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45th European Conference on optical communication, ECOC 2019

作者： Fu, Yan Kong, Deming Xin, Haiyun Jia, Shi Zhang, Kuo Bi, Meihua Hu, Weisheng Hu, Hao State Key lab of Advanced Optical Communication Systems and Networks Shanghai Jiao Tong University Shanghai China DTU Fotonik Technical University of Denmark Kgs. Lyngby Denmark School of Communication Engineering Hangzhou Dianzi University Hangzhou Zhejiang China

ISBN: (纸本)9781839531859

Computationally efficient piecewise linear (PWL) equalizer is, for the first time, proposed to compensate amplitude-dependent skews caused by DML chirp and chromatic dispersion. 56 Gbit/s PAM-4 signals in C-band are respectively enabled for 40 km and 60 km transmission below the HD-FEC and SD-FEC. © 2019 Institution of Engineering and Technology. All rights reserved.

关键词： Pulse amplitude modulation

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Directly wireless communication of human minds via non-invasive brain-computer-metasurface platform

arXiv

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arXiv 2022年

作者： Ma, Qian Gao, Wei Xiao, Qiang Ding, Lingsong Gao, Tianyi Zhou, Yajun Gao, Xinxin Yan, Tao Liu, Che Gu, Ze Kong, Xianghong Abbasi, Qammer H. Li, Lianlin Qiu, Cheng-Wei Li, Yuanqing Cui, Tie Jun Institute of Electromagnetic Space Southeast University Nanjing210096 China School of Automation Science and Engineering South China University of Technology Guangzhou510641 China State Key Laboratory of Millimeter Wave Southeast University Nanjing210096 China Center of Intelligent Metamaterials Pazhou Laboratory Guangzhou510330 China Research Center for Brain-Computer Interface Pazhou Lab Guangzhou510330 China Department of Electrical and Computer Engineering National University of Singapore Singapore Singapore University of Glasgow James Watt School of Engineering GlasgowG12 8QQ United Kingdom State Key Laboratory of Advanced Optical Communication Systems and Networks Department of Electronics Peking University Beijing100871 China

Brain-computer interfaces (BCIs), invasive or non-invasive, have projected unparalleled vision and promise for assisting patients in need to better their interaction with the surroundings. Inspired by the BCI-based rehabilitation technologies for nerve-system impairments and amputation, we propose an electromagnetic brain-computer-metasurface (EBCM) paradigm, regulated by human's cognition by brain signals directly and non-invasively. We experimentally show that our EBCM platform can translate human's mind from evoked potentials of P300-based electroencephalography to digital coding information in the electromagnetic domain non-invasively, which can be further processed and transported by an information metasurface in automated and wireless fashions. Directly wireless communications of the human minds are performed between two EBCM operators with accurate text transmissions. Moreover, several other proof-of-concept mind-control schemes are presented using the same EBCM platform, exhibiting flexibly-customized capabilities of information processing and synthesis like visual-beam scanning, wave modulations, and pattern encoding. © 2022, CC BY.

关键词： Electrophysiology

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20Gb/s PAM-4 Generation by Modulating a Single-Drive Push-Pull Silicon Dual-Ring Modulator with 3Vpp

20Gb/s PAM-4 Generation by Modulating a Single-Drive Push-Pu...

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Asia communications and Photonics Conference and Exhibition (ACP)

作者： Dongsheng Zheng Ciyuan Qiu State Key Lab of Advanced Optical Communication Systems and Networks Shanghai Jiao Tong University Shanghai China

We investigate the enhanced modulation efficiency of a silicon dual-ring modulator. Benefiting from single-drive push-pull configuration, 4-level pulse amplitude modulation is experimentally demonstrated at a bit rate... 详细信息

ISBN: (纸本)9781943580705

关键词： Erbium doped fiber amplifiers Modulation Modulators Ring resonators Signal transmission Silicon modulators

