending of optical fibers,which provide the necessary elements of"heat and pull".The resultant compactness and flame-free condition enable monitoring of the tapering process inside a scanning electron microscope.

关键词： fiber taper optical

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Integrated Distributed Sensing and Quantum communication networks

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Research 2025年第1期2024卷 899-914页

作者： Yuehan Xu Tao Wang Peng Huang Guihua Zeng State Key Laboratory of Advanced Optical Communication Systems and Networks Center of Quantum Sensing and Information ProcessingShanghai Jiao Tong UniversityShanghai 200240China Shanghai Research Center for Quantum Sciences Shanghai 201315China Hefei National Laboratory Hefei 230088China

The integration of sensing and communication can achieve ubiquitous sensing while enabling ubiquitous *** the gradually improving global communication,the integrated sensing and communication system based on optical fibers can accomplish various functionalities,such as urban structure imaging,seismic wave detection,and pipeline safety *** the development of quantum communication,quantum networks based on optical fiber are gradually being *** this paper,we propose an integrated sensing and quantum network(ISAQN)scheme,which can achieve secure key distribution among multiple nodes and distributed sensing under the standard quantum *** continuous variables quantum key distribution protocol and the round-trip multiband structure are adopted to achieve the multinode secure key ***,the spectrum phase monitoring protocol is proposed to realize distributed *** determines which node is vibrating by monitoring the frequency spectrum and restores the vibration waveform by monitoring the phase *** scheme is experimentally demonstrated by simulating the vibration in a star structure *** results indicate that this multiuser quantum network can achieve a secret key rate of approximately 0.7 Mbits/s for each user under 10-km standard fiber transmission,and its network capacity is *** terms of distributed sensing,it can achieve a vibration response bandwidth ranging from 1 Hz to 2 kHz,a strain resolution of 0.50 nε/Hz,and a spatial resolution of 0.20 m under shot-noise-limited *** proposed ISAQN scheme enables simultaneous quantum communication and distributed sensing in a multipoint network,laying a foundation for future large-scale quantum networks and high-precision sensing networks.

关键词： integrated sensing quantum networks ubiquitous sensing pipeline safety monitoringwith ubiquitous communicationwithin quantum communicationquantum networks

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Non-Abelian permutations meet D4 group in a four-state non-Hermitian system

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Physical Review B 2024年第2期110卷 L020104-L020104页

作者： Linsheng Bao Aoqian Shi Yuchen Peng Peng Peng Jiayun Ning Zhennan Wang Chao Peng Jianjun Liu Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education School of Physics and Electronics State Key Laboratory of Advanced Optical Communication Systems and Networks Department of Electronics and Frontiers Science Center for Nano-optoelectronics Greater Bay Area Institute for Innovation

Encircling non-Hermitian exceptional points (EPs) leads to the swapping of eigenstates, which naturally corresponds to the different state permutations. Here, we find that non-Abelian permutations meet the D4 group in a four-state non-Hermitian system. By encircling three different exceptional arcs within a three-dimensional parameter space, we present seven eigenvalue permutations and correlate them with seven nontrivial operations in the non-Abelian D4 group. Furthermore, our theory reveals the topological properties of higher-order EPs, improves the understanding of EPs in non-Hermitian systems, and offers a robust methodology for examining non-Abelian properties in systems with multiple EPs.

关键词： Topological order Non-Hermitian systems Group theory

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Experiment of 2×40Gbd PAM8 MISO-FSO system reinforced by high-speed optical signal coupling and precoder-shaped multi-level polar codes

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optical and Quantum Electronics 2025年第1期57卷 1-18页

作者： Yang, Weiying Liu, Xiaoyu Xiao, Shilin Liu, Zhiyang The State Key Laboratory of Advanced Optical Communication System and Networks Shanghai Jiao Tong University Dongchuan Road Shanghai200240 China

This paper proposes and successfully demonstrates a high-speed optical signal coupling (HS-OSC) of 2x40Gbaud PAM8 with precoder-shaped multi-level polar codes (PS-MLPC) in a gain-oriented multiple-input single-output free space optical (MISO-FSO) system. With the pilot-based correction (PBC), the system gets a multi-path error (MPE) detecting and correcting module, which can minimize the MPE and achieve the gain-oriented HS-OSC. On the other hand, PS-MLPC is deployed in the MISO-FSO system to provide the non-uniform PAM-8 symbols and save the power budget. In the experiment, the PBC module is proven to ensure the HS-OSC process by comparing the captured waveforms. Results in the static FSO channel validate that the bit error rate (BER) of the MISO-FSO system is improved from 4.76×10-3 to below 10-5 and the PS-MLPC PAM-8 saves most 0.85 dB effective signal-to-noise ratio (ESNR). Under turbulent conditions, the gain-oriented MISO-FSO system not only enhances the mean ESNR of about 4.3–5.4 dB but also mitigates the standard deviation of ESNR by 40.6–61.4 %, on which the PS-MLPC provides a Q-factor gain of 1.17–1.64 dB. © The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2024.

