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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： Xu, Mingyu Lei, Peng Bai, Yunhui Chen, Zhangyuan Xie, Xiaopeng State Key Laboratory of Advanced Optical Communication Systems and Networks School of Electronics Peking University Beijing100871 China

We report slow-light enhancement of stimulated Brillouin scattering on SOI for the fisrt time. With suspended Bragg grating structure, the device achieve a 2.1-fold of Brillouin gain coeffiecient. © Optica Publis... 详细信息

ISBN: (纸本)9781957171395

关键词： Stimulated Brillouin scattering

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Sensitivity-enhanced fiber optic gyroscope for rotational seismology

Sensitivity-enhanced fiber optic gyroscope for rotational se...

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2023 advanced Fiber Laser Conference, AFL 2023

作者： Wang, Wenbo Zhu, Lanxin He, Yan Chen, Yanjun Huang, Huimin Cao, Xinyu Shi, Fangshuo Li, Zhengbin State Key Laboratory of Advanced Optical Communication Systems and Networks School of Electronics Peking University Beijing100871 China

ISBN: (纸本)9781510677661

The measurement of rotational components in seismic waves holds significant importance in various fields, including seismic early warning, subsurface structure inversion, and the study of Earth's internal dynamic processes. The interferometric fiber optic gyroscope (IFOG) is a kind of sensor that measures the rotational velocity of an object based on the Sagnac effect. In this study, a synchronous four-state modulation scheme based on a light source sharing configuration is employed to suppress RIN. Moreover, this work extensively investigates the impact of shot noise and Johnson-Nyquist noise. By adjusting the modulation depths of the two minimum configurations, the influence of shot noise and Johnson-Nyquist noise is well-handled while achieving RIN suppression. Furthermore, this scheme avoids introducing any external feedback, thereby preventing a decrease in sensitivity caused by the dead zone issue. In a test on detecting the rotation rate of the Earth, a self-noise level of 55 nrad/s/Hz1/2 and an angular random walk of 1.5 × 10-4 deg/h1/2 are achieved with an enclosed area of only 25.5 m2. Compared to the minimum configuration using the conventional phase generated carrier algorithm, the scheme realizes a 20-fold reduction in self-noise and an 18-fold reduction in angular random walk. © COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.

关键词： Seismology

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Metamaterial-enabled arbitrary on-chip spatial mode manipulation

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Light(Science & Applications) 2022年第7期11卷 1482-1492页

作者： Jinlong Xiang Zhiyuan Tao Xingfeng Li Yaotian Zhao Yu He Xuhan Guo Yikai Su State Key Laboratory of Advanced Optical Communication Systems and Networks Department of Electronic EngineeringShanghai Jiao Tong UniversityShanghai 200240China

On-chip spatial mode operation,represented as mode-division multiplexing(MDM),can support high-capacity data communications and promise superior performance in various systems and numerous applications from optical sensing to nonlinear and quantum ***,the scalability of state-of-the-art mode manipulation techniques is significantly hindered not only by the particular mode-order-oriented design strategy but also by the inherent limitations of possibly achievable mode ***,metamaterials capable of providing subwavelength-scale control of optical wavefronts have emerged as an attractive alternative to manipulate guided modes with compact footprints and broadband ***,we propose a universal yet efficient design framework based on the topological metamaterial building block(BB),enabling the excitation of arbitrary high-order spatial modes in silicon *** simply programming the layout of multiple fully etched dielectric metamaterial perturbations with predefined mathematical formulas,arbitrary high-order mode conversion and mode exchange can be simultaneously realized with uniform and competitive *** extraordinary scalability of the metamaterial BB frame is experimentally benchmarked by a record high-order mode operator up to the *** a proof of conceptual application,an 8-mode MDM data transmission of 28-GBaud 16-QAM optical signals is also verified with an aggregate data rate of 813 Gb/s(7%FEC).This user-friendly metamaterial BB concept marks a quintessential breakthrough for comprehensive manipulation of spatial light on-chip by breaking the long-standing shackles on the scalability,which may open up fascinating opportunities for complex photonic functionalities previously inaccessible.

关键词： arbitrary proof breakthrough

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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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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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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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Low Complexity Joint Chromatic Dispersion and Time/Frequency Offset Estimation Based on Fractional Fourier Transform

Low Complexity Joint Chromatic Dispersion and Time/Frequency...

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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： Xu, Guozhi Niu, Zekun Li, Lyu Hu, Weisheng Yi, Lilin State Key Lab of Advanced Optical Communication Systems and Networks School of Electronic Information and Electrical Engineering Shanghai Jiao Tong University Shanghai China

We propose and experimentally validate a joint estimation method for chromatic dispersion and time-frequency offset based on the fractional Fourier transform, which reduces computational complexity by more than 50% wh... 详细信息

ISBN: (纸本)9798350379266

关键词： Chromatic dispersion

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External Cavity Laser for Chip-Scale Atomic Clock

External Cavity Laser for Chip-Scale Atomic Clock

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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： Miao, Jie Lian, Jiqing Liu, Tianyu Pan, Duo Chen, Jingbiao Peking University State Key Laboratory of Advanced Optical Communication Systems and Networks Department of Electronics Beijing100871 China Xidian University State Key Laboratory of Advanced Optical Communication Systems and Networks School of Mechano-Electronic Engineering Xi'an710071 China Lanzhou Institute of Physics State Key Laboratory of Advanced Optical Communication Systems and Networks Lanzhou730000 China

ISBN: (纸本)9798350311426

In this paper we report a new coherent population trapping (CPT) atomic clock based on external cavity laser. Unlike usual CPT atomic clocks, where used the vertical cavity surface emitting laser (VCSEL), we combine the external cavity laser (ECL) with CPT atomic clock to improve the stability. Compared with VCSEL, the ECL has higher laser power of 10 mW and narrower linewidth of 0.8 MHz, meaning that the signal-to-noise ratio of clock can be further improved. © 2023 IEEE.

关键词： atomic clock chip scale CPT ECL

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Chip-Scale optical Clock Scheme Based on Dual-Wavelength Modulation Transfer Spectroscopy

Chip-Scale Optical Clock Scheme Based on Dual-Wavelength Mod...

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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： Miao, Jie Yang, Qiaohui Lian, Jiqing Liu, Tianyu Pan, Duo Chen, Jingbiao Peking University State Key Laboratory of Advanced Optical Communication Systems and Networks Department of Electronics Beijing100871 China Xidian University State Key Laboratory of Advanced Optical Communication Systems and Networks School of Mechano-Electronic Engineering Xi'an710071 China Lanzhou Institute of Physics State Key Laboratory of Advanced Optical Communication Systems and Networks Lanzhou730000 China

ISBN: (纸本)9798350311426

In this paper we propose a new scheme to realize the chip-scale optical clock by using a dual-wavelength modulation transfer spectroscopy (DWMTS). The electro-optical modulator (EOM) and isolator in conventional modulation transfer spectroscopy which is complicated to be built on chip can thus be avoided. We remove the EOM and isolator at the price of an extra laser, which perform the volume optimization of the entire optical system, making the optical clock based on DWMTS to be a competitive candidate. © 2023 IEEE.

关键词： chip-scale frequency stability modulation transfer spectrum optical clock

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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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