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Joint modulation format identification and OSNR monitoring based on Stokes vector distribution features for digital coherent optical receivers

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Chinese Optics Letters 2024年第5期22卷 22-28页

作者：蒲正宇蒋林闫连山易安林何海军潘炜罗斌 Center for Information Photonics&Communications School of Information Science and TechnologySouthwest Jiaotong UniversityChengdu 611756China

For joint modulation format identification(MFI)and optical signal-to-noise ratio(OSNR)monitoring,a simple and intelligent optical communication performance monitoring method is proposed,and the feasibility is demonstrated by digital coherent optical communication *** experiment results show that for all modulation formats,including 28 GBaud polarization division multiplexing(PDM)QPSK/8-QAM/16-QAM/64-QAM,100%MFI accuracies are achieved even at OSNR values lower than the corresponding theoretical 20%forward error correction limit,as well as the high accuracies for OSNR ***,the proposed scheme has a reasonable monitoring level when chromatic dispersion and fiber nonlinear effects are varied.

关键词： coherent communication optical performance monitoring deep neural network

A Two-color Single-molecule Sequencing Platform and Its Clinical Applications

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Genomics, Proteomics & Bioinformatics 2024年第1期22卷 169-175页

作者： Fang Chen bin Liu Meirong Chen Zefei Jiang Zhiliang Zhou Ping Wu Meng Zhang Huan Jin Linsen Li Liuyan Lu Huan Shang lei Liu weiyue Chen Jianfeng Xu Ruitao Sun Guangming Wang Jiao Zheng Jifang Qi Bo yang Lidong Zeng yan Li Hui Lv Nannan Zhao Wen Wang Jinsen Cai Yongfeng Liu weiwei luo Juan Zhang yanhua Zhang Jicai Fan Haitao Dan Xuesen He wei Huang lei Sun Qin yan GeneMind Biosciences Co. Ltd.Shenzhen 518000China

DNA sequencers have become increasingly important research and diagnostic tools over the past 20 *** this study,we developed a single-molecule desktop sequencer,GenoCare 1600(GenoCare),which utilizes amplification-free library preparation and two-color sequencing-by-synthesis chemistry,making it more user-friendly compared with previous single-molecule sequencing platforms for clinical *** the GenoCare platform,we sequenced an Escherichia coli standard sample and achieved a consensus accuracy exceeding 99.99%.We also evaluated the sequencing performance of this platform in microbial mixtures and coronavirus disease 2019(COVID-19)samples from throat *** findings indicate that the GenoCare platform allows for microbial quantitation,sensitive identification of the severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)virus,and accurate detection of virus mutations,as confirmed by Sanger sequencing,demonstrating its remarkable potential in clinical application.

关键词： GenoCare Single-molecule sequencing SARS-CoV-2 Microbial quantitation Variant detection

The Optimization of Radio over Fiber Link by Proper Link Gain Control

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China Communications 2014年第5期11卷 31-36页

作者： LI Zonglei yan lianshan pan wei luo bin Center for Information Photonics & Communications School of Information Science & Technology Southwest Jiaotong UniversityChengdu 610031 Sichuan Province E R. China

we demonstrate the adjustability of optimal input power(OIP) of the radio over fiber(RoF) link by proper link gain control in the central unit(CU) and remote antenna unit(RAU).The experiment results show that the reading and writing distance(RWD)of the radio frequency identification(RFID)service and the throughput of the WiFi service have a max increase of 3cm and 6.975Mbit/s respectively when the OIP value equals to output power of commercial products,compared with OIP value with 5-dBm right/left shift to the output power.

关键词： radio over fiber optimal input power RFID WiFi error vector magnitude

Simultaneous unidirectional and bidirectional chaos-based optical communication using hybrid coupling semiconductor lasers

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Science China(Information Sciences) 2014年第1期57卷 280-290页

作者： JIANG Ning pan wei luo bin yan lianshan XIANG ShuiYing Center for Information Photonics and Communications School of Information Science and TechnologySouthwest Jiaotong University

A simultaneous unidirectional and bidirectional chaos-based optical communication scheme based on a hybrid coupling semiconductor laser system that consists of one center semiconductor laser(CSL)and multiple side semiconductor lasers(SSLs)is proposed *** this scheme,the SSLs oriented in a linear chain mutually couple with the adjacent SSLs and they are subjected to identical unidirectional injections from the CSL which is a chaotic external cavity semiconductor *** theoretically analyze the conditions for diferent types of chaos synchronization based on the symmetry operation mechanism and injection-locking mechanism,and numerically investigate the influences of operation parameters,parameter mismatch robustness,chaos pass filtering efects and communication performance of the hybrid coupling semiconductor laser *** simulation results demonstrate that with proper selection of the unidirectional and mutual coupling conditions,the SSLs can synchronize with each other isochronally and simultaneously synchronize to the CSL completely or laggardly,which enables the proposed system to achieve a unidirectional broadcasting communication from the CSL to the SSLs and a bidirectional communication among the SSLs *** proposed scheme is beneficial to the implementation of optical chaos communication networks.

