IEEE Photonics Technology Letters最新文献_第10页

Bandwidth Characteristics of a Graphene/Silicon Schottky-Junction Photodetector 石墨烯/硅肖特基结光电探测器的带宽特性

IF 2.3 3区工程技术

IEEE Photonics Technology Letters Pub Date : 2025-04-01 DOI: 10.1109/LPT.2025.3556025

Wangheng Pan;Zongwen Li;Anran Wang;Pengfei Zhao;Hu Chen;Zhixiang Zhang;Yi Shi;Yang Xu;Fengqiu Wang

{"title":"Bandwidth Characteristics of a Graphene/Silicon Schottky-Junction Photodetector","authors":"Wangheng Pan;Zongwen Li;Anran Wang;Pengfei Zhao;Hu Chen;Zhixiang Zhang;Yi Shi;Yang Xu;Fengqiu Wang","doi":"10.1109/LPT.2025.3556025","DOIUrl":"https://doi.org/10.1109/LPT.2025.3556025","url":null,"abstract":"Graphene/silicon (Gr/Si) heterostructure has emerged as a promising approach for high-performance broadband photodetectors. However, it is often the case that devices of similar structures exhibit bandwidths that differ by orders of magnitude. Moreover, the relatively large photosensitive area combined with multiple operation modes make it imperative to understand the in-plane bandwidth characteristics of such devices. Here, we conducted a thorough investigation of the in-plane bandwidth distribution and the focal-condition-dependent bandwidth characteristics in an exemplar Gr/Si Schottky-junction photodetector with a large lateral dimension (<inline-formula> <tex-math>$sim 640~mu $ </tex-math></inline-formula>m). It is found that the bandwidth as deduced by the 0.35/<inline-formula> <tex-math>$tau _{mathrm {FWHM}}$ </tex-math></inline-formula> method can better depict the high-frequency transient response of the device than the more conventional S21 bandwidth. Additionally, influence of illumination area and excitation power density on the response time has been characterized. Our study helps clarify two commonly used bandwidth figures of merit, and suggests that more analysis of the in-plane bandwidth characteristics may lead to updated design guidelines for photosensitive devices.","PeriodicalId":13065,"journal":{"name":"IEEE Photonics Technology Letters","volume":"37 8","pages":"485-488"},"PeriodicalIF":2.3,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143817837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High-Power Near Flat-Top Distributed Ultraviolet 330 nm Laser for Photochemical Synthesis 用于光化学合成的大功率近平顶分布紫外330nm激光器

IF 2.3 3区工程技术

IEEE Photonics Technology Letters Pub Date : 2025-04-01 DOI: 10.1109/LPT.2025.3556005

Qian Ti;Fei Yang;Huan Wang;Da-Fu Cui;Chuan Guo;Qi Bian;Chen Wang;Yong Bo;Qin-Jun Peng

引用次数: 0

Optimized Quantum Random Number Generator for Single Photon LiDAR Interference Suppression 用于抑制单光子激光雷达干扰的优化量子随机数发生器

IF 2.3 3区工程技术

IEEE Photonics Technology Letters Pub Date : 2025-03-31 DOI: 10.1109/LPT.2025.3555856

Yicheng Wang;Xing Yang;Hao Pan;Yunhui Guo;Lei Zuo;Yuwei Chen

引用次数: 0

Efficient Chiral Nonlinear Metasurface Based on Lithium Niobate 基于铌酸锂的高效手性非线性超表面

IF 2.3 3区工程技术

IEEE Photonics Technology Letters Pub Date : 2025-03-31 DOI: 10.1109/LPT.2025.3556515

Xudong Hu;Rongquan Chen;Wei Wang;Yuqing Song;Xixi Chu;Hanfeng Wei;Jinbiao Liu;Ming Chen

引用次数: 0

In-Sensor Convolutional Computation Based on Retina-Inspired Infrared Photodetector Array 基于视网膜启发红外探测器阵列的传感器内卷积计算

IF 2.3 3区工程技术

IEEE Photonics Technology Letters Pub Date : 2025-03-31 DOI: 10.1109/LPT.2025.3555798

Hongyi Lin;Xinyu Ma;Xiaoyong Jiang;Xiangyang Shi;Minxia Xu;Yutong Li;Siyu Long;Yi Dong;Qing Li;Ting He;Fang Zhong;Ning Li;Wei Lu;Weida Hu;Jinshui Miao

