2019 IEEE 4th Optoelectronics Global Conference (OGC)最新文献_第2页

Q-switched Noise-Like Pulse in a Tm-doped Fiber Laser 掺铥光纤激光器中的q开关类噪声脉冲

2019 IEEE 4th Optoelectronics Global Conference (OGC) Pub Date : 2019-09-01 DOI: 10.1109/OGC.2019.8925286

Jingmin Liu, Xingliang Li, Shumin Zhang, Chaoran Wang, Liangliang Chen, Zihao Guo, Lisha Liu, Yaxing Xin, Zhenjun Yang

引用次数: 0

Tapered Fiber Based Infrared DNA Molecule Sensor 锥形光纤红外DNA分子传感器

2019 IEEE 4th Optoelectronics Global Conference (OGC) Pub Date : 2019-09-01 DOI: 10.1109/OGC.2019.8925258

Jun Pan, Xiaoyu Sun, Jijun Feng, H. Zeng

引用次数: 0

Study of Extended Cycle Restriction Based P-Cycle Construction Algorithm 基于扩展环约束的p环构造算法研究

2019 IEEE 4th Optoelectronics Global Conference (OGC) Pub Date : 2019-09-01 DOI: 10.1109/OGC.2019.8925238

Qiang Sun, Mingming Dong, Yang Zhou

{"title":"Study of Extended Cycle Restriction Based P-Cycle Construction Algorithm","authors":"Qiang Sun, Mingming Dong, Yang Zhou","doi":"10.1109/OGC.2019.8925238","DOIUrl":"https://doi.org/10.1109/OGC.2019.8925238","url":null,"abstract":"P-Cycle protection technology is an important technology in optical network protection. This paper proposes a new P-Cycle construction algorithm ERPA (Extended cycle Restriction Based P-Cycle Construction Algorithm), which is based on the variance, mean and redundancy of unprotected working capacity on all candidate cycles. In the process of cycle expansion, the algorithm chooses the extended candidate cycle whose variance, mean and redundancy satisfy the conditions as the final candidate cycle of the current round, which can guarantee the quality of the extended cycle and limit the number of P-Cycle cycles that complete the protection; When the values of unprotected-links(UPL), the redundancy, mean and the parameter n satisfy the stop condition, the cycle expansion is stopped, so that the number of cycles and the cycle length can be effectively balanced. In the simulation process, the ERPA algorithm is simulated by using the COST293 European Optical Network (EON) topology model, and the performance under different n values is compared and analyzed. The simulation results show that ERPA algorithm needs fewer cycles, has higher protection capacity efficiency and lower total time consumption under the same resource and work capacity, which makes the proposed algorithm more feasible and effective.","PeriodicalId":381981,"journal":{"name":"2019 IEEE 4th Optoelectronics Global Conference (OGC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129475941","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Near-Infrared Array Receiver for Real-Time 3D Imaging Application 用于实时三维成像的近红外阵列接收器

2019 IEEE 4th Optoelectronics Global Conference (OGC) Pub Date : 2019-09-01 DOI: 10.1109/OGC.2019.8925085

Yun-xiu Yang, Jianbo Gao, Haizhi Song, Changdong Guo, Shijie Deng, Qian Dai, Haihua Huang, Xianguo Kou, Xiaolong Lu, Fei Yuan, Li Jing

{"title":"Near-Infrared Array Receiver for Real-Time 3D Imaging Application","authors":"Yun-xiu Yang, Jianbo Gao, Haizhi Song, Changdong Guo, Shijie Deng, Qian Dai, Haihua Huang, Xianguo Kou, Xiaolong Lu, Fei Yuan, Li Jing","doi":"10.1109/OGC.2019.8925085","DOIUrl":"https://doi.org/10.1109/OGC.2019.8925085","url":null,"abstract":"In this paper, a near-infrared array receiver consisting of two 16-element linear-arrays InGaAs reach-through avalanche photodiodes and readout circuit assembled by system-level integrated package was developed for 3D realtime imaging. The readout circuit includes 32 transimpedance amplifiers, double-threshold comparators and time-to-digital converters (TDC). With transimpedance amplifier based on closed-loop structure of inverter-like amplifier circuit, and post-stage differential output amplifier, the readout circuit can achieve high gain, large bandwidth and low noise. The double threshold comparator was used to solve walking error. With two-step architecture combining 8-bit coarse counting and 6-bit fine counting, the dynamic range of the receiver is increased by coarse counting while its resolution is improved by combining fine counting. When the system emits a laser pulse, the receiver starts timing and converts the echo signal to a voltage signal. When a stop timing signal is generated, the system quantifies the time of flight to 14-bit digital signal. The developed receiver demonstrates the pulse responsivity of $mathbf{5.4}times 10^{5} mathbf{V}/mathbf{W}$, the 3dB bandwidth of 142.9 MHz, the minimum detectable optical power of about 26.7 nW $(mathbf{SNR}=10)$, and the time resolution of 200 ps. When the receiver is applied to a lidar system, where a 1550 nm semiconductor laser illuminates the target scene with pulse width shorter than 10 ns and repetition frequency more than 20 kHz, combining timing control with software algorithm, we get a clear environmental 3D image in real time.","PeriodicalId":381981,"journal":{"name":"2019 IEEE 4th Optoelectronics Global Conference (OGC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131389739","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ultra-High-Power and High-Efficiency 905nm Pulsed Laser for LiDAR 激光雷达用超高功率高效率905nm脉冲激光器

