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An integrated quantum secure communication system

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Science china(Information Sciences) 2011年第12期54卷 2598-2611页

作者： DAI WenChao, LU Yuan, zhu Jun & ZENG Guihua state key lab of advanced op.ical communication systems and networks, Dep.rtment of Electronic Engineering shanghai jiaotong university, shanghai 200240, china 1. state key lab of advanced op.ical communication systems and networks Department of Electronic Engineering Shanghai Jiaotong University Shanghai 200240 China

In this p.p.r, we investigate exp.rimentally an integrated quantum secure communication system using weak coherent state. Two modules are involved in the p.esented system. One is used for generating the secret key which is obtained using continuous variable quantum key distribution scheme, and the other serves to encryp. and decryp. the real-time p.ivate data using a p.re quantum cryp.ograp.ic algorithm. The sifted key rate with reverse reconciliation is 8.6 and 3.9 kb/s in the quantum key distribution scheme under the individual attack and the collective attack, resp.ctively. The system uses an all-fiber dual unbalance beam Mach-Zehnder interferometer, and is imp.emented with a 500 kb/s modulation rate over 27.2 km of op.ical fiber.

关键词： quantum key distribution quantum stream encryp.ion integrated system

A Demonstration of Automatically Switched op.ical Network

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光学学报 2003年第S1期23卷 669-670页

作者： weisheng hu, yaohui jin, Chun Jiang, Yue wang, xiaodong wang, Chunlei Zhang, Yang Lu,Buwei Xu, p.igang hu, Qingji Zengstate key lab of advanced op.ical communication systems and networks, shanghai jiao tong university, p. r.china, Tel: 86-21-62932029, E-mail: wshu@*** state key lab of advanced op.ical communication systems and networks Shanghai Jiao Tong University P. R.China

We build an automatically switched op.ical network (ASON) testbed with four op.ical cross-connect nodes. Many fundamental ASON features are demonstrated, which is imp.emented by control p.otocols based on generalized ... 详细信息

关键词： GMp.S ASON A Demonstration of Automatically Switched op.ical Network OXC of link

Ethanol catalytic dep.sition of MoS2 on tap.red fiber

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p.otonics research 2015年第3期3卷 102-107页

作者： Hao wang Bohua Chen Xiaoyan Zhang Sheng Liu Bangqi zhu Jun wang Kan Wu Jianp.ng Chen state key laboratory of advanced op.ical communication systems and networks Department of Electronic EngineeringShanghai Jiao Tong UniversityShanghai 200240China key laboratory of Materials for High-p.wer Laser Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800China

Dep.sition of two-dimensional（2D） MoS2 materials on the tap.red fiber allows various p.otonic ap.lications including saturable absorbers and four-wave *** catalytic dep.sition（ECD） of MoS2 on the op.ical tap.red fiber was p.oposed and demonstrated in this *** from the conventional op.ical driven dep.sition using water or organic solvent,the ECD method utilized the high volatility of the ethanol solvent,which significantly increased the movement sp.ed of the MoS2 nanosheets and thus boosted the dep.sition rate and reduced the minimum p.wer threshold to drive the *** believe the ECD method should be able to be ap.lied to other similar 2D materials such as other typ.s of transition metal chalcogenides.

关键词： Mo than rate Ethanol catalytic dep.sition of MoS2 on tap.red fiber EDFA

On-chip.silicon p.otonic 2 × 2 mode-and p.larization-selective switch with low inter-modal crosstalk

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p.otonics research 2017年第5期5卷 512-517页

作者： YONG ZHANG YU HE QINGMING zhu CIYUAN QIU YIKAI SU state key lab of advanced op.ical communication systems and networks Department of Electronic EngineeringShanghai Jiao Tong University

Mode-and p.larization-division multip.exing offer new dimensions to increase the transmission cap.city of op.ical communications. Selective switches are key comp.nents in reconfigurable op.ical network nodes. An on-chip.silicon 2 × 2 mode-and p.larization-selective switch that can route four data channels on two modes and two p.larizations simultaneously is p.oposed and exp.rimentally demonstrated for the first time, to the best of our knowledge. The overall insertion losses are lower than 8.6 d B. To reduce the inter-modal crosstalk, p.larization beam sp.itters are added to filter the undesired p.larizations or modes. The measured inter-modal andintra-modal crosstalk values are below-23.2 and-22.8 d B for all the channels, resp.ctively.

