IEEE Photonics Journal最新文献_第8页

Meijer-G Function With Continued Product and Integer Exponent: Performance of Multi-Aperture UOWC System Over EGG Turbulence 具有连续积和整数指数的Meijer-G函数：多孔径UOWC系统在EGG湍流中的性能

IF 2.1 4区工程技术

IEEE Photonics Journal Pub Date : 2024-12-24 DOI: 10.1109/JPHOT.2024.3521430

Arvind Kumar;Nikumani Choudhury;Jayendra N. Bandyopadhyay;S. M. Zafaruddin

{"title":"Meijer-G Function With Continued Product and Integer Exponent: Performance of Multi-Aperture UOWC System Over EGG Turbulence","authors":"Arvind Kumar;Nikumani Choudhury;Jayendra N. Bandyopadhyay;S. M. Zafaruddin","doi":"10.1109/JPHOT.2024.3521430","DOIUrl":"https://doi.org/10.1109/JPHOT.2024.3521430","url":null,"abstract":"Signal transmission over underwater optical wireless communication (UOWC) experiences the combined effect of oceanic turbulence and pointing errors statistically modeled using the sum of two Meijer-G functions. There is a research gap in the exact statistical analysis of multi-aperture UOWC systems that use selection combining diversity techniques to enhance performance compared to single-aperture systems. In this paper, we develop a general framework for the continued product and positive integer exponent for the sum of Meijer-G functions to analyze the exact statistical performance of the UOWC system in terms of multivariate Fox-H function for both independent and non-identically distributed (i.ni.d.) and independent and identically distributed (i.i.d.) channels. We also approximate the performance of a multi-aperture UOWC system with i.i.d. channels using the single-variate Fox-H function. Using the generalized approach, we present analytical expressions for average bit-error rate (BER) and ergodic capacity for the considered system operating over exponential–generalized gamma (EGG) oceanic turbulence combined with zero-boresight pointing errors. We also develop asymptotic expressions for the average BER at a high signal-to-noise (SNR) to capture insights into the system's performance. Our simulation findings confirm the accuracy of our derived expressions and illustrate the impact of turbulence parameters for i.ni.d. and i.i.d. models for the average BER and ergodic capacity, which may provide a better estimate for the efficient deployment of UOWC.","PeriodicalId":13204,"journal":{"name":"IEEE Photonics Journal","volume":"17 2","pages":"1-15"},"PeriodicalIF":2.1,"publicationDate":"2024-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10814056","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143480812","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

Transponder Aggregator for CDC-ROADM Nodes Supporting S-U Bands and 32/64-WDM Ports 用于CDC-ROADM节点的转发器聚合器，支持S-U频段和32/64-WDM端口

IF 2.1 4区工程技术

IEEE Photonics Journal Pub Date : 2024-12-23 DOI: 10.1109/JPHOT.2024.3520988

Keita Yamaguchi;Kenya Suzuki;Osamu Moriwaki

{"title":"Transponder Aggregator for CDC-ROADM Nodes Supporting S-U Bands and 32/64-WDM Ports","authors":"Keita Yamaguchi;Kenya Suzuki;Osamu Moriwaki","doi":"10.1109/JPHOT.2024.3520988","DOIUrl":"https://doi.org/10.1109/JPHOT.2024.3520988","url":null,"abstract":"In response to the rapid growth in traffic, the throughput and handling unit size of optical network nodes have been increasing at a rate of approximately ten times per decade. To achieve such high node throughputs, it is important to expand the wavelength bandwidth and support more WDM fibers. Therefore, the transponder aggregator (TPA) that provides the colorless, directionless, and contentionless (CDC) function of the network node also needs to respond to these changes. As a TPA suitable for such ultra-high throughput reconfigurable optical add/drop multiplexing (ROADM) nodes, we propose a multicast switch (MCS) that consists of 1 × N splitters and M × 1 switches facing each other and utilizes a silica-based planar lightwave circuit (PLC) platform. The CDC-ROADM nodes have a trade-off between the number of connected WDM fibers and the number of transponders that can be accommodated by a single TPA. Therefore, increasing the WDM fibers results in a decrease in the transponders that can be accommodated by a single MCS, but at the same time reduces the splitting loss in that switch. As a result, the number of optical amplifiers used for add/drop functions can be reduced. In addition, because the handling unit is larger, the increase in the number of required MCS units is limited, and highly integrated PLC-based MCSs become practical. In this paper, we demonstrate MCSs supporting 300-nm bandwidth and 32- and 64-degree nodes for the first time ever. The insertion loss of the prototype was less than 8.0 dB in all paths, including connections with common single-mode fiber, and the extinction ratio was greater than 40 dB.","PeriodicalId":13204,"journal":{"name":"IEEE Photonics Journal","volume":"17 1","pages":"1-7"},"PeriodicalIF":2.1,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10812056","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142905757","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