2019 IEEE 4th Optoelectronics Global Conference (OGC) Pub Date : 2019-09-01 DOI: 10.1109/OGC.2019.8925087

Y. Qiu, Yehua Xie, Weimin Wang, Wenbin Liu, L. Kuang, Xue Bai, M. Hu, J. Ho

引用次数: 3

A Novel High-Speed Photon Counting System with Programmed Dead Time 一种可编程死区高速光子计数系统

2019 IEEE 4th Optoelectronics Global Conference (OGC) Pub Date : 2019-09-01 DOI: 10.1109/OGC.2019.8925285

Fei Yuan, Xiaolong Lu, Li Jing, Yun-xiu Yang, Fanlin Kong, Shijie Deng, Changdong Guo, Haizhi Song

{"title":"A Novel High-Speed Photon Counting System with Programmed Dead Time","authors":"Fei Yuan, Xiaolong Lu, Li Jing, Yun-xiu Yang, Fanlin Kong, Shijie Deng, Changdong Guo, Haizhi Song","doi":"10.1109/OGC.2019.8925285","DOIUrl":"https://doi.org/10.1109/OGC.2019.8925285","url":null,"abstract":"With high sensitivity at single photon level, Geiger-Mode (GM) avalanche photodiodes (APD) are widely used in spectrum measurement, 3D imaging, astronomical observation, biomedical and other fields. In this paper, a high-speed photon counting system is proposed with an active quench and reset integrated circuit (AQR-IC) that drives a near infrared InGaAs GM-APD. The avalanche current is converted into voltage signal by utilizing parasitic capacitance of APD and circuit's input port. Multi-stage inverters detect the induced voltage, and generate an output TTL pulse indicating occurrence of avalanche event. At the same time, the active quench circuit is introduced to stop avalanche quickly. Then the active reset circuit makes APD working in Geiger mode after a programmable delay time which could be set by field programmable gate array(FPGA). The adjustable dead time enormously improve the flexibility of photon counting system applications. The proposed AQR-IC was fabricated in SMIC $mathbf{0.18 mu m}$ CMOS process. Applied for InGaAs GM-APD, experimental results show that the circuit is capable of fast quenching and recovering. The system provides adjustable dead time from 64 ns up to $mathbf{163.6 mu s}$ with a setting resolution of 20 ns, corresponding to a maximum counting rate of 15.6 MHz. The system can meet the application requirement of free-running mode detection.","PeriodicalId":381981,"journal":{"name":"2019 IEEE 4th Optoelectronics Global Conference (OGC)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115107601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Harmonic Condensed Soliton Phase in a Mode-Locked Fiber Laser 锁模光纤激光器中的谐波凝聚孤子相位

2019 IEEE 4th Optoelectronics Global Conference (OGC) Pub Date : 2019-09-01 DOI: 10.1109/OGC.2019.8925148

Liangliang Chen, Xingliang Li, Shumin Zhang, Jingmin Liu, Chaoran Wang, Zihao Guo, Lisha Liu, Yaxing Xin, Zhenjun Yang

引用次数: 0

Cellular-Level Structure Imaging with Micro-optical Coherence Tomography $mathbf{(mu OCT)}$ for Kidney Disease Diagnosis 微光学相干层析成像在肾脏疾病诊断中的应用

2019 IEEE 4th Optoelectronics Global Conference (OGC) Pub Date : 2019-09-01 DOI: 10.1109/OGC.2019.8925287

Chi Hu, Xiaojun Yu, Qianshan Ding, Zeming Fan, Zhaohui Yuan, Juan Wu, Linbo Liu

{"title":"Cellular-Level Structure Imaging with Micro-optical Coherence Tomography $mathbf{(mu OCT)}$ for Kidney Disease Diagnosis","authors":"Chi Hu, Xiaojun Yu, Qianshan Ding, Zeming Fan, Zhaohui Yuan, Juan Wu, Linbo Liu","doi":"10.1109/OGC.2019.8925287","DOIUrl":"https://doi.org/10.1109/OGC.2019.8925287","url":null,"abstract":"Chronic kidney disease (CKD) is one of the public health threats around the world, which may cause serious health problems like cardiovascular disease, kidney failure, or even more serious as premature death. Although CKD usually could be managed by general internists, such a way of treatment can be applied only when significant symptoms appear, which is very slow. It has also been reported that CKD could be characterized by means of glomeruli, and classified by the stages of disease severity for early treatment. However, due to lack of reliable method to detect the cellular-level microstructures for disease severity characterization, the diagnosis is troublesome, and thus, the treatments might be delayed while the best treatment time could be missed. For early detection of CKD, it is imperative to develop reliable tools to detect and characterize the disease at an early stage with minimal or noninvasiveness. For this research, the micro-optical coherence tomography $mathbf{(mu OCT)}$ was assessment it feasibility as a cellular-level structure imaging tool in kidney disease diagnosis at an early stage. Specifically, by measuring the number of glomeruli within a volumetric kidney tissue, a new diagnostic criteria is also established. Imaging results of the kidney specimens as compared their corresponding histology show that the cellular-level glomeruli structures could be identified clearly, and as a basic functional unit of kidney, it could be utilized as a reliable parameter to access the severity of the CKD.","PeriodicalId":381981,"journal":{"name":"2019 IEEE 4th Optoelectronics Global Conference (OGC)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121170867","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Effect of Deposition Strategy on Fatigue Behavior of Laser Melting Deposition 12CrNi2 Alloy Steel 沉积策略对激光熔化沉积12CrNi2合金钢疲劳行为的影响

