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Silicon photonics for high-capacity data communications

Photonics Research 2022年第9期10卷 I0002-I0030页

作者： YAOCHENG SHI YONG ZHANG YATING WAN YU YU YUGUANG ZHANG XIAO HU XI XIAO HONGNAN XU LONG ZHANG BINGCHENG PAN Centre for Optical and Electromagnetic Research State Key Laboratory for Modern Optical InstrumentationCollege of Optical Science and EngineeringZhejiang UniversityZijingang CampusHangzhou 310058China State Key Laboratory of Advanced Optical Communication Systems and Networks Department of Electronic EngineeringShanghai Jiao Tong UniversityShanghai 200240China Institute for Energy Efficiency University of California Santa BarbaraSanta BarbaraCalifornia 93106USA Electrical and Computer Engineering Department King Abdullah University of Science and Technology(KAUST)Thuwal 23955-6900Saudi Arabia Wuhan National Laboratory for Optoelectronics&School of Optical and Electronic Information Huazhong University of Science and TechnologyWuhan 430074China National Information Optoelectronics Innovation Center China Information and Communication Technologies Group Corporation(CICT)Wuhan 430074China State Key Laboratory of Optical Communication Technologies and Networks China Information and Communication Technologies Group Corporation(CICT)Wuhan 430074China Department of Electronic Engineering The Chinese University of Hong KongShatinNew TerritoriesHong KongChina

In recent years,optical modulators,photodetectors,(de)multiplexers,and heterogeneously integrated lasers based on silicon optical platforms have been *** performance of some devices even surpasses the traditional III-V and photonic integrated circuit(PIC)platforms,laying the foundation for large-scale photonic *** photonic technology can overcome the limitations of traditional transceiver technology in high-speed transmission networks to support faster interconnection between data *** this article,we will review recent progress for silicon *** first part gives an overview of recent achievements in silicon *** second part introduces the silicon photonic building blocks,including low-loss waveguides,passive devices,modulators,photodetectors,heterogeneously integrated lasers,and so *** the third part,the recent progress on high-capacity silicon photonic transceivers is *** the fourth part,we give a review of high-capacity silicon photonic networks on chip.

关键词： interconnection passive networks

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Energy storage system configuration in power distribution network considering partitioned resource coordination

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Electric Power Systems Research 2025年 248卷

作者： Jing Shi Jiachen Zhou Zitong Zhang Qi Liu Qi Cheng Siwei Cheng Li Ren Zili Yang State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science and Technology Hubei Wuhan 430074 China State Grid Hubei Electric Power Co Economic Research Institute Hubei Wuhan 430074 China

The new distribution network introduces a large number of distributed resources, which brings some challenges to its safe and economic operation. Furthermore, the extensive application of advanced measurement technology leads to the quantification of the operating data. The distributed control with regional autonomy function can reduce the requirement of communication and realize the optimal control of the system, which has a wide application prospect. In addition, ESS is an important means to improve the flexibility of new power systems, so rational allocation of ESS in the distribution network can effectively improve the optimization control effect. In this paper, an ESS optimization configuration for power distribution network considering resource partition coordination is proposed. Firstly, the node similarity matrix is established based on the coupling and active power matching between nodes, and the spectral clustering algorithm is employed to divide the power distribution network into node clusters. Secondly, considering the interaction of ESS and distribution network operation in each zone, a dual-layer optimal configuration model is established, with the location and capacity of ESS optimized by outer layer and the operation of ESS optimized by inner layer interactively. Lastly, a case study of IEEE-33 power distribution network with wind and photovoltaic power generation is carried out to verify the effectiveness of proposed method.

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An Integrated Buck-Boost Converter with SRC for Wide Input Voltage

An Integrated Buck-Boost Converter with SRC for Wide Input V...

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Workshop on Wide Bandgap Power Devices and Applications in Asia (WiPDA Asia)

作者： Yanqing Wang Yutao Lou Xiang Guo Changle Xu Xudong Zou Yong Kang China-EU Institute for Clean and Renewable Energy Huazhong University of Science and Technology Wuhan China Shanghai Institute of Satellite Engineering Shanghai China State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan China

ISBN: (纸本)9781665448178

The series resonant converter has attracted more and more attentions because of its resonant characteristic. However, the gain of series resonant converter is less than 1, which is not applicable for wide input voltage. In this paper, an innovative DC/DC converter integrated Buck-Boost and series resonant converter (IBBSRC) was put forward. The IBBSRC integrates intermediate leg of Buck-Boost converter and SRC to diminish amount of switches and switching losses. Besides, with the modulation strategy of two-edge-modulation + single-phase-shift ( $\text{TEM}+\text{SPS}$ ), constant output voltage and zero voltage switching of switches are realized. Six operation modes for above resonant frequency operation were analyzed in detail. The parameter design and zero voltage switching of the converter were studied. Simulation results with an IBBSRC model were indicated to support the vlegality and viability of the propounded circuit topology.