Monocular 3D Micro-PIV System Using Computational Imaging 基于计算成像的单目三维微piv系统

IF 2.1 4区工程技术

IEEE Photonics Journal Pub Date : 2024-12-18 DOI: 10.1109/JPHOT.2024.3520163

Taiyuange Lou;Chengxiang Guo;Tong Yang;Lei Yang;Hongbo Xie

{"title":"Monocular 3D Micro-PIV System Using Computational Imaging","authors":"Taiyuange Lou;Chengxiang Guo;Tong Yang;Lei Yang;Hongbo Xie","doi":"10.1109/JPHOT.2024.3520163","DOIUrl":"https://doi.org/10.1109/JPHOT.2024.3520163","url":null,"abstract":"A three-dimensional (3D) particle image velocimetry (PIV) system typically consists of multiple cameras. However, micro-PIV systems for measuring microscale velocity fields lack sufficient space to accommodate them. In this work we propose an alternative approach based on computational imaging, enabling monocular micro-PIV systems to perform 3D flow field measurements without additional hardware or complex structure. The microscopic objective is designed to satisfy the required parameters, and the point spread function (PSF) responses of the system to different depths of the object surface are obtained. Additionally, a particle dataset generation method based on the PSFs of the optical system is proposed, and a deep-learning network is constructed for training. To validate the feasibility, particle images are captured in experiments and inputted into the network to reconstruct depth images and build three-dimensional flow fields. Simulation and experimental results demonstrate that the measurement deviation is within 13.2%, indicating the practicality of the proposed model.","PeriodicalId":13204,"journal":{"name":"IEEE Photonics Journal","volume":"17 1","pages":"1-9"},"PeriodicalIF":2.1,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10806749","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142905758","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

Constellation Optimization for MIMO VLC System With Signal-Dependent Noise: Receiver-Side Design and Lookup Table Establishment 具有信号相关噪声的MIMO VLC系统星座优化：接收机侧设计和查找表建立

IF 2.1 4区工程技术

IEEE Photonics Journal Pub Date : 2024-12-16 DOI: 10.1109/JPHOT.2024.3518583

Jiaqi Wei;Yuan Wang;Nuo Huang;Yan-Yu Zhang;Yi-Jun Zhu;Wenliang Hao;Chen Gong

引用次数: 0

A Compact and Broadband Splitter to Interface Between Strip and Slot Waveguides 一种紧凑的宽带分频器，用于连接条形波导和槽形波导

IF 2.1 4区工程技术

IEEE Photonics Journal Pub Date : 2024-12-16 DOI: 10.1109/JPHOT.2024.3518299

Devika Padmakumar Nair;Michaël Ménard

引用次数: 0

Deploying the Qline System for a QKD Metropolitan Network on the Berlin OpenQKD Testbed 在柏林OpenQKD试验台上部署QKD城域网Qline系统

IF 2.1 4区工程技术

IEEE Photonics Journal Pub Date : 2024-12-12 DOI: 10.1109/JPHOT.2024.3516138

Matheus Sena;Georg Harder;Ronny Döring;Ralf-Peter Braun;Michaela Ritter;Oliver Holschke;Marc Kaplan;Marc Geitz