关键词： semiconductor laser optical communication chaos synchronization chaos communication net-works hybrid coupling

Photonic generation of microwave signals with tunabilities

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Chinese Science Bulletin 2014年第22期59卷 2672-2683页

作者： Hengyun Jiang lianshan yan Jia Ye wei pan bin luo Xihua Zou Center for Information Photonics and Communications School of Information Science and Technology Southwest Jiaotong University

Microwave photonic signal generation schemes based on the frequency to time mapping and external modulation are *** concentrate on those configurations that can provide tunability of frequency,phase of signal,modulati... 详细信息

关键词：微波信号光子产生可调频率调制格式微波光子时间映射 2PSK 2FSK

Misalignments among stacked layers of metamaterial terahertz absorbers

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Frontiers of Optoelectronics 2014年第1期7卷 53-58页

作者： Yinghui GUO lianshan yan wei pan bin luo Xiantao ZHANG Xiangang luo Center for Information Photonics & Communications School of Information Science & Technology Southwest Jiaotong University Chengdu 610031 China State Key Lab of Optical Technology for Microfabrication Institute of Optics and Electronics Chinese Academy of Sciences Chengdu 610029 China

Misalignment among stacked layers of absor- bers is inevitable in practice. Adverse effects induced by this undesired factor was investigated and analyzed in this paper. The absorption responses of thin terahertz metama- terial （MM） absorber with different degree of misalign- ment were simulated by finite-difference time-domain （FDTD） method under both transverse magnetic （TM） and transverse electric （TE） polarization. Results show that slight misalignment deteriorates absorption response due to the decreased spatial resolution. The analyses are given in terms of the magnetic field distribution in the cross section. In addition, the depravation is changed with polarization, which depends on the direction of excursion.

关键词： metamaterials (MMs) terahertz absorber,misalignment subwavelength structure

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基于水泵负压输送的切膜排杂装置设计与试验

吉林大学学报（工学版） 2024年第1期54卷 268-280页

作者：胡斌袁成林解彦宇郭孟宇罗昕潘峰李俊伟石河子大学机械电气工程学院新疆石河子832000 现代农业机械兵团重点实验室新疆石河子832003

针对机收膜杂混料因相互缠绕难以分离回收的技术问题,依据机收膜杂混料主成分悬浮特性、形体尺寸和剪切特性的差异,提出在水泵负压输送作用下,旋流沉降和切膜过滤排杂新方法,创新设计切膜排杂装置,理论分析切膜排杂机构的力学特性,搭建... 详细信息

针对机收膜杂混料因相互缠绕难以分离回收的技术问题,依据机收膜杂混料主成分悬浮特性、形体尺寸和剪切特性的差异,提出在水泵负压输送作用下,旋流沉降和切膜过滤排杂新方法,创新设计切膜排杂装置,理论分析切膜排杂机构的力学特性,搭建机收膜杂混料切膜排杂试验装置,开展三因素三水平二次回归正交试验,建立了多目标响应面回归模型,并进行优化与试验验证。结果表明:碎膜合格率影响的主次因素顺序为:动刀转速、定刀缝隙宽度、动刀壁半径;碎膜含杂率影响的主次因素顺序为:动刀转速、动刀壁半径、定刀缝隙宽度。当动刀转速为954 r/min、定刀缝隙宽度为2.8 mm、动刀壁半径为80 mm时,碎膜合格率为88.80%,碎膜含杂率为7.51%,优化试验结果与模型预测值相对误差小于5%。本文研究可为机收膜杂混料的切碎分离方法及装备研究提供参考。

关键词：农业机械机收膜杂混料切碎分离负压输送过滤排杂

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Flexible polarization demultiplexing method based on an adaptive process noise covariance Kalman filter

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Chinese Optics Letters 2018年第6期16卷 19-23页

作者： Jun Ge lianshan yan Anlin Yi yan pan Lin Jiang Liangliang Dai wei pan bin luo Center for Information Photonics ＆ Communications School of Information Science and Technology Southwest Jiaotong University Chengdu 610031 China

A flexible polarization demultiplexing method based on an adaptive Kalman filter（AKF） is proposed in which the process noise covariance has been estimated adaptively. The proposed method may significantly improve the adaptive capability of an extended Kalman filter（EKF） by adaptively estimating the unknown process noise covariance. Compared to the conventional EKF, the proposed method can avoid the tedious and time consuming parameter-by-parameter tuning operations. The effectiveness of this method is confirmed experimentally in 128 Gb/s 16 QAM polarization-division-multiplexing（PDM） coherent optical transmission systems. The results illustrate that our proposed AKF has a better tracking accuracy and a faster convergence（about 4 times quicker）compared to a conventional algorithm with optimal process noise covariance.