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Disentangled makeup transfer with generative adversarial network

arXiv

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arXiv 2019年

作者： Zhang, Honglun Tian, Jidong Chen, Wenqing He, Hao Jin, Yaohui MoE Key Lab of Artificial Intelligence AI Institute Shanghai Jiao Tong University State Key Lab of Advanced Optical Communication System and Network

Facial makeup transfer is a widely-used technology that aims to transfer the makeup style from a reference face image to a non-makeup face. Existing literature leverage the adversarial loss so that the generated faces are of high quality and realistic as real ones, but are only able to produce fixed outputs. Inspired by recent advances in disentangled representation, in this paper we propose DMT (Disentangled Makeup Transfer), a unified generative adversarial network to achieve different scenarios of makeup transfer. Our model contains an identity encoder as well as a makeup encoder to disentangle the personal identity and the makeup style for arbitrary face images. Based on the outputs of the two encoders, a decoder is employed to reconstruct the original faces. We also apply a discriminator to distinguish real faces from fake ones. As a result, our model can not only transfer the makeup styles from one or more reference face images to a non-makeup face with controllable strength, but also produce various outputs with styles sampled from a prior distribution. Extensive experiments demonstrate that our model is superior to existing literature by generating high-quality results for different scenarios of makeup transfer. Copyright © 2019, The Authors. All rights reserved.

关键词： Generative adversarial networks

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All-optical Mach-Zehnder Switch on a Graphene-on-silicon Nitride Chip

All-optical Mach-Zehnder Switch on a Graphene-on-silicon Nit...

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Progress in Electromagnetics Research Symposium - Fall (PIERS - FALL)

作者： C. Zhang T. Guo C. Y. Qiu State Key Lab of Advanced Optical Communication Systems and Networks Department of Electronic Engineering Shanghai Jiao Tong University Shanghai China

ISBN: (数字)9781728153049

ISBN: (纸本)9781728153056

All-optical switches play an important role in optical cross-connects and optical communication networks. With the advantage of light-controlling-light, all-optical switches could be used for achieving an efficient light signal processing, which avoids the conversion between optical signals and electronic signals. Silicon nitride (Si 3 N 4 ) is an ideal candidate for all-optical devices with a low optical loss, since Si 3 N 4 has a large bandgap of ~ 5eV and doesn't have two- photon absorption (TPA) effect as well as the free-carrier absorption (FCA) effect in the C-band. However, Si 3 N 4 has a weak thermooptic effect, and thus it is still hard to implement an all-optical high-efficient Si 3 N 4 switch based on the thermo-optic effect. In this paper, an all-optical Mach- Zehnder switch on graphene-on-Si 3 N 4 chip is proposed and experimentally demonstrated. In our device, the Mach-Zehnder switch is based on the Si 3 N 4 waveguide. And the graphene overlies one of the two arms of the switch. Then, the graphene can absorb the pump light and convert the light power into heat, which in turn changes the refractive index of the Si 3 N 4 underneath based on the thermo-optic effect. In this case, for the probe signal light, the phase delay of the arm is tuned and optical switching is then implemented. Note that, in this process, the weakness of the thermo-optic effect and thermal conductivity of Si 3 N 4 is compensated by graphene due to its high thermal conductivity. In the experimental demonstration, all optical switching with an extinction ratio of 15 dB is demonstrated while the device footprint is ~ 0.24 mm 2 . Furthermore, a tuning efficiency of 0.0112 π/mW is implemented with a switching power of 89.1 mW, which is much higher than many other thermo-optic switches. Note that, the proposed device configuration may provide a simple and effective way to realize all-optical high-efficient light control.

关键词： optical switches optical waveguides Graphene optical pumping optical refraction optical variables control

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Carrier Regeneration in Kramers Kronig System Enabled by Injection Locking for optical Interconnection

Carrier Regeneration in Kramers Kronig System Enabled by Inj...

