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Optical Fiber Communication Conference, OFC 2016

作者： Gao, Wei Li, Xin Lu, Liangjun Chen, Jianping Zhou, Linjie State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Key Lab of Navigation and Location Services Shanghai Institute for Advanced Communication and Data Science Department of Electronic Engineering Shanghai Jiao Tong University Shanghai200240 China SJTU-Pinghu Institute of Intelligent Optoelectronics Pinghu314200 China

We demonstrate a 32×32 optical switch on a dual-layer Si3N4-on-SOI platform with low fiber-to-fiber insertion loss (9.61~14.51 dB), low crosstalk (~-35 dB), broad 3-dB bandwidth (~57 nm) and low power consumption...

ISBN: (纸本)9781943580071

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Electro-optical phase-locked loop for hybrid integrated external cavity laser

Electro-optical phase-locked loop for hybrid integrated exte...

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2023 Optical Fiber Communications Conference and Exhibition, OFC 2023

作者： Liu, Chuxin Guo, Yuyao Xu, Ruiyang Lu, Liangjun Chen, Jianping Zhou, Linjie Shanghai Jiao Tong University State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Key Lab of Navigation and Location Services Shanghai Institute for Advanced Communication and Data Science Department of Electronic Engineering Shanghai200240 China SJTU-Pinghu Institute of Intelligent Optoelectronics Pinghu314200 China

We implement an analog EO-PLL for a III/V-Si3N4 hybrid integrated ECL to generate a highly-linear FMCW signal over multiple wavelengths. The ranging resolution is improved from 5 m to 35 cm for a 100-m target. © ... 详细信息

ISBN: (纸本)9781957171180

关键词： Phase locked loops

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Butler Matrix Enabled Multi-Beam Optical Phased Array for Two-Dimensional Beam-Steering 27

Butler Matrix Enabled Multi-Beam Optical Phased Array for Tw...

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27th OptoElectronics and Communications Conference/International Conference on Photonics in Switching and Computing, OECC/PSC 2022

作者： Zhou, Zuoyu Xu, Weihan Li, Xinhang Lu, Liangjun Chen, Jianping Zhou, Linjie Shanghai Institute for Advanced Communication and Data Science State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Jiao Tong University Shanghai Key Lab of Navigation and Location Services Department of Electronic Engineering Shanghai200240 China SJTU-Pinghu Institute of Intelligent Optoelectronics Pinghu314200 China

We demonstrate a multi-beam optical phased array based on a 4×4 Butler matrix. The device shows the capability of two-dimensional multi-beam steering with a pm 30^{circ}×8^{circ} field-of-view through a shar... 详细信息

ISBN: (数字)9784885523366

ISBN: (纸本)9784885523366

关键词： Beamforming

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Bandwidth Enhancement of Silicon Thermo-Optic Phase Shifter with Electronic-Photonic Co-Design

Bandwidth Enhancement of Silicon Thermo-Optic Phase Shifter ...

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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： Han, keyi Lu, Liangjun Li, Xin Liu, Chuxin Xu, Weihan Guo, Yuyao Chen, Jianping Zhou, Linjie State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Key Lab of Navigation and Location Services Shanghai Institute for Advanced Communication and Data Science Department of Electronic Engineering Shanghai Jiao Tong University Shanghai200240 China SJTU-Pinghu Institute of Intelligent Optoelectronics Pinghu314200 China

Based on a resistance-capacitance equalizer, we demonstrated a silicon thermo-optic phase shifter with a rise time of 2.3 µs and a modulation bandwidth of 250 kHz, offering 10 times enhancement over the original ... 详细信息

ISBN: (纸本)9781957171395

关键词： Silicon photonics

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Fully Integrated Solid-State LiDAR Transmitter on a MultiLayer Silicon-Nitride-on-Silicon Photonic Platform

Fully Integrated Solid-State LiDAR Transmitter on a MultiLay...

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Optical Fiber Communication Conference, OFC 2016

作者： Xu, Weihan Guo, Yuyao Li, Xinhang Liu, Chuxin Lu, Liangjun Chen, Jianping Zhou, Linjie State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Key Lab of Navigation and Location Services Shanghai Institute for Advanced Communication and Data Science Department of Electronic Engineering Shanghai Jiao Tong University Shanghai200240 China SJTU-Pinghu Institute of Intelligent Optoelectronics Pinghu314200 China

We demonstrated a LiDAR transmitter incorporating both a hybrid-integrated tunable external cavity laser and a high-resolution 2-D optical phased array beam-steerer on a tri-layer silicon-nitride-on-silicon photonic p...

ISBN: (纸本)9781943580071

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Sampling Topic Representative Users by Integrating Node Degree and Edge Weight

Sampling Topic Representative Users by Integrating Node Degr...

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IEEE International Conference on data Science in Cyberspace (DSC)

作者： Jiangwen Wang Zhijie Ban Inner Mongolia A.R. Key Laboratory of Data Mining and Knowledge Engineering College of Computer Science Inner Mongolia University Huhhot China

ISBN: (数字)9781728195582

ISBN: (纸本)9781728195599

Finding a subset of users to statistically represent the original social network in terms of attributes has received a lot of attention recently. The existing literature had proved that the problem is NP-Hard and proposed some sampling models, but representative degrees aren't systematically studied. Taking node degree and edge weight into account, we present a topic sampling model for the whole social network in this paper. Firstly, by statistically calculating node degrees for one real dataset, we find that one node is more likely to be a representative user if its degree is high. We then give some definitions about representative degrees. Based on statistical stratified sample, we finally give a sampling model of topic representative users who are from most or all attribute groups in the network. Experimental results show that our algorithm significantly outperforms other six baseline methods and is also effective in terms of time complexity.