关键词： EKF PDM Flexible polarization demultiplexing method based on an adaptive process noise covariance Kalman filter QAM

Incidence and prognosis of olfactory and gustatory dysfunctions related to SARS-CoV-2 Omicron strain infection in China:A national multicenter survey of 35,566 individuals

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World Journal of Otorhinolaryngology-Head and Neck Surgery 2024年第2期10卷 113-120页

作者： Meng-Fan Liu Rui-Xia Ma Xian-Bao Cao Hua Zhang Shui-Hong Zhou wei-Hong Jiang yan Jiang Jing-Wu Sun Qin-Tai yang Xue-Zhong Li Ya-Nan Sun Li Shi Min Wang Xi-Cheng Song Fu-Quan Chen Xiao-Shu Zhang Hong-Quan wei Shao-Qing Yu Dong-Dong Zhu luo Ba Zhi-wei Cao Xu-Ping Xiao Xin wei Zhi-Hong Lin Feng-Hong Chen Chun-Guang Shan Guang-Ke Wang Jing Ye Shen-Hong Qu Chang-Qing Zhao Zhen-Lin Wang Hua-bin Li Feng Liu Xiao-Bo Cui Sheng-Nan Ye Zheng Liu Yu Xu Xiao Cai wei Huang Ru-Xin Zhang Yu-Lin Zhao Guo-Dong Yu Guang-Gang Shi Mei-Ping Lu yang Shen Yu-Tong Zhao Jia-Hong Pei Shao-bing Xie Long-Gang Yu Ye-Hai Liu Shao-wei Gu Yu-Cheng yang lei Cheng Jian-Feng liu Graduate School of Beijing University of Chinese Medicine BeijingChina Department of Otorhinolaryngology Head and Neck Surgery China-Japan Friendship HospitalBeijingChina Department of Otorhinolaryngology Head and Neck Surgery The First People's Hospital of YinchuanYinchuanChina Department of Otorhinolaryngology The First People's Hospital of Yunnan ProvinceKunmingChina Department of Otorhinolaryngology The First Affiliated Hospital of Xinjiang Medical UniversityUrumqiChina Department of Otorhinolaryngology Head and Neck Surgery The First Affiliated Hospital of Zhejiang University School of MedicineHangzhouChina Department of Otorhinolaryngology Head and Neck Surgery Xiangya Hospital Central South UniversityChangshaChina Department of Otorhinolaryngology Head and Neck Surgery The Affiliated Hospital of Qingdao UniversityQingdaoChina Department of Otorhinolaryngology Head and Neck Surgery The First Affiliated Hospital of USTCHefeiChina Department of Otorhinolaryngology Head and Neck Surgery The Third Affiliated Hospital of Sun Yat-sen UniversityGuangzhouChina Department of Otorhinolaryngology Head and Neck Surgery Qilu Hospital of Shandong UniversityJinanChina Department of Otorhinolaryngology Head and Neck Surgery The Second Affiliated Hospital of Harbin Medical UniversityHarbinChina Department of Otolaryngology The Second Hospital of Shandong UniversityShandong UniversityJinanChina Department of Otorhinolaryngology Head and Neck Surgery Peking University People's HospitalBeijingChina Department of Otorhinolaryngology Head and Neck Surgery Yantai Yuhuangding HospitalQingdao UniversityYantaiChina Department of Otorhinolaryngology Head and Neck Surgery Xijing HospitalThe Fourth Military Medical UniversityXi'anChina Gansu Provincial Center for Disease Control and Prevention LanzhouChina Department of Otorhinolaryngology Head and Neck Surgery The First Affiliated Hospital of China Medical UniversityShenyangChina Department of Otorhinolaryngology Head and Neck Surgery Tongji Hospit

Objective:This cross-sectional study aimed to determine the epidemiology of olfactory and gustatory dysfunctions related to COVID-19 in ***:This study was conducted by 45 tertiary Grade-A hospitals in *** and offline questionnaire data were obtained from patients infected with COVID-19 between December 28,2022,and February 21,*** collected information included basic demographics,medical history,smoking and drinking history,vaccination history,changes in olfactory and gustatory functions before and after infection,and other postinfection symptoms,as well as the duration and improvement status of olfactory and gustatory ***:Complete questionnaires were obtained from 35,566 *** overall incidence of olfactory and taste dysfunction was 67.75%.Being female or being a cigarette smoker increased the likelihood of developing olfactory and taste *** received four doses of the vaccine or having good oral health or being a alcohol drinker decreased the risk of such *** infection,the average olfactory and taste VAS scores were 8.41 and 8.51,respectively;after infection,they decreased to 3.69 and 4.29 and recovered to 5.83 and 6.55 by the time of the *** median duration of dysosmia and dysgeusia was 15 and 12 days,respectively,with 0.5%of patients having symptoms lasting for more than 28 *** overall self-reported improvement rate was 59.16%.Recovery was higher in males,never smokers,those who received two or three vaccine doses,and those that had never experienced dental health issues,or chronic accompanying ***:The incidence of dysosmia and dysgeusia following infection with the SARS-CoV-2 virus is high in *** and prognosis are influenced by several factors,including sex,SARS-CoV-2 vaccination,history of head-facial trauma,nasal and oral health status,smoking and drinking history,and the persistence of accompanying symptoms.

关键词： epidemiologic studies incidence olfactory disorders prognosis SARS-CoV-2 taste disorders