{"title":"Deploying the Qline System for a QKD Metropolitan Network on the Berlin OpenQKD Testbed","authors":"Matheus Sena;Georg Harder;Ronny Döring;Ralf-Peter Braun;Michaela Ritter;Oliver Holschke;Marc Kaplan;Marc Geitz","doi":"10.1109/JPHOT.2024.3516138","DOIUrl":"https://doi.org/10.1109/JPHOT.2024.3516138","url":null,"abstract":"Quantum Key Distribution (QKD) systems have the potential to provide secure communication by offering unconditionally secure key exchange between distant parties. However, the integration of QKD into existing communication networks presents challenges, particularly when it comes to the deployment of trusted nodes and the establishment of secure connections over metropolitan distances. In this study, we present a novel approach to address these issues by introducing a trusted-node-free design on a metropolitan scale for the seamless integration of a QKD system into the Berlin OpenQKD optical fiber testbed. Our innovative design leverages conventional telecom modulators and a standard Wavelength-Division Multiplexing - Arrayed Waveguide Grating (WDM-AWG), offering a practical solution for flexible multi-partner communication and enabling full connectivity between non-adjacent nodes. In this study, we not only observed relatively low QBER (\u0000<inline-formula><tex-math>$< $</tex-math></inline-formula>\u0000 5.5%) but also a rather stable key rate between nodes in the Qline system over approximately 130 hours (\u0000<inline-formula><tex-math>$approx$</tex-math></inline-formula>\u0000 5.4 days) for a lab-based back-to-back setup. Later on, a more complex experimental scheme is integrated into Berlin OpenQKD optical fiber testbed encompassing multiple C-band frequencies (191.75–195.75 THz) and extending over metropolitan distances (up to 39.8 km), providing a foundation for secure quantum communication networks with enhanced scalability and versatility.","PeriodicalId":13204,"journal":{"name":"IEEE Photonics Journal","volume":"17 1","pages":"1-11"},"PeriodicalIF":2.1,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10795138","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142938196","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

Time Delay Signature Extraction of Optical Time-Delay Chaos Systems From Short and Noisy Time Series 从短噪声时间序列中提取光时延混沌系统的时延特征

IF 2.1 4区工程技术

IEEE Photonics Journal Pub Date : 2024-12-12 DOI: 10.1109/JPHOT.2024.3516115

Shuhui Gong;Jing Zhu;Shiyuan Chen;Jun Wang;Mengfan Cheng;Xiaojing Gao

引用次数: 0

Piezo-Actuated Distributed Bragg Reflector–Based Tunable Fabry–Pérot Filter for Visible Light Hyperspectral Imaging 基于压电驱动分布式Bragg反射镜的可见光高光谱成像可调谐fabry - psamro滤波器

IF 2.1 4区工程技术

IEEE Photonics Journal Pub Date : 2024-12-11 DOI: 10.1109/JPHOT.2024.3515468

Pratyasha Sahani;Yoshiaki Kanamori

{"title":"Piezo-Actuated Distributed Bragg Reflector–Based Tunable Fabry–Pérot Filter for Visible Light Hyperspectral Imaging","authors":"Pratyasha Sahani;Yoshiaki Kanamori","doi":"10.1109/JPHOT.2024.3515468","DOIUrl":"https://doi.org/10.1109/JPHOT.2024.3515468","url":null,"abstract":"A tunable air-gap Fabry–Pérot filter consisting of distributed Bragg reflectors as cavity mirrors was developed to operate in the visible wavelength range. The wavelength tunability of the filter was achieved based on the piezo actuation mechanism. Four in-plane identical piezo actuators were employed to simultaneously achieve both wavelength tunability and cavity air-gap parallelism in the filter. Two pairs of piezo actuators positioned at crossed locations enabled independent control of cavity air-gap dimensions along orthogonal directions in the cavity plane. Optical transmission measurements were performed at different spatial positions on the cavity region to estimate the cavity air-gap dimensions. The initial maximum spectral separation among different spatial positions owing to the initial non-parallelism of the cavity air gap was estimated to be ∼28 nm. After achieving cavity air-gap parallelism via piezo actuation, the final maximum spectral separation was reduced to ∼3 nm. The proposed device configuration significantly improved the cavity air-gap parallelism by minimizing the maximum variation of the cavity air-gap dimension from an initial value of 535 nm to a final value of 18 nm, resulting in an improvement by a factor of ∼30. This device prototype can enable high-resolution and high-throughput spectral transmission with improved spatial uniformity across a large cavity area, showing great promise for advancing hyperspectral imaging systems.","PeriodicalId":13204,"journal":{"name":"IEEE Photonics Journal","volume":"17 1","pages":"1-10"},"PeriodicalIF":2.1,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10791869","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142905866","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

Complex-Valued CNN Nonlinear Equalization Enabled 36-Tbit/s (45×800-Gbit/s) WDM Transmission Over 3150 Km Using Silicon-Based IC-TROSA 利用硅基 IC-TROSA 实现复值 CNN 非线性均衡，使 36-Tbit/s (45×800-Gbit/s) 波分复用传输超过 3150 Km