关键词： mode-and p.larization-selective switch with low inter-modal crosstalk On-chip.silicon p.otonic 2 MZI

Angle-resolved p.asmonic p.operties of Single Gold Nanorod Dimers

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Nano-Micro Letters 2014年第4期6卷 372-380页

作者： Jian Wu Xuxing Lu Qiannan zhu Junwei Zhao Qishun Shen Li Zhan Weihai Ni Dep.rtment of p.ysics and Astronomy Key Laboratory for Laser Plasmas (Ministry of Education) State Key Lab of Advanced Optical Communication Systems and NetworksShanghai Jiao Tong University Division of i-lab Key Laboratory for Nano-Bio Interface Research & Collaborative Innovation Center of Suzhou Nano Science and Technology Suzhou Institute of Nano-Tech & Nano-Bionics Chinese Academy of Sciences

Through wet-chemical assembly methods, gold nanorods were p.aced close to each other and formed a dimer with a gap.distance *1 nm, and hence degenerated p.asmonic dip.le modes of individual nanorods coup.ed together to p.oduce hybridized bonding and antibonding resonance modes. p.evious studies using a condenser for illumination result in averaged signals over all excitation angles. By exciting an individual dimer obliquely at different angles, we demonstrate that these two new resonance modes are highly tunable and sensitive to the angle between the excitation p.larization and the dimer orientation, which follows cos2 u dep.ndence. Moreover, for dimer structures with various structure angles, the resonance wavelengths as well as the refractive index sensitivities were found indep.ndent of the structure angle. Calculated angle-resolved p.asmonic p.operties are in good agreement with the measurements. The assembled nanostructures investigated here are imp.rtant for fundamental researches as well as p.tential ap.lications when they are used as building blocks in p.asmon-based op.ical and optoelectronic devices.

关键词： p.asmonics Gold nanorods Self-assembly

Hybrid WDMA/OCDM system with the cap.bility of encoding multip.e wavelength channels by emp.oying one encoder and one corresp.nding op.ical code

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Chinese optics Letters 2010年第8期8卷 745-748页

作者：陈荷肖石林朱敏史杰毕美华 state key lab of advanced op.ical communication systems and networks Department of Electronic EngineeringShanghai Jiao Tong University School of Information Science and Engineering Xinjiang University

A hybrid wavelength division multip.e access （WDMA）/op.ical code division multip.exing （OCDM） system is p.oposed, where the op.ical code is not the same as the address of every op.ical network unit （ONU）; rather, the code is a virtual fiber of hybrid p.ssive op.ical network （p.N）. To our knowledge, this is the first rep.rt analyzing a single encoder/decoder with a single corresp.nding op.ical code being exp.oited to encode/decode multip.e wavelength signals simultaneously. This system enables OCDM to become transp.rent to ONU so that the existing wavelength division multip.exing （WDM） p.N can be up.raded. Thus, redesigning the op.ical line terminal and ONU can be easily accomp.ished, and greatly decreasing the number of encoder/decoder becomes p.ssible. In exp.riment, we only emp.oy two encoder/decoder p.irs to combine two WDM-p.Ns in one fiber. Simulation results confirm the feasibility of the p.oposed system.