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IEEE Photonics Conference (IPC)

作者： Xiaoling Zhang Longsheng Li Chen Chen Wei Jin Chongfu Zhang Kun Qiu School of Information and Communication Engineering Zhongshan Institute University of Electronic Science and Technology of China Chengdu China School of Electronic and Information University of Electronic Science and Technology of China Zhongshan Institute Zhongshan China State Key lab of Advanced Optical Communication Systems and Networks Shanghai Jiao Tong University Shanghai China School of Microelectronics and Communication Engineering Chongqing University Chongqing China

We experimentally demonstrate a carrier regeneration technique based on injection locking for optical intra-datacenter interconnection. 56-Gb/s optical SSB-PAM-4 signal with -2-dB power ratio of weak pilot tone to sig... 详细信息

ISBN: (数字)9781728158914

ISBN: (纸本)9781728158921

关键词： optical fibers optical receivers optical filters optical transmitters Amplitude modulation optical modulation

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Multi-Agent Genetic Algorithm for Sparse optical Phased Array Optimization

Multi-Agent Genetic Algorithm for Sparse Optical Phased Arra...

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Asia communications and Photonics Conference

作者： Chuxin Liu Weihan Xu Linjie Zhou Liangjun Lu Jianping Chen Shanghai Institute for Advanced Communication and Data Science Shanghai Key Lab of Navigation and Location Services State Key Laboratory of Advanced Optical Communication Systems and Networks Department of Electronic Engineering SJTU Shanghai China

We propose a multi-agent Genetic algorithm to suppress the peak sidelobe ratio (PSLR) in the OPA far-field diffraction pattern. The optimized 128-channel sparse array achieves beam-steering range of ±60° wit... 详细信息

ISBN: (纸本)9781943580705

关键词： Far field diffraction Free space optics Genetic algorithms optical coherence tomography Phased arrays Ptychography

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50-Gb/s TDM-PON based on 10G-class devices by optics-simplified DSP

50-Gb/s TDM-PON based on 10G-class devices by optics-simplif...

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optical Fiber communication Conference, OFC 2018

作者： Xue, Lei Yi, Lilin Li, Peixuan Hu, Weisheng State Key Lab of Advanced Optical Communication Systems and Networks Shanghai Jiao Tong University Shanghai200240 China

We demonstrate a 50-Gb/s PAM-4 TDM-PON over 25-km SSMF based on DML and APD with 6-GHz 3-dB bandwidth in O-band. Dispersion-supported optical equalization is used to reduce the complexity of FFE and Volterra algorithm... 详细信息

ISBN: (纸本)9781943580385

关键词： Passive optical networks

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56 Gbps IM/DD PON based on 10G-class optical devices with 29 dB loss budget enabled by machine learning

56 Gbps IM/DD PON based on 10G-class optical devices with 29...

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optical Fiber communication Conference, OFC 2018

作者： Li, Peixuan Yi, Lilin Xue, Lei Hu, Weisheng State Key Lab of Advanced Optical Communication Systems and Networks Shanghai Jiao Tong University Shanghai200240 China

We demonstrate 56Gbps PAM4 PON transmission over 25km SSMF using 10G-class DML and APD with 6 GHz 3-dB bandwidth. 29 dB loss budget is achieved by a novel equalization technique based on convolutional neural network. ... 详细信息

ISBN: (纸本)9781943580385

关键词： Budget control

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Simplified signal processing for high-speed PON

Simplified signal processing for high-speed PON

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Conference on Lasers and Electro-Optics/Pacific Rim, CLEOPR 2018

作者： Yi, Lilin Xue, Lei Hu, Weisheng State Key Lab of Advanced Optical Communication Systems and Networks Shanghai Institute for Advanced Communication and Data Science Shanghai Jiao Tong University Shanghai200240 China

We have experimentally demonstrated symmetric 425 Gb/s TWDM-PON and 50 Gb/s TDM-PON based on 10G class devices. Low-cost DMLs are used as transmitter and simple optical signal process is used for bandwidth equalizatio... 详细信息

ISBN: (纸本)9781943580453

关键词： Passive optical networks

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