关键词： Legged locomotion Photonic band gap Simulation Asia Switching loss Resonant frequency Voltage

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Preparation of nitrogen doped clews-like carbon materials and their application as the electrode in supercapacitor

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Chinese Chemical Letters 2019年第3期30卷 787-791页

作者： Shengrui Chen Jiyuan Liang Jinxing Zhao Haifeng Li Yan Liu Heming Deng Chang Liu Shun Tang Yuan-Cheng Cao Key Laboratory of Optoelectronic Chemical Materials and Devices Ministry of Education Jianghan University State Grid Electric Power Research Institute State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic Engineering Huazhong University of Science and Technology

In this work, nitrogen doped clews-like carbon materials were successfully fabricated through hydrothermal polymerization method, followed by post treatment that integrated the carbonization,activation and post-nitrogen doping into one process. This preparation method can form particular hierarchical porous structure without using any sacrificial templates. The experimental results show that the nitrogen doped clews-like hierarchical porous carbon materials possess a relatively high specific surface area of 815 m^2/g with the nitrogen content of 10.58 at%. The electrochemical properties show that the resulting sample delivers 258 F/g at a 0.5 A/g and excellent capacity retention of 79% at 20 A/g. After conducting 10,000 charge-discharge cycles at 10 A/g, the capacitance retention of 98.3% is *** intriguing results demonstrate that the obtained nitrogen doped clews-like carbon materials will be promising electrode materials for supercapacitor and other energy storage devices.

关键词： Porous carbon material Nitrogen doped Clews-like Hierarchical Electrode

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Mechanically reprogrammable Pancharatnam-Berry metasurface for microwaves

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advanced Photonics 2022年第1期4卷 69-79页

作者： Quan Xu Xiaoqiang Su Xueqian Zhang Lijuan Dong Lifeng Liu Yunlong Shi Qiu Wang Ming Kang Andrea Alù Shuang Zhang Jiaguang Han Weili Zhang Tianjin University Center for Terahertz Waves and College of Precision Instrument and Optoelectronics EngineeringKey Laboratory of Optoelectronic Information Technology(Ministry of Education of China)TianjinChina Shanxi Datong University Institute of Solid State Physics and College of Physics and Electronic ScienceShanxi Province Key Laboratory of Microstructure Electromagnetic Functional MaterialsDatongChina Wuhan University of Technology School of Information EngineeringWuhanChina Tianjin Normal University College of Physics and Materials ScienceTianjinChina City University of New York Advanced Science Research CenterPhotonics InitiativeNew YorkUnited States City University of New York Graduate CenterPhysics ProgramNew YorkUnited States University of Hong Kong Faculty of ScienceDepartment of PhysicsHong KongChina University of Hong Kong Department of Electrical and Electronic EngineeringHong KongChina Guilin University of Electronic Technology Guangxi Key Laboratory of Optoelectronic Information ProcessingSchool of Optoelectronic EngineeringGuilinChina Oklahoma State University School of Electrical and Computer EngineeringStillwaterOklahomaUnited States

Metasurfaces have enabled the realization of several optical functionalities over an ultrathin platform,fostering the exciting field of flat *** metasurfaces are achieved by arranging a layout of static meta-atoms to imprint a desired operation on the impinging wavefront,but their functionality cannot be *** and programmability of metasurfaces are the next important step to broaden their impact,adding customized on-demand functionality in which each meta-atom can be individually *** demonstrate a mechanical metasurface platform with controllable rotation at the meta-atom level,which can implement continuous Pancharatnam–Berry phase control of circularly polarized *** the proof-of-concept experiments,we demonstrate metalensing,focused vortex beam generation,and holographic imaging in the same metasurface template,exhibiting versatility and superior *** dynamic control of electromagnetic waves using a single,low-cost metasurface paves an avenue towards practical applications,driving the field of reprogrammable intelligent metasurfaces for a variety of applications.

关键词： reprogrammable metasurfaces Pancharatnam-Berry phase mechanical metasurfaces microwaves

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Study on Performance Modification of Insulation Wraps for Power Transmission Line Corona Noise Prevention

Study on Performance Modification of Insulation Wraps for Po...