2019 IEEE 4th Optoelectronics Global Conference (OGC) Pub Date : 2019-09-01 DOI: 10.1109/OGC.2019.8925011

W. Yi, Hui Chen, Yingzhou Wu, Yong Chen, Hongyu Li

{"title":"Effect of Deposition Strategy on Fatigue Behavior of Laser Melting Deposition 12CrNi2 Alloy Steel","authors":"W. Yi, Hui Chen, Yingzhou Wu, Yong Chen, Hongyu Li","doi":"10.1109/OGC.2019.8925011","DOIUrl":"https://doi.org/10.1109/OGC.2019.8925011","url":null,"abstract":"In this paper, the 12CrNi2 alloy steel parts were fabricated by laser melting deposition (LMD) using two kinds of deposition strategies, which were single direction scanning(SDS) and cross direction scanning(CDS). The microstructure and fatigue behavior of LMD 12CrNi2 alloy steel samples were investigated. Thy typical microstructure of both deposition strategy were ferrite and can be divided into two zones: remelted zone and non-remelted zone. The non-remelted zone showed typical columnar crystal morphology while the structure of remelted zone was homogenized. Compared with SDS deposition strategy, the microstructure of CDS deposition strategy had shorter columnar grains and finer grains. The relative densities of SDS and CDS deposition strategies were 98.1 and 97.3, respectively, indicating that SDS had lower porosity. The fatigue strength of SDS deposition strategy was higher than that of CDS deposition strategy, which were 320 MPa and 200 MPa. There were more defects in CDS deposition strategy, which accelerated the initiation and propagation of cracks. CDS deposition strategy had longer interlayer interval time, which will reduce the penetration depth of laser, affect the degree of previous layer remelting, and eventually lead to unmelted powder, porosity and other defects in the lap zone.","PeriodicalId":381981,"journal":{"name":"2019 IEEE 4th Optoelectronics Global Conference (OGC)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123244815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dark Current Characteristic of p-i-n and nBn MWIR InAs/GaSb Superlattice Infrared Detectors p-i-n和nBn MWIR InAs/GaSb超晶格红外探测器的暗电流特性

2019 IEEE 4th Optoelectronics Global Conference (OGC) Pub Date : 2019-09-01 DOI: 10.1109/OGC.2019.8925152

Yang Li, Wenliang Xiao, Liyuan Wu, Xiumin Xie, P. Lu, Shumin Wang

{"title":"Dark Current Characteristic of p-i-n and nBn MWIR InAs/GaSb Superlattice Infrared Detectors","authors":"Yang Li, Wenliang Xiao, Liyuan Wu, Xiumin Xie, P. Lu, Shumin Wang","doi":"10.1109/OGC.2019.8925152","DOIUrl":"https://doi.org/10.1109/OGC.2019.8925152","url":null,"abstract":"The theoretical dark current model of InAs/GaSb type II superlattice (T2SL) p-i-n and nBn photodetectors is presented. The nBn structure was designed to suppress generation-recombination (G-R), surface leakage and tunnel currents. 8 band $mathbf{k}cdot mathbf{p}$ model including the conduction and valence band mixing was applied to calculate the band structure and optical transition of InAs/GaSb T2SL. Theoretical calculations are performed for different doping level of p-i-n and nBn detectors. For p-i-n detector, dark current was studied for different p-contact layer doping and different absorber layer doping. For nBn detector, different contact doping concentration and absorb doping concentration was studied. At low temperature, dark current of p-i-n detector was dominant by generation-recombination and tunnel current, nBn structure can inhibit tunnel and generation-recombination current. At high temperature, the dark current of p-i-n detector and nBn detector have the same order of magnitude and are both dominated by diffusion current. Quantum efficiency and resistance-area product of p-i-n and nBn detectors were also calculated at 120 K, quantum efficiency of p-i-n detector is a bit larger than nBn detector, but dark current and resistance area product of nBn detector are better.","PeriodicalId":381981,"journal":{"name":"2019 IEEE 4th Optoelectronics Global Conference (OGC)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122541683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0