IEEE Photonics Journal最新文献_第7页

Remote Characterization and Dissemination of Disper sion Compensated Ultrashort Pulses Through Dynamic Fiber Optic Links 动态光纤链路中色散补偿超短脉冲的远程表征与传播

IF 2.1 4区工程技术

IEEE Photonics Journal Pub Date : 2025-01-14 DOI: 10.1109/JPHOT.2025.3529627

C G Lakshmi;V R Supradeepa

{"title":"Remote Characterization and Dissemination of Disper sion Compensated Ultrashort Pulses Through Dynamic Fiber Optic Links","authors":"C G Lakshmi;V R Supradeepa","doi":"10.1109/JPHOT.2025.3529627","DOIUrl":"https://doi.org/10.1109/JPHOT.2025.3529627","url":null,"abstract":"Ultrashort optical pulse sources are often complex and resource-intensive, and thus, delivering pulses to multiple satellite locations over a fiber-optic network dynamically from a central location reduces overhead and increases the efficacy of the source usage. For robust delivery, accurate characterization of the pulse dispersion at the satellite locations without specialized equipment and its compensation is essential. This work demonstrates the delivery of dispersion-compensated pulses over standard optical fiber links and their characterization using a simple measurement module at satellite locations. The module uses a second-harmonic crystal and power detectors at the fundamental and second-harmonic wavelengths. A centrally located pulse shaper-based interferometer creates pulse pairs with varying time delays during the characterization phase. Together with the remote detectors, this provides the field and intensity autocorrelations, which describe the spectral and temporal domain of the pulse. We demonstrate our technique by transmitting dispersion compensated sub-400 fs pulses over two fiber optic links of 50 and 100 meters. The pulses are shaped adaptively before transmission to compensate for the dispersion-induced distortions. The pulse intensity and power spectrum are measured remotely and agree with those made at the source. This provides an easy distribution method for femtosecond lasers from central to satellite locations via standard optical fiber links on a time-share basis and their remote characterization.","PeriodicalId":13204,"journal":{"name":"IEEE Photonics Journal","volume":"17 1","pages":"1-5"},"PeriodicalIF":2.1,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10841985","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143106178","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Collinear Terahertz Generation from LiNbO3 Wafer Driven by an Ultrafast Yb-Laser 超快镱激光驱动LiNbO3晶圆共线太赫兹产生

IF 2.1 4区工程技术

IEEE Photonics Journal Pub Date : 2025-01-14 DOI: 10.1109/JPHOT.2025.3530086

Kang Wang;Hongyang Li;Zhuorui Zheng;Yi Liu;Ye Tian;Liwei Song

引用次数: 0

Multifunctional Photonic Reservoir Computing Based on Semiconductor Laser With Optical Feedback 基于光反馈半导体激光器的多功能光子库计算

IF 2.1 4区工程技术

IEEE Photonics Journal Pub Date : 2025-01-10 DOI: 10.1109/JPHOT.2025.3528019

Liyue Zhang;Weijie Hong;Songsui Li;Wei Pan;Lianshan Yan;Bin Luo;Xihua Zou

{"title":"Multifunctional Photonic Reservoir Computing Based on Semiconductor Laser With Optical Feedback","authors":"Liyue Zhang;Weijie Hong;Songsui Li;Wei Pan;Lianshan Yan;Bin Luo;Xihua Zou","doi":"10.1109/JPHOT.2025.3528019","DOIUrl":"https://doi.org/10.1109/JPHOT.2025.3528019","url":null,"abstract":"The human brain can efficiently handle multiple tasks simultaneously, with the structural segregation of brain regions closely linked to their functional specialization. In this paper, we propose and experimentally demonstrate multifunctional photonic reservoir computing (MPRC), inspired by this biological characteristic. The neuron states of the photonic reservoir are divided into distinct sections for different tasks by the designing of input matrix, and only a set of output weight matrix, applicable to all tasks, is ultimately trained. Therefore, MPRC is capable of handling multiple tasks simultaneously with a fixed set of parameters, mitigating the tedious process of hyperparameter optimization. The influence of neuron partition size and operating parameters on MPRC performance is studied systematically. Furthermore, the generalizability of MPRC is validated by performing four different tasks simultaneously. Finally, our results are experimentally demonstrated using semiconductor lasers with a time-delay feedback loop.","PeriodicalId":13204,"journal":{"name":"IEEE Photonics Journal","volume":"17 1","pages":"1-7"},"PeriodicalIF":2.1,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10836813","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143106177","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Improving Edge Quality of Liquid Crystal Display 3D Printing Using Local Dimming Method 局部调光法改善液晶显示器3D打印边缘质量