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International Conference on Intelligent Computing, Automation and Systems (ICICAS)

作者： Liu Yiyi Chen Wei Lu Dan Wu Junjie Qi Wei State Grid Laboratory of Electric Equipment Noise and Vibration Research State Grid Hunan Electric Power Corporation Research Institute Changsha China State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan China

ISBN: (纸本)9781665428118

Study and prevention of transmission line corona noise has become an important means to effectively promote the environmental friendliness and energy saving of transmission line. Studies have shown that using hydrophilic coating treatment on the conductor surface, so that under the condition of precipitation, the rainwater can be evenly distributed on the conductor surface to reduce the formation density of water droplets, which can weaken the impact of raindrops on the curvature radius of the conductor. As a result, less distorted electric field and soft noise were produced, leading to reduce corona noise ultimately. The greater hydrophilicity of the conductor surface, the more significant the reduction of corona noise is. In this paper, experiments have validated that the modification of nano aluminum oxide by electron beam radiation graft technology can improve its surface reactivity, promote its dispersion and bonding ability in RTV rubber matrix, and then elevate the hydrophobicity, mechanical properties and aging resistance of modified RTV silicone rubber. In addition, specific properties of thermal conductivity and hydrophobicity can be improved by further adding functional monomers.

关键词： Power transmission lines Transmission line matrix methods Electron beams Surface resistance Conductors Thermal conductivity Corona

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Inhibitory Effect of Atmospheric Pressure Plasma on GH3 Pituitary Adenoma Cell Line and Primary Pituitary Tumor Cells From Patients

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IEEE Transactions on Radiation and Plasma Medical Sciences 2025年

作者： Fang, Qiuyue Liu, Yixiao Xing, Yanan Zhang, Xi Liu, Yuqing Liu, Yuxuan Sun, Zhiyan Guo, Yuqi Liu, Yulou He, Gaosheng Xu, Lixin Xu, Xiaojin Ouyang, Jiting Li, Chuzhong Yan, Xu University of Electronic Science and Technology of China Dartment of Neurosurgery Sichuan Provincial People’s Hospital Chengdu China Capital Medical University Beijing Neurosurgical Institute Beijing Tiantan Hospital Department of Pathophysiology Beijing100070 China Beijing Institute of Technology Shool of Physics Beijing100081 China Capital Medical University Beijing Neurosurgical Institute Department of Molecular Neuropathology Beijing100070 China Chengdu Jingcheng Technology Co. Ltd Chengdu610093 China Capital Medical University Beijing Neurosurgical Institute Beijing Tiantan Hospital Cell biology department Beijing100070 China Capital Medical University Department of Neurosurgery Beijing Tiantan Hospital Beijing China Huazhong University of Science and Technology State Key Laboratory of Advanced Electromagnetic Engineering and Technology Hubei WuHan430074 China

Although atmospheric pressure plasma (APP) treatment has exhibited promising antitumor efficacy across various cancer types, no studies have analyzed the effects of APP on pituitary adenoma. In this study, APP generation and treatment conditions were optimized and investigated. Four pituitary tumor cell lines (GH3, AtT-20, GT1-1, and MMQ) were used to assess the inhibitory effect of APP treatment and were compared with two glioblastoma (GBM) cell lines (U87MG and LN229) and a neuronal cell line (SH-SY5Y). Results showed that the APP treatment has a better inhibitory effect on pituitary tumor cells with minimal neurotoxicity. The best inhibitory effect was observed in GH3, which had an IC50 value of only 32.33 s. APP treatment elevated both intra-and extracellular reactive oxygen/nitrogen species (ROS/RNS) in GH3 cells, which induced significantly GH3 cell apoptosis. Non-invasive Micro-test technology (NMT) experiment revealed substantial Ca2+ influx following APP treatment in GH3 cells. Moreover, validation on primary pituitary tumor cells from patients corroborated these findings. Overall, our results highlight that APP treatment exerts substantial antitumor effects on pituitary adenoma cells compared to GBM cell lines, suggesting its potential as a complementary therapy in clinical neurosurgical treatment of pituitary adenoma. © 2017 IEEE.

关键词： Reactive oxygen species

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Design and simulation of stripline BPM for HUST proton therapy facility 7

Design and simulation of stripline BPM for HUST proton thera...

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7th International Beam Instrumentation Conference, IBIC 2018

作者： Li, J.Q. Fan, K.J. Chen, Q.S. Tang, K. Tian, P. State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science and Technology Wuhan430074 China

ISBN: (纸本)9783954502011

Proton beams used in Huazhong University of Science and technology Proton Therapy Facility (HUST-PTF) have extreme low currents of the order of nanoampere, which is a great challenge to beam diagnostics due to low signal level. Conventional destructive beam diagnostic devices will affect the quality of the beam and cannot work online during the patient treatment, so a nondestructive stripline beam position monitor (BPM) is designed. This study will introduce some analysis and simulation results of the stripline BPM, such as the coupling between the electrodes, impedance matching, signal response, etc. We also discussed how to increase the output signal by geometry optimization. Copyright © 2018 by JACoW — cc Creative Commons Attribution 3.0.

