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For a good cause:a commemorative editorial on the 10th anniversary of Photonics Research

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光子学研究:英文版 2023年第8期11卷 I0002-I0002页

作者： zhiping(JAMES)zhou Photonics Research Peking University

Congratulations on the 10th anniversary of Photonics Research!I vividly remember the days when leaders from Optica(formerly OSA)and Chinese Laser Press met in China to negotiate and sign an agreement on a joint *** that time,I was thinking very hard to come up with a good name(as many good names were already taken by numerous optics and photonics related journals),defining the scope and topics for the new journal,recruiting the inaugural associate editors,reaching out to potential authors who were willing to publish in a journal without an impact factor,and laying out a strategy for working together with other related journals.

关键词： journal optics remember

Demonstration of an on-chip TE-pass polarizer using a silicon hybrid plasmonic grating

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Photonics Research 2019年第3期7卷 289-293页

作者： BOWEN BAI FENGHE YANG zhiping zhou State Key Laboratory of Advanced Optical Communication Systems and Networks School of Electronics Engineering and Computer Science Peking University Peking University Shenzhen Research Institute

An on-chip, high extinction ratio transverse electric(TE)-pass polarizer using a silicon hybrid plasmonic grating is proposed and experimentally demonstrated. Utilizing plasmonics to manipulate the effective index and mode distribution, the transverse magnetic mode is reflected and absorbed, while the TE mode passes through with relatively low propagation loss. For a 6-μm-long device, the measurement result shows that the extinction ratio in the wavelength range of 1.52 to 1.58 μm varies from 24 to 33.7 dB and the insertion loss is 2.8–4.9 dB. Moreover,the structure exhibits large alignment tolerance and is compatible with silicon-on-insulator fabrication technology.

关键词： TE-pass polarizer using silicon hybrid plasmonic grating transverse magnetic mode

Silicon-based optoelectronics:progress towards large scale optoelectronic integration and applications

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Frontiers of Optoelectronics 2022年第2期15卷 179-180页

作者： Dingshan Gao zhiping zhou Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074China State Key Laboratory of Advanced Optical Communication Systems and Networks School of ElectronicsPeking UniversityBeijing 100871China

In the past half century,silicon-based microelectronics and optical fiber communication have triggered a far-reaching information technology revolution,which has moved human society into a high-speed information *** demand for communication capacity and speed is growing *** the other hand,data center and high-performance computing are facing bottlenecks of speed,bandwidth,and energy consumption of electrical interconnections.

关键词： interconnection optoelectronic communication

Unsupervised Time Series Segmentation: A Survey on Recent Advances

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Computers, Materials & Continua 2024年第8期80卷 2657-2673页

作者： Chengyu Wang Xionglve Li Tongqing zhou zhiping Cai College of Computer National University of Defense TechnologyChangsha410073China

Time series segmentation has attracted more interests in recent years,which aims to segment time series into different segments,each reflects a state of the monitored *** there have been many surveys on time series segmentation,most of them focus more on change point detection(CPD)methods and overlook the advances in boundary detection(BD)and state detection(SD)*** this paper,we categorize time series segmentation methods into CPD,BD,and SD methods,with a specific focus on recent advances in BD and SD *** the scope of BD and SD,we subdivide the methods based on their underlying models/techniques and focus on the milestones that have shaped the development trajectory of each *** a conclusion,we found that:(1)Existing methods failed to provide sufficient support for online working,with only a few methods supporting online deployment;(2)Most existing methods require the specification of parameters,which hinders their ability to work adaptively;(3)Existing SD methods do not attach importance to accurate detection of boundary points in evaluation,which may lead to limitations in boundary point *** highlight the ability to working online and adaptively as important attributes of segmentation methods,the boundary detection accuracy as a neglected metrics for SD methods.

关键词： Time series segmentation time series state detection boundary detection change point detection

Microring resonator for glucose sensing applications

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Frontiers of Optoelectronics 2009年第3期2卷 304-307页

作者： Yao CHEN Zhengyu LI Huaxiang YI zhiping zhou Jun YU Department of Electronic Science and Technology Huazhong University of Science and Technology Wuhan National Laboratory for Optoelectronics Huazhong University of Science and Technology State Key Laboratory on Advanced Optical Communication Systems and Networks Peking University School of Electrical and Computer Engineering Georgia Institute of Technology

Silicon nitride microring resonators were demonstrated as chemical sensors. The microring devices,with diameter of 100 μm, were fabricated using complementary metal oxide semiconductor（CMOS）-compatible technology, and a high Q factor of 15000 was realized with free spectrum range（FSR） of 2 nm. The structures were further packaged to perform as chemical sensors, and their functionality was proved using deionized water（DI water）and ethanol as detecting mediums. Lastly, the packaged chips were used to detect glucose solutions with various concentrations, and a detection capability of refractive index change of 10–3refractive index unit（RIU） was obtained.