IF 2.1 4区工程技术

IEEE Photonics Journal Pub Date : 2025-01-08 DOI: 10.1109/JPHOT.2025.3527537

Xing-Rui Ding;Zi-Hao Deng;Jia-Sheng Li;Rui-Xiang Qian;Bo-Wen Duan;Zong-Tao Li

{"title":"Improving Edge Quality of Liquid Crystal Display 3D Printing Using Local Dimming Method","authors":"Xing-Rui Ding;Zi-Hao Deng;Jia-Sheng Li;Rui-Xiang Qian;Bo-Wen Duan;Zong-Tao Li","doi":"10.1109/JPHOT.2025.3527537","DOIUrl":"https://doi.org/10.1109/JPHOT.2025.3527537","url":null,"abstract":"The burgeoning advancements in Light Emitting Diode (LED) technology have opened avenues for applications beyond traditional display and lighting, notably in the realm of 3D printing. This study introduces a Local Dimming (LD) method that employs LED backlight technology to enhance the edge quality of Liquid Crystal Display (LCD) photocuring 3D printing (LPP). LPP, known for its rapid and cost-effective fabrication, faces challenges with light leakage and precision under high-power ultraviolet (UV) light. By locally adjusting the backlight array's brightness to conform to the digital mask's shape, this study effectively suppresses LCD light leakage and improves edge definition. A comprehensive investigation into the LD method's process parameters—exposure time, pixel compensation coefficient, and initial backlight calculation—reveals significant improvements in print quality. The LD method achieves up to an 81.56% enhancement in dimensional accuracy compared to the conventional full-backlight technique. This research not only addresses the intrinsic light leakage in LCDs but also facilitates the high-resolution printing of complex structures, thus expanding the utility of LED devices in additive manufacturing.","PeriodicalId":13204,"journal":{"name":"IEEE Photonics Journal","volume":"17 1","pages":"1-8"},"PeriodicalIF":2.1,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10834600","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143106176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Terahertz Modulation of Even-order Polarization in GaAs 砷化镓中偶级极化的太赫兹调制

IF 2.1 4区工程技术

IEEE Photonics Journal Pub Date : 2025-01-06 DOI: 10.1109/JPHOT.2025.3526152

Jianhua Sang;Haoyu Huang;Liwei Song;Ye Tian;Ruxin Li

引用次数: 0

Simulation and Experimental Study on Frequency Noise of Fabry-Pérot Cavity-Stabilized Laser for Space-Borne Gravitational Wave Detection 用于星载引力波探测的fabry - p<s:1>腔稳定激光器频率噪声仿真与实验研究

IF 2.1 4区工程技术

IEEE Photonics Journal Pub Date : 2025-01-02 DOI: 10.1109/JPHOT.2024.3525047

Chengwen Xing;Yue Li;Tianyao Xu;Zhichao Li;Fanchao Meng;Xiongfei Yin;Lingqiang Meng;Jianjun Jia

引用次数: 0

OCDMA-Based LiDAR Systems: Reducing False Alarm Probabilities in Autonomous Driving 基于 OCDMA 的激光雷达系统：降低自动驾驶中的误报概率

IF 2.1 4区工程技术

IEEE Photonics Journal Pub Date : 2024-12-31 DOI: 10.1109/JPHOT.2024.3524410

Tianliang Zeng;Jianhua Ji;Leiming Sun;Yufeng Song

{"title":"OCDMA-Based LiDAR Systems: Reducing False Alarm Probabilities in Autonomous Driving","authors":"Tianliang Zeng;Jianhua Ji;Leiming Sun;Yufeng Song","doi":"10.1109/JPHOT.2024.3524410","DOIUrl":"https://doi.org/10.1109/JPHOT.2024.3524410","url":null,"abstract":"In this paper, based on the geometric model of mutual interference between LiDAR systems, and according to the Lambert surface radiation law of objects, the expression of the optical power of the reflected signal received by the jamming user is theoretically derived. The effects of interfering user distance and angle of incidence on system performance are analyzed. On this basis, the Optical Code Division Access(OCDMA) technology is used to improve the false alarm probability of the system, and the results show that the use of OCDMA technology can greatly improve the false alarm probability of the system under the condition that the performance of its own probability of detection is not greatly reduced. When the self detection distance and interference distance are both 50 m, the probability of detection remains above 98% after using OCDMA technology, while the false alarm probability decreases from 90% to 2% . Finally, OptiSystem and Matlab were used to simulate and verify the OCDMA LiDAR system, and the simulation values and theoretical values of the system's false alarm probability performance under different interference distances were compared.","PeriodicalId":13204,"journal":{"name":"IEEE Photonics Journal","volume":"17 1","pages":"1-7"},"PeriodicalIF":2.1,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10818717","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143489282","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Polarization Imaging Descattering Based on Dark Channel Prior Background Light Estimation 基于暗通道先验背景光估计的偏振成像散射