{"title":"In-Sensor Convolutional Computation Based on Retina-Inspired Infrared Photodetector Array","authors":"Hongyi Lin;Xinyu Ma;Xiaoyong Jiang;Xiangyang Shi;Minxia Xu;Yutong Li;Siyu Long;Yi Dong;Qing Li;Ting He;Fang Zhong;Ning Li;Wei Lu;Weida Hu;Jinshui Miao","doi":"10.1109/LPT.2025.3555798","DOIUrl":"https://doi.org/10.1109/LPT.2025.3555798","url":null,"abstract":"In the field of infrared detection, as the resolution of detection wavelengths and spatial imaging improves, traditional architectures that separate sensing and processing struggle to meet the exponentially growing demands of machine vision. Inspired by the human visual system, which performs preprocessing on the retina to reduce the burden of information transmission, we propose an MSM (metal/semiconductor-InGaAs/metal) structure retina-inspired infrared photodetector. This detector allows the modulation of response polarity and amplitude by adjusting the bias voltage, enabling a range of preprocessing operations inside the detector. The Au/InGaAs/Au retinal-like detector exhibits tunable positive and negative photoresponses in the short-wave infrared region, with a response speed of up to 490 ns, facilitating ultra-fast image information preprocessing. We propose a <inline-formula> <tex-math>$16times 16$ </tex-math></inline-formula> in-sensor computing hardware system capable of deploying various convolution kernels directly inside the detector to perform convolution operations, offering a unique opportunity for lightweight convolutional neural network hardware.","PeriodicalId":13065,"journal":{"name":"IEEE Photonics Technology Letters","volume":"37 9","pages":"541-544"},"PeriodicalIF":2.3,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143865319","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mitigation of Pointing Errors in FSO Systems Through AI-Driven Spatial Light Modulation 利用人工智能驱动的空间光调制技术缓解FSO系统中的指向误差

IF 2.3 3区工程技术

IEEE Photonics Technology Letters Pub Date : 2025-03-30 DOI: 10.1109/LPT.2025.3575366

Felipe B. Bittar;Vitor F. Correia;Gil M. Fernandes;Andrés L. Barbero;Paulo P. Monteiro;Fernando P. Guiomar;Vinicius N. Henrique Silva

{"title":"Mitigation of Pointing Errors in FSO Systems Through AI-Driven Spatial Light Modulation","authors":"Felipe B. Bittar;Vitor F. Correia;Gil M. Fernandes;Andrés L. Barbero;Paulo P. Monteiro;Fernando P. Guiomar;Vinicius N. Henrique Silva","doi":"10.1109/LPT.2025.3575366","DOIUrl":"https://doi.org/10.1109/LPT.2025.3575366","url":null,"abstract":"Free-space optical (FSO) communication is an emerging technology that enables higher data rates. While FSO offers several advantages, it faces significant challenges due to the atmospheric channel, which can introduce pointing errors (PE) between transceivers and this phenomenon can be exacerbated by mechanical instabilities. Current pointing error compensation (PEC) mechanisms are primarily based on mechatronic devices; however, these systems may require redundancy to ensure reliability. This work presents an experimental study investigating the integration of a spatial light modulator (SLM) with a generative convolutional neural network (CNN) to mitigate residual PE in FSO communication systems. In this context, the proposed method demonstrated improved coupling efficiency into a single-mode fiber (SMF) by compensating mechanical-induced PE, introducing a novel application for SLMs and CNNs. Experimental results show gains up to 34dB for a 0.5mm beam misalignment, with sustained improvements in optical power for displacements up to 4.8mm.","PeriodicalId":13065,"journal":{"name":"IEEE Photonics Technology Letters","volume":"37 16","pages":"925-928"},"PeriodicalIF":2.3,"publicationDate":"2025-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144243656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Polarization-Dependent Loss Mitigation via Orthogonal Design Precoding and Interference Cancellation 基于正交设计预编码和干扰抵消的极化相关损耗抑制

IF 2.3 3区工程技术

IEEE Photonics Technology Letters Pub Date : 2025-03-28 DOI: 10.1109/LPT.2025.3555919

Mohannad Shehadeh;Frank R. Kschischang

引用次数: 0

Radar Target Simulator Based on Swept-Wavelength Optical Source 基于扫描波长光源的雷达目标模拟器

IF 2.3 3区工程技术

IEEE Photonics Technology Letters Pub Date : 2025-03-28 DOI: 10.1109/LPT.2025.3574313

Yunlu Xing;Zhengyuan Zhu;Shangyuan Li;Xiaoxiao Xue;Xiaoping Zheng

引用次数: 0

Compact Power-Efficient Optical Phased Array Enabled by Photonic Crystal Waveguide Phase Shifters 光子晶体波导移相器实现的紧凑型高能效光学相控阵

IF 2.3 3区工程技术

IEEE Photonics Technology Letters Pub Date : 2025-03-28 DOI: 10.1109/LPT.2025.3574383

Guihan Wu;Yu Xin;Jing Yuan;Shichong Yang;Yue Shao;Wei Jiang

引用次数: 0

Magnetic Field Sensor Based on Nano-Terbium-Oxide Coated Long-Period Fiber Grating 基于纳米氧化铽涂层长周期光纤光栅的磁场传感器

IF 2.3 3区工程技术

IEEE Photonics Technology Letters Pub Date : 2025-03-28 DOI: 10.1109/LPT.2025.3574243

Yan Hua Dong;Mei Chen;Cai Hong Huang;Wei Qi Wang;Bin Chen;Yi Huang;Yan Hua Luo;Ting Yun Wang

引用次数: 0