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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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PON Monitoring Method based on Novel optical Visual Splitter

PON Monitoring Method based on Novel Optical Visual Splitter

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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： Zhu, Songlin Zhu, Yidai Fan, Xinyu He, Zuyuan Wireline Product Planning Department ZTE Corporation Shanghai China State Key Laboratory of Advanced Optical Communication System and Networks Shanghai Jiao Tong University Shanghai China

We propose a novel visual optical splitter used in passive optical network (PON) architecture to realize PON monitoring with the help of a multi-wavelength optical time domain reflectometry (OTDR), which reduce 10 dB ... 详细信息

ISBN: (纸本)9798350379266

关键词： optical beam splitters

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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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Design and analysis of an integrated optical coupler based on three-core fiber with long-period gratings

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optical and Quantum Electronics 2024年第10期56卷 1-14页

作者： Jiang, Yan Zhao, Yunhe Wang, Xin Ma, Lin Chen, Siyu Liu, Yunqi He, Zuyuan Institute of Logistics Science and Engineering Shanghai Maritime University Shanghai201306 China State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Jiao Tong University Shanghai200240 China Key Laboratory of Specialty Fiber Optics and Optical Access Networks Shanghai University Shanghai200444 China

Oriented to the multicore fiber-based space-division multiplexing (SDM) networks, the inter-core coupling in multicore fiber is desired to transfer signals between cores. In this paper, we proposed and designed an integrated optical coupler based on three-core fiber (TCF) with long-period gratings (LPGs). The TCF with three cores distributed in the cladding connected with single-mode fiber at both ends through adjacent cores. The self-coupling characteristics of TCF are studied firstly, and the effects of core pitch and coupling distance on coupling efficiency are analyzed to rule out the direct coupling between adjacent cores, indicating that coupling distance increases with the core pitch increases. With LPGs induced in TCF, coupling between core mode and cladding mode in each individual core is realized, and then the power at resonance wavelength transfers among cores through the overlapped cladding modes. Moreover, with the LPGs, the efficient coupling among adjacent cores in TCF has been realized at the C-band. In addition, the influence of structural parameters such as core pitch, grating duty cycle and coupling co-efficiency do affect the coupling efficiency of TCF-LPGs. By adjusting the structural parameters properly, coupling efficiency of ~ 66% could be achieved to equalizing the output power in three cores. Therefore, the proposed TCF-LPGs could be used as an optical coupler, which would be helpful in multicore fiber-based SDM networks. © The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2024.

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Time-Series Prediction Tasks with a Small-Scale Integrated Photonic Reservoir

Time-Series Prediction Tasks with a Small-Scale Integrated P...

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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： Ding, Baoqin Pei, Li Bai, Bing Bai, Bowen Sui, Juan Wang, Jianshuai Key Laboratory of All-Optical Networks and Modern Communication Networks of Ministry of Education Institute of Lightwave Technology Beijing Jiaotong University Beijing100044 China Technology Company Ltd. Beijing100081 China State Key Laboratory of Advanced Optical Communications System and Networks School of Electronics Peking University Beijing100871 China

The small-scale integrated photonic reservoirs excel in binary tasks but encounter challenges in broader predictions. This article achieves superior prediction performance by refining both algorithmic and input strategy perspectives, utilizing a 32-node integrated photonic reservoir. © Optica Publishing Group 2024

关键词： Photonic integrated circuits

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Time-Series Prediction Tasks with a Small-Scale Integrated Photonic Reservoir

Time-Series Prediction Tasks with a Small-Scale Integrated P...

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2024 Conference on Lasers and Electro-Optics, CLEO 2024

ISBN: (纸本)9781957171395

关键词： Photonic integrated circuits

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1λ 1.6-Tb/s Direct Detection via a Hybrid optical Hilbert Receiver and Stokes Vector Receiver

1λ 1.6-Tb/s Direct Detection via a Hybrid Optical Hilbert R...

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2024 IEEE Photonics Conference, IPC 2024

作者： Zhu, Yixiao Fang, Xiansong Zhou, Lingjun Zhu, Junbo Li, Yunchen Zhou, Xian Zhong, Kangping Tao Lau, Alan Pak He, Zhixue Wang, Lei Hu, Weisheng Li, Ke Zhang, Fan Peking University State Key Laboratory of Advanced Optical Communication System and Networks Beijing100871 China University of Science and Technology Beijing Beijing100083 China The Hong Kong Polytechnic University Photonics Research Institute Department of Electrical and Electronic Engineering Hong Kong Shanghai Jiao Tong University State Key Laboratory of Advanced Optical Communication System and Networks Shanghai200240 China Pengcheng Laboratory Shenzhen518000 China

ISBN: (纸本)9798350361957

We propose a hybrid optical Hilbert receiver and Stokes vector receiver (OH-SVR) capable of phase and polarization diversity. We experimentally demonstrate single-wavelength direct detection at 1.6-Tb/s and 1.56-Tb/s line rates at BTB and after 10-km standard single-mode fiber transmission for data-center interconnects. © 2024 IEEE.