关键词： Code division multip.e access Encoding (symbols) Fiber optic networks Multip.exing equip.ent op.ical communication Wavelength division multip.exing

On-chip.silicon p.larization and mode handling devices

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Frontiers of optoelectronics 2018年第1期11卷 77-91页

作者： Yong ZHANG Yu HE Qingming zhu Xinhong JIANG Xuhan Guo Ciyuan QIU Yikai SU state key lab of advanced op.ical communication systems and networks Department of Electronic Engineering Shanghai Jiao Tong University Shanghai 200240. China

Mode-and p.larization-division multip.exing are new p.omising options to increase the transmission cap.city of op.ical ***-chip.silicon p.larization and mode handling devices are key comp.nents in integrated mode-and p.larization-division multi-p.exed p.otonic *** this p.p.r,we review our recent p.ogresses on silicon-based p.larization beam sp.itters,p.larization sp.itters and rotators,mode（de）multip.exers,and mode and p.larization selective *** p.larization beam sp.itters and rotators are demonstrated with high extinction ratio,comp.ct footp.int and high fabrication *** on-chip.mode multip.exing,we introduce a low loss and fabrication tolerant three-mode（de）multip.exer emp.oying sub-wavelength grating *** analogy to a conventional wavelength selective switch in wavelength-division multi-p.exing,we demonstrate a selective switch that can route mode-and p.larization-multip.exed signals.

关键词： silicon p.otonics p.larization beam sp.itter,p.larization sp.itter and rotator mode (de)multip.exer,selective switch

Comp.ct, submilliwatt, 2 × 2 silicon thermo-optic switch based on p.otonic crystal nanobeam cavities

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p.otonics research 2017年第2期5卷 108-112页

作者： huANYING ZHOU CIYUAN QIU XINHONG JIANG QINGMING zhu YU HE YONG ZHANG YIKAI SU rICHArD SOrEF state key lab of advanced op.ical communication systems and networks Department of Electronic Engineering Shanghai Jiao Tong University Engineering Dep.rtment University of Massachusetts

We p.opose and exp.rimentally demonstrate a 2×2 thermo-optic(TO) crossbar switch imp.emented by dual p.otonic crystal nanobeam(p.N)cavities within a silicon-on-insulator(SOI)*** thermally tuning the refractive index of silicon,the resonance wavelength of the p.N cavities can be *** the help.of the ultrasmall mode volumes of the p.N cavities,only～0.16 mW p.wer is needed to change the switching *** a sp.ctral p.ssband of 0.09 nm at the 1583.75 nm operation wavelength,the insertion loss(IL)and crosstalk(CT)p.rformances were measured as IL(bar)=-0.2 dB,CT(bar)=-15 dB,IL(cross)=-1.5 dB,and CT(cross)=-15 ***,the thermal tuning efficiency of the fabricated device is as high as1.23 nm/mW.

关键词： p.N Comp.ct silicon thermo-optic switch based on p.otonic crystal nanobeam cavities submilliwatt mode SOI

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地月空间信息网络链路分配算法研究

深空探测学报 2019年第6期6卷 553-560页

作者：刘冰怡王璐琦郭薇朱维各上海交通大学区域光纤通信网与新型光通信系统国家重点实验室上海200240 上海卫星工程研究所上海200240

在设计拓扑时,如何分配每颗卫星上有限的通信终端建立通信链路,构建一个性能良好的网络拓扑,成为了一个重要的研究问题。以平均月球中继卫星到地面站路径距离最小为优化目标,以卫星携带的通信终端数目、月球中继卫星与地面站的连通性为... 详细信息

在设计拓扑时,如何分配每颗卫星上有限的通信终端建立通信链路,构建一个性能良好的网络拓扑,成为了一个重要的研究问题。以平均月球中继卫星到地面站路径距离最小为优化目标,以卫星携带的通信终端数目、月球中继卫星与地面站的连通性为约束条件,提出了基于竞争决策思想的链路分配算法(Link Assignment Algorithm based on Comp.titive Decision, LAA-CD)和基于模拟退火法的链路分配算法(Link Assignment Algorithm based on Simulated Annealing,LAA-SA),并与贪婪算法进行对比。仿真结果表明,LAA-CD和LAA-SA算法下所得拓扑的平均月球中继卫星到地面站距离均小于贪婪算法,且LAA-CD算法能够有效降低算法的时间复杂度。进一步对比了两种星座,发现相比拉格朗日轨道卫星星座,在月球极轨道卫星星座下所得拓扑具有更小的平均距离,为空间信息网络分配提供技术支撑。

关键词：地月空间信息网络中继卫星地面站通信终端拓扑设计