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A novel distance matric: Generalized relative entropy

arXiv

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arXiv 2017年

作者： Liu, Shuai Lu, Mengye Liu, Gaocheng Pan, Zheng College of Computer Science Inner Mongolia University Hohhot China Inner Mongolia Key Laboratory of Data Mining and Knowledge Engineering Hohhot China

Information entropy and its extension, which are important generalization of entropy, have been applied in many research domains today. In this paper, a novel generalized relative entropy is constructed to avoid some defects of traditional relative entropy. We presented the structure of generalized relative entropy after the discussion of defects in relative entropy. Moreover, some properties of the provided generalized relative entropy is presented and proved. The provided generalized relative entropy is proved to have a finite range and is a finite distance metric. Copyright © 2017, The Authors. All rights reserved.

关键词： Defects

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Research on Government Information Sharing Model Using Blockchain Technology

Research on Government Information Sharing Model Using Block...

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IEEE International Symposium on Information (IT) in Medicine and Education, ITME

作者： Yiwei Zhang Sanhong Deng Yue Zhang Jia Kong School of Information Management Nanjing University Jiangsu Key Laboratory of Data Engineering and Knowledge Service Nanjing China Nanjing University Nanjing China

Research Purpose: The distributed, traceable and security of blockchain technology are applicable to the construction of new government information resource models, which could eliminate the barn effect and trust in government information sharing, as well as promoting the transformation of government affairs from management to service, it is also of great significance to the sharing of government information and construction of service-oriented e-government. Propose Methods: By analyzing the current problems of government information sharing, combined with literature research, this paper proposes the theoretical framework and advantages of blockchain technology applied to government information management and sharing, expounds the blockchain-based solution, it also constructs a government information sharing model based on blockchain, and gives implementation strategies at the technical and management levels. Results and Conclusion: The government information sharing model based on the blockchain solution and the transparency of government information can be used as a research framework for information interaction analysis between the government and users. It can also promote the construction and development of information sharing for Chinese government, as well as providing unified information sharing solution at the departmental and regional levels for e-government.

关键词： Blockchain Information management Security Electronic government Information services data engineering

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Automatic collection of the parallel corpus with little prior knowledge

Lecture Notes in Computer Science (including subseries Lectu...

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Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 2014年 8801卷 95-106页

作者： Ma, Shutian Zhang, Chengzhi Department of Information Management Nanjing University of Science and Technology Nanjing210094 China Jiangsu Key Laboratory of Data Engineering and Knowledge Service Nanjing University Nanjing210093 China

As an important resource for machine translation and cross-language information retrieval, collecting large-scale parallel corpus has been paid wide attention. With the development of the Internet, researchers begin to mine the parallel corpora from the multilingual websites. They use some prior knowledge like ad hoc heuristics or calculate the similarity of the webpages structure and content to find the bilingual webpages. This paper presents a method that uses the search engine and little prior knowledge about the URL patterns to get the bilingual websites from the Internet. The method is fast for its low time cost and there is no need for large-scale computation on URL pattern matching. We have collected 88 915 candidate parallel Chinese-English webpages, which average accuracy is around 90.8%. During the evaluation, the true bilingual websites that we found have high similar html structure and good quality translations. © Springer International Publishing Switzerland 2014.

关键词： Websites

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Access control of blockchain based on dual-policy attribute-based encryption

Access control of blockchain based on dual-policy attribute-...

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IEEE International Conference on High Performance Computing and Communications (HPCC)

作者： Daojun Han Jinyu Chen Lei Zhang Yatian Shen Xueheng Wang Yihua Gao Institute of Data and Knowledge Engineering School of Computer and Information Engineering Henan University Kaifeng China Henan Key Laboratory of Big Data Analysis and Processing School of Computer and Information Engineering Henan University Kaifeng China

In scenarios where multiple parties such as the Internet of Things and Supply Chains participate in data sharing and computing, when accessing data, users not only need to accept the forward access control of the data owner, but also needs to perform reverse access control on the data, so as to realize two-way access control. In the traditional blockchain, all users can participate in accounting and view transaction data, and only protect user privacy through “pseudo-anonymity”. The access rights of different users cannot be distinguished, which cannot meet the user's two-way access control needs. However, most of the existing blockchain-based access control schemes are one-way access control, which cannot meet the needs of users for two-way access control in scenarios such as the Internet of Things and Supply Chains. Therefore, it is particularly important to design a two-way access control mechanism suitable for application in the blockchain. On this basis, this paper proposes a dual strategy attribute-based encryption (ABE) scheme for distributed outsourcing. This scheme combines two existing schemes, ciphertext-policy ABE and key-policy ABE, and proposes two access structures and a structure of attribute sets. The primary access structure and the secondary attributes are stored in the ciphertext, and the secondary access structure and the primary attributes are stored in the user's private key. Only when the primary attribute set satisfies the primary access structure and the secondary attribute set satisfies the secondary access structure can the user unlock the ciphertext. This scheme has no single authorization center; instead, blockchain nodes jointly participate in authorization. In addition, the proposed scheme outsources the encryption and decryption of the ciphertext to blockchain nodes to reduce the computing pressure on users and can adapt to the decentralized environment of the blockchain and provide users with two-way access control services. Finally

关键词： Authorization data privacy High performance computing Conferences Supply chains Blockchain Permission

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