关键词： microring resonator chemical sensor glucose sensing refractive index unit (RIU) Q factor

Effect of dipole location on profile properties of symmetric surface plasmon polariton mode in Au/Al2O3/Au waveguide

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Frontiers of Optoelectronics 2012年第1期5卷 63-67页

作者： Gongli XIAO Xiang JI Linfei GAO Xingjun WANG zhiping zhou The State Key Laboratory of Advanced Optical Communication Systems and Networks School of Electronics Engineering and Computer SciencePeking UniversityBeijing 100871China Information and Communications College Guilin University of Electronic TechnologyGuilin 541004China

This study uses a dipole embedded in A1203 layer to excite a symmetric surface plasmon polariton （SPP） mode in Au/A1203/Au waveguide to investigate its profile properties by using finite-difference time-domain （FDTD） method. The excited dipole decay radiatively direct near-field coupling to SPP mode owing to thin A1203 layer of 100 nm. The effects of electric and magnetic field intensity profiles and decay length have been considered and characterized. It is found that dipole location is an important factor to influence the horizontal and vertical profile properties of symmetric SPP mode in Au/A1203/Au waveguide. The amplitudes of electric and magnetic field intensity and the wavelengths of metal-insulatormetal （MIM） SPP resonance mode can be tuned by varying dipole location. The horizontal and vertical decay lengths are 19 and 24 nm, respectively. It is expected that the Au/A1203/Au waveguide structure is very useful for the practical applications of designing a SPP source.

关键词： waveguide surface plasmon polariton (SPP),profile properties

The"Magical Chinese Herbal Medicine"Series

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China Book International 2023年第3期 116-117页

作者： zhou zhiping China Popular Science Writers Association

This series is writtenbyexperts to introducethe culture of Chinese herbal medicine to *** talking about the stories of more than 120 interesting Chinese herbal medicines,this series leads children into the realm of tr... 详细信息

关键词： herbal Medicine Magic

A special issue on Silicon Photonics

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Frontiers of Optoelectronics 2012年第1期5卷 1-2页

作者： zhiping zhou The State Key Laboratory of Advanced Optical Communication Systems and Networks School of Electronics Engineering and Computer SciencePeking UniversityBeijing 100871China

The tremendous demand on low cost optoelectronic systems that may be used for high-density data communications, real time sensing/detection and high-speed control/actuation has heated up the research and development in silicon photonics, which studies the principles and technologies of merging electronics and photonics into the silicon platform. To make a silicon photonic system reality, the compatibility in device size and integration processing between the photonics and electronics is essential. Over the past years, unprecedented advancement on individual silicon photonic devices, such as waveguide, beam splitter, light source, modulator, and detector, have been reoorted, vet the Droaress in size and Drocessina issues are still under develoDment.

关键词： issue photonics

急性后循环大血管闭塞血管内治疗预后的危险因素分析

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中国卫生标准管理 2024年第7期15卷 96-100页

作者：朱国吴达周志平宋金海沈春升齐明江苏大学附属宜兴医院神经外科江苏宜兴214200

目的探讨急性后循环大血管闭塞血管内治疗后90 d预后的危险因素。方法回顾性分析2019年3月—2023年6月江苏大学附属宜兴医院神经外科收治的64例患者资料,均为急性后循环大血管闭塞并行血管内治疗的病例。根据患者术后90 d改良Rankin量表... 详细信息

目的探讨急性后循环大血管闭塞血管内治疗后90 d预后的危险因素。方法回顾性分析2019年3月—2023年6月江苏大学附属宜兴医院神经外科收治的64例患者资料,均为急性后循环大血管闭塞并行血管内治疗的病例。根据患者术后90 d改良Rankin量表(modified rankin score,mRS)评分,mRS评分≤2分者为预后良好组,mRS评分≥3分者为预后不良组,将基线资料、临床资料及随访资料行组间比较。先行单因素分析筛选出危险因素,再行多因素logistic回归分析。结果共入组64例患者,其中预后良好组25例,预后不良组39例,单因素分析结果显示,2组间术前美国国立卫生研究院卒中量表(National Institutes of Health stroke scale,NIHSS)评分及基底动脉闭塞血管造影侧支分级(angiographic collateral grading system for basilar artery occlusion,ACGS-BAO)比较,差异有统计学意义(P<0.05)。多因素logistic回归分析结果显示,术前NIHSS评分≥20分及ACGS-BAO分级≤2级与不良预后相关,2组比较差异有统计学意义(P<0.05)。结论急性后循环大血管闭塞血管内治疗术后90 d不良预后与术前高NIHSS评分,低ACGS-BAO分级相关。

关键词：急性后循环大血管闭塞血管内治疗预后