IF 2.1 4区工程技术

IEEE Photonics Journal Pub Date : 2024-12-26 DOI: 10.1109/JPHOT.2024.3523328

Jiarui Zhang;Yaxin Cai;Ming Fang

{"title":"Polarization Imaging Descattering Based on Dark Channel Prior Background Light Estimation","authors":"Jiarui Zhang;Yaxin Cai;Ming Fang","doi":"10.1109/JPHOT.2024.3523328","DOIUrl":"https://doi.org/10.1109/JPHOT.2024.3523328","url":null,"abstract":"In turbid water environments, conventional polari-metric imaging descattering methods usually rely on selecting a non-target background region as a substitute for global back-ground light information, leading to image clarity. By integrating polarization imaging with the dark channel prior (DCP) and fully utilizing the polarization information from the Stokes vector and the DCP, the interference of the target information in calculating the background information can be effectively eliminated. This method also enables accurate estimation of the global distribution for the degree of polarization (DoP) and the angle of polarization (AoP) of the backscattered light and eliminates the need for the complex process of background region selection. Experimental results with varying turbid water concentrations demonstrate the proposed method's effectiveness for target recovery in both underwater images with and without background regions. Compared with the conventional active polarization imaging model, our method improves image contrast by 47% in the strongly scattering environment.","PeriodicalId":13204,"journal":{"name":"IEEE Photonics Journal","volume":"17 1","pages":"1-9"},"PeriodicalIF":2.1,"publicationDate":"2024-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10816622","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142975939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Spectra Narrowing of a 976 nm High Power External-Cavity Semiconductor Laser Based on a Transmission Grating 基于透射光栅的976 nm高功率外腔半导体激光器的光谱窄化

IF 2.1 4区工程技术

IEEE Photonics Journal Pub Date : 2024-12-25 DOI: 10.1109/JPHOT.2024.3521615

Di Xin;Nihui Zhang;Lingqian Meng;Qinghao Zhao;Weiqiao Zhang;Fengxin Dong;Xuyan Zhou;Hongbo Zhang;Wanhua Zheng

引用次数: 0

Performance Improvement of GaN-Based Vertical-Cavity Surface-Emitting Lasers by Using Tapered SiO2-Buried Structure 采用锥形sio2埋层结构改善gan基垂直腔面发射激光器性能

IF 2.1 4区工程技术

IEEE Photonics Journal Pub Date : 2024-12-25 DOI: 10.1109/JPHOT.2024.3522498

Rongbin Xu;Yachao Wang;Mingchao Fang;Yang Mei;Leiying Ying;Daquan Yu;Baoping Zhang

{"title":"Performance Improvement of GaN-Based Vertical-Cavity Surface-Emitting Lasers by Using Tapered SiO2-Buried Structure","authors":"Rongbin Xu;Yachao Wang;Mingchao Fang;Yang Mei;Leiying Ying;Daquan Yu;Baoping Zhang","doi":"10.1109/JPHOT.2024.3522498","DOIUrl":"https://doi.org/10.1109/JPHOT.2024.3522498","url":null,"abstract":"In GaN-based vertical-cavity surface-emitting lasers (VCSELs) with insulator-buried structure, the strong index guiding will introduce higher order modes. In this paper, we present a novel GaN-based VCSEL with a tapered SiO\u0000<sub>2</sub>\u0000-buried structure by numerical simulations. Compared to conventional flat aperture VCSELs, tapered aperture VCSELs show the lower threshold current and higher slope efficiency, and can be attributed to the improvement of current distribution within the current injection aperture. Moreover, by adjusting the taper length, the current distribution in current injection aperture can be further changed, enabling single fundamental mode lasing. Additionally, the modulation bandwidth for tapered aperture VCSELs will also increase due to the reduction of parasitic capacitance. This research guides the development of high performance GaN VCSELs capable of achieving single transverse mode and high modulation rates for visible optical communication links and networks.","PeriodicalId":13204,"journal":{"name":"IEEE Photonics Journal","volume":"17 1","pages":"1-5"},"PeriodicalIF":2.1,"publicationDate":"2024-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10815608","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142938234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0