关键词： Single mode fibers

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Electromagnetic metamaterial agent

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Light(Science & Applications) 2025年第1期14卷 118-130页

作者： Shengguo Hu Mingyi Li Jiawen Xu Hongrui Zhang Shanghang Zhang Tie Jun Cui Philipp del Hougne Lianlin Li State Key Laboratory of Advanced Optical Communication Systems and Networks School of ElectronicsPeking UniversityBeijing100871China National Key Laboratory for Multimedia Information Processing School of Computer SciencePeking UniversityBeijing100871China State Key Laboratory of Millimeter Waves Southeast UniversityNanjing210096China Pazhou Laboratory(Huangpu) GuangzhouGuangdong510555China Univ Rennes CNRSIETR-UMR 6164F-35000RennesFrance

Metamaterials have revolutionized wave control;in the last two decades,they evolved from passive devices via programmable devices to sensor-endowed self-adaptive devices realizing a user-specified *** deep-learning techniques play an increasingly important role in metamaterial inverse design,measurement post-processing and end-to-end optimization,their role is ultimately still limited to approximating specific mathematical relations;the metamaterial is still limited to serving as proxy of a human operator,realizing a predefined ***,we propose and experimentally prototype a paradigm shift toward a metamaterial agent(coined metaAgent)endowed with reasoning and cognitive capabilities enabling the autonomous planning and successful execution of diverse long-horizon tasks,including electromagnetic(EM)field manipulations and interactions with robots and *** recently released foundation models,metaAgent reasons in high-level natural language,acting upon diverse prompts from an evolving complex ***,metaAgent's cerebrum performs high-level task planning in natural language via a multi-agent discussion mechanism,where agents are domain experts in sensing,planning,grounding,and *** response to live environmental feedback within a real-world setting emulating an ambient-assisted living context(including human requests in natural language),our metaAgent prototype self-organizes a hierarchy of EM manipulation tasks in conjunction with commanding a *** masters foundational EM manipulation skills related to wireless communications and sensing,and it memorizes and learns from past experience based on human feedback.

关键词： agent prompt reasoning

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Intelligent indoor metasurface robotics

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National Science Review 2023年第8期10卷 20-32页

作者： Hanting Zhao Shengguo Hu Hongrui Zhang Zhuo Wang Hao Dong Philipp del Hougne Tie Jun Cui Lianlin Li State Key Laboratory of Advanced Optical Communication Systems and Networks School of Electronics Peking University Center on Frontiers of Computing Studies School of Computer Science Peking University The French National Centre for Scientific Research(CNRS) University of Rennes State Key Laboratory of Millimeter Waves Southeast University

Intelligent indoor robotics is expected to rapidly gain importance in crucial areas of our modern society such as at-home health care and factories. Yet, existing mobile robots are limited in their ability to perceive and respond to dynamically evolving complex indoor environments because of their inherently limited sensing and computing resources that are, moreover, traded off against their cruise time and payload. To address these formidable challenges, here we propose intelligent indoor metasurface robotics(I2MR),where all sensing and computing are relegated to a centralized robotic brain endowed with microwave perception; and I2MR's limbs(motorized vehicles, airborne drones, etc.) merely execute the wirelessly received instructions from the brain. The key aspect of our concept is the centralized use of a computation-enabled programmable metasurface that can flexibly mold microwave propagation in the indoor wireless environment, including a sensing and localization modality based on configurational diversity and a communication modality to establish a preferential high-capacity wireless link between the I2MR's brain and limbs. The metasurface-enhanced microwave perception is capable of realizing low-latency and high-resolution three-dimensional imaging of humans, even around corners and behind thick concrete walls, which is the basis for action decisions of the I2MR's brain. I2MR is thus endowed with real-time and full-context awareness of its operating indoor environment. We implement, experimentally, a proof-of-principle demonstration at ～2.4 GHz, in which I2MR provides health-care assistance to a human inhabitant. The presented strategy opens a new avenue for the conception of smart and wirelessly networked indoor robotics.

关键词： intelligent metasurfaces intelligent robotics edge devices IoT 6G

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Atomic transport dynamics in crossed optical dipole trap

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Chinese Physics B 2024年第7期33卷 293-301页

作者：彭鹏张正熙樊耀塬殷国玲毛德凯陈徐宗熊炜周小计 State Key Laboratory of Advanced Optical Communication System and Network School of ElectronicsPeking UniversityBeijing 100871China Institute of Carbon-based Thin Film Electronics Peking UniversityTaiyuan 030012China State Key Laboratory of Quantum Optics and Quantum Optics Devices Institute of Opto-ElectronicsShanxi UniversityTaiyuan 030006China

We study the dynamical evolution of cold atoms in crossed optical dipole trap theoretically and experimentally. The atomic transport process is accompanied by two competitive kinds of physical mechanics, atomic loading and atomic *** loading process normally is negligible in the evaporative cooling experiment on the ground, while it is significant in preparation of ultra-cold atoms in the space station. Normally, the atomic loading process is much weaker than the atomic loss process, and the atomic number in the central region of the trap decreases monotonically, as reported in previous research. However, when the atomic loading process is comparable to the atomic loss process, the atomic number in the central region of the trap will initially increase to a maximum value and then slowly decrease, and we have observed the phenomenon first. The increase of atomic number in the central region of the trap shows the presence of the loading process, and this will be significant especially under microgravity conditions. We build a theoretical model to analyze the competitive relationship, which coincides with the experimental results well. Furthermore, we have also given the predicted evolutionary behaviors under different conditions. This research provides a solid foundation for further understanding of the atomic transport process in traps. The analysis of loading process is of significant importance for preparation of ultra-cold atoms in a crossed optical dipole trap under microgravity conditions.

关键词： cold atom crossed optical dipole trap transport process

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