关键词： Budget control

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Analog parallel processor for broadband multifunctional integrated system based on silicon photonic platform

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Light(Science & Applications) 2025年第3期14卷 746-756页

作者： Na Qian Defu Zhou Haowen Shu Ming Zhang Xingjun Wang Daoxin Dai Xiao Deng Weiwen Zou State Key Laboratory of Advanced Optical Communication Systems and Networks Intelligent Microwave Lightwave Integration Innovation Center(imLic)Department of Electronic EngineeringShanghai Jiao Tong UniversityShanghaiChina State Key Laboratory of Advanced Optical Communications System and Networks Department of ElectronicsSchool of Electronics Engineering and Computer SciencePeking UniversityBejingChina State Key Laboratory of Extreme Photonics and Instrumentation College of Optical Science and EngineeringInternational Research Center for Advanced PhotonicsZhejiang UniversityHangzhouChina

Sharing the hardware platform between diverse information systems to establish full cooperation among different functionalities has attracted substantial ***,broadband multifunctional integrated systems with large operating frequency ranges are challenging due to the bandwidth and computing speed restrictions of electronic ***,we report an analog parallel processor(APP)based on the silicon photonic platform that directly discretizes and parallelizes the broadband signal in the analog *** APP first discretizes the signal with the optical frequency comb and then adopts optical dynamic phase interference to reassign the analog signal into 2N parallel *** photonic analog parallelism,data rate and data volume in each sequence are simultaneously compressed,which mitigates the requirement on each parallel computing ***,the fusion of the outputs from each computing core is equivalent to directly processing broadband *** the proof-of-concept experiment,two-channel analog parallel processing of broadband radar signals and high-speed communication signals is implemented on the single photonic integrated *** bandwidth of broadband radar signal is 6 GHz and the range resolution of 2.69 cm is *** wireless communication rate of 8 Gbit/s is also *** the bandwidth and speed limitations of the single-computing core along with further exploring the multichannel potential of this architecture,we anticipate that the proposed APP will accelerate the development of powerful optoelectronic processors as critical support for applications such as satellite networks and intelligent driving.

关键词： analog parallel processor sharing hardware platform multifunctional integrated systems establish full cooperation different functionalities analog parallel processor app based silicon photonic platform electronic circuitryherewe broadband signal

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Integrated spatial photonic XY Ising sampler based on a high-uniformity 1×8 multi-mode interferometer

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光子学研究（英文） 2025年第5期13卷 1419-1427页

作者： XIN YE WENJIA ZHANG ZUYUAN HE State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Jiao Tong UniversityShanghai 200240China

Spatial photonic Ising machines,as emerging artificial intelligence hardware solutions by leveraging unique physical phenomena,have shown promising results in solving large-scale combinatorial ***,spatial light modulator enabled Ising machines still remain bulky,are very power demanding,and have poor *** this study,we propose an integrated XY Ising sampler based on a highly uniform multimode inter-ferometer and a phase shifter array,enabling the minimization of both discrete and continuous spin *** elucidate the performance of this computing platform in achieving fully programmable spin couplings and external magnetic ***,we successfully demonstrate the weighted full-rank Ising model with a linear dependence of 0.82 and weighted MaxCut problem solving with the proposed *** results illustrate that the developed structure has significant potential for larger-scale,reduced power consumption and increased operational speed,positioning it as a versatile platform for commercially viable high-performance samplers of combinatorial optimization problems.

关键词： integrated spatial ising based high-uniformity interferometer multi-mode photonic sampler

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Correction for phase-generated carrier algorithm demodulation errors caused by uneven frequency response

Correction for phase-generated carrier algorithm demodulatio...

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2023 advanced Fiber Laser Conference, AFL 2023

作者： Zhu, Lanxin Huang, Huimin Cao, Xinyu Li, Zhengbin State Key Laboratory of Advanced Optical Communication Systems and Networks School of Electronics Peking University Beijing100871 China

ISBN: (纸本)9781510677661

The phase-generated carrier (PGC) algorithm is one of the most commonly employed demodulation schemes in optical fiber sensors. It exhibits high sensitivity in detecting weak signal and is less susceptible to fluctuations in light source intensity. However, the inevitable uneven frequency response of photoelectric detection will lead to distortion in the harmonic amplitudes, subsequently resulting in demodulation errors in the PGC scheme. This significantly jeopardizes the precision and accuracy of optical fiber sensors. This paper analyzes the demodulation errors in the PGC algorithm caused by non-uniform frequency response and proposes a correction method. In this method, only a correction factor is introduced in the final step of the PGC algorithm, without introducing additional complex computations. In comparison to conventional correction algorithms such as linear regression, function fitting, and neural networks, this method is simple, effective, and resource-friendly for DSP systems with limited resources. Experimental validation of this method is conducted using a fiber optic gyroscope prototype. The results demonstrate a remarkable reduction of 33-fold in demodulation error within the measurement range of-6 to +6 radian, reducing it from 610 parts per million (ppm) to a mere 18.3 ppm. © COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.

关键词： Demodulation

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Erbium-doped lithium niobate waveguide amplifier with internal net gain exceeding 20 dB

Erbium-doped lithium niobate waveguide amplifier with intern...

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2024 Conference on Lasers and Electro-Optics, CLEO 2024

作者： Cai, Minglu Li, Tianyi Zhang, Xujia Cao, Xianyi Wang, Long Liu, Yuanbin Chen, Jianping Wu, Kan State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Jiao Tong University Shanghai200240 China

The 10-cm long erbium-doped lithium niobate waveguide amplifier can achieve 52.2 dB signal enhancement with a 22.2 dB internal net gain at 1531 nm, which exceeds 20 dB at 45% wavelengths of the C-band. © Optica P... 详细信息

ISBN: (纸本)9781957171395

关键词： Erbium doped fiber amplifiers

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Complex Tensor Convolution in Photonic Frequency Synthetic Dimensions

Complex Tensor Convolution in Photonic Frequency Synthetic D...

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CLEO: Science and Innovations in CLEO 2024, CLEO: S and I 2024 - Part of Conference on Lasers and Electro-Optics

作者： Guo, Jiayuan Zhang, Wenjia Jiang, Yue He, Zuyuan State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Jiao Tong University Shanghai200240 China

We propose a complex tensor convolution accelerator in photonic frequency synthetic dimensions, which is capable of extracting coupling information from dual-frame images of size 52×42 at a rate of 4.94M frame-pe... 详细信息

关键词： Tensors

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