关键词： Proton beams

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Evolution process of T1 precipitate in Al-Cu-Li-TiC/TiB2 alloy during aging treatment

SSRN

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SSRN 2024年

作者： Wang, Haiyao Li, Jiadong Li, Yong Tang, Hongqun Xu, Guangming Zhang, Tongjin Wang, Yilei Qian, Xiaoming He, Chen State Key Laboratory of Rolling and Automation Northeastern University Shenyang110819 China Guangxi Advanced Aluminum Processing Innovation Center Co.LTD Nanning530007 China Key Laboratory of Electromagnetic Processing of Materials Ministry of Education Northeastern University Shenyang110819 China State Key Laboratory of Featured Metal Materials Life-cycle Safety for Composite Structures Nanning530004 China National Engineering Research Center for Equipment and Technology of Cold Strip Rolling Yanshan University Qinhuangdao066004 China Shenyang Institute of Automation Chinese Academy of Sciences Shenyang110169 China Guangxi University China

In this study, particle-reinforced aluminium matrix composites (PRAMCs) of an Al-Cu-Li alloy were prepared using nano-sized TiB2+TiC particles. The relationship between TiB2+TiC nanoparticles and T1 precipitates during the ageing process, as well as the influence of TiC+TiB2 particles on the growth process of T1 precipitates during the ageing process, were investigated. The grain sizes of the A0 and A1 samples were found to be 249.89 μm and 86.42 μm, respectively. The dislocation density is greater in the deformed A1 sample. The CTE effect generated by TiC and TiB2 particles enhances the deformed matrix's ability to retain dislocations and stimulates the precipitation of T1 precipitates during the ageing treatment. The A1 alloy reached the peak ageing state in a shorter time and yielded a greater number of T1 precipitates. The precipitation process of T1 precipitates can be described as follows: The sequence of events can be described as follows: SSSS→T1P→T1. The transition from T1P (face-centered cubic, FCC) to T1 (hexagonal close packing, HCP) entails a modification in the order of packing. The change in stacking sequence can be attributed to the presence of Shockley dislocations with an a/6 orientation located on the {111} plane of Al-T1P. With regard to thickness, the recently formed T1P precipitate is attached to the established T1 precipitate and extends along the c-axis through the shared copper-rich layer that has formed on both sides of the mature T1 precipitate. Subsequently, it underwent a transformation into a mature T1 precipitate via a process involving T1P. The mechanical properties of sample A1 are optimal at T=22h, with a yield strength, tensile strength, and elongation of 520 MPa, 553 MPa, and 8.2%, respectively. In comparison to the A0 sample, the yield strength and tensile strength exhibited an increase of 5.05% and 5.13%, respectively. © 2024, The Authors. All rights reserved.

关键词： Precipitation (chemical)

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A Novel Operation Principle of Air-core Pulsed Alternators to Achieve Multiple Railgun Launches

A Novel Operation Principle of Air-core Pulsed Alternators t...

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Electrical engineering (CIYCEE), IEEE China International Youth Conference on

作者： Kexun Yu Hanting Zhu Xianfei Xie State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science and Technology Wuhan CO China

ISBN: (数字)9781728196596

ISBN: (纸本)9781728196602

The pulsed power supply based on air-core pulsed alternator can output a current up to the megampere level in an extremely short time, with outstanding advantages of high energy density, high power density, and high integration degree. It has been a preferred power source for electromagnetic launch (EML) system. To achieve the required amplitude of the output current pulses, the field current of the alternator is often required to be up to tens of thousands ampere level. Therefore, the self-excitation method is often used to achieve the required field current in very short time. How to maintain high field current after the self-excitation process, is the key technology of the air-core pulsed alternator to achieve multiple railgun projectile launches in short time. However, the operation principles already proposed are only suitable to achieve single railgun projectile launch after the field current is built by self-excitation. If multiple railgun projectile launches are required, multiple self-excitations are required, which will not only require long time, but also causes a large amount of losses generated in the field winding. In this paper, a novel operation principle of the EML system, based on the air-core pulsed alternator, to achieve multiple electromagnetic railgun projectile launches after a self-excitation process is introduced. Based on the operation principle above, the changing trend of the field current is modeled and analyzed. Finally, the entire operation process of the EML system is simulated to verify the feasibility of the proposed operation principle.

关键词： Projectiles Atmospheric modeling Railguns Market research Discharges (electric) Alternators electromagnetics

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