IF 2.1 4区工程技术

IEEE Photonics Journal Pub Date : 2024-12-04 DOI: 10.1109/JPHOT.2024.3510791

Yuhan Gong;Xiaoshuo Jia;Ying Zhu;Kailai Liu;Ming Luo;Jin Tao;Zhixue He;Chao Li;Zichen Liu;Yan Li;Jian Wu;Chao Yang

{"title":"Complex-Valued CNN Nonlinear Equalization Enabled 36-Tbit/s (45×800-Gbit/s) WDM Transmission Over 3150 Km Using Silicon-Based IC-TROSA","authors":"Yuhan Gong;Xiaoshuo Jia;Ying Zhu;Kailai Liu;Ming Luo;Jin Tao;Zhixue He;Chao Li;Zichen Liu;Yan Li;Jian Wu;Chao Yang","doi":"10.1109/JPHOT.2024.3510791","DOIUrl":"https://doi.org/10.1109/JPHOT.2024.3510791","url":null,"abstract":"The growing Internet traffic urgently needs large-capacity and cost-effective optical transmissions. To maintain system performance under low-cost conditions, the silicon-based integrated coherent transmit and receive optical sub-assembly (IC-TROSA) and the complex-valued convolutional neural network (CVCNN) algorithm provide an effective solution for high-capacity and long-distance WDM optical transmission. The proposed CVCNN can improve the system performance under nonlinear damage conditions, which fully considers the orthogonality of IQ signals in this paper. This algorithm exhibits different equalization performances for 64QAM signals under various encoding schemes considering 20%-overhead, achieving up to 2dB maximum decrease in the required optical signal-to-noise ratio at the optical back-to-back case. Regarding transmission distance, employing CVCNN extends the maximum reach from 3500 km to 3850 km. The paper also demonstrates the application of CVCNN in WDM systems, enhancing system performance across different WDM encoding schemes. Finally, the experiment verified that CVCNN requires fewer computational resources than real-valued convolutional neural networks (RVCNN).","PeriodicalId":13204,"journal":{"name":"IEEE Photonics Journal","volume":"17 1","pages":"1-8"},"PeriodicalIF":2.1,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10777400","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859258","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

Pure Disturbance Sliding-Mode Feedback Control Based on Disturbance Observation for CCD-Assisted Line-of-Sight Stabilization 基于扰动观测的ccd辅助视距稳定纯扰动滑模反馈控制

IF 2.1 4区工程技术

IEEE Photonics Journal Pub Date : 2024-12-04 DOI: 10.1109/JPHOT.2024.3511573

Yong Luo;Yi Cheng;Yongmei Huang;Qiongyan Wu;Dong He;Ge Ren;Guan Wang;Shi Zheng

{"title":"Pure Disturbance Sliding-Mode Feedback Control Based on Disturbance Observation for CCD-Assisted Line-of-Sight Stabilization","authors":"Yong Luo;Yi Cheng;Yongmei Huang;Qiongyan Wu;Dong He;Ge Ren;Guan Wang;Shi Zheng","doi":"10.1109/JPHOT.2024.3511573","DOIUrl":"https://doi.org/10.1109/JPHOT.2024.3511573","url":null,"abstract":"Excellent disturbance rejection ability is essential for a photoelectric tracking system (PTS) based on the Charge-Couple Device (CCD) sensor, which is a premise guarantee for obtaining highly accurate tracking, especially under the condition of moving carriers with intense disturbances. The feedforward control method based on disturbance estimated from the system model output and sensor output is currently a commonly used strategy for disturbance compensation due to its ability to directly counteract the disturbances. This disturbance feedforward compensation method behaves sensitively in case of model mismatch caused by internal disturbances, which may lead to a significant reduction in the disturbance compensation effect or even cause system instability. In this paper, unlike disturbance feedforward compensation, a pure disturbance sliding-mode feedback control (DSMFBC) based on disturbance observation without additional sensors is proposed, ensuring faster and precise compensation for disturbance. In case of model mismatch, the observed disturbance is used to build the disturbance feedback control to maintain a more efficient disturbance compensation through the robustness that feedback naturally possesses. To achieve a stronger anti-disturbance capability, a sliding-mode nonlinear control method is used to design the control law. The experimental setup of PTS based on the fast-steering mirror (FSM) demonstrates that the method has better dynamic performance and disturbance rejection ratio.","PeriodicalId":13204,"journal":{"name":"IEEE Photonics Journal","volume":"17 1","pages":"1-9"},"PeriodicalIF":2.1,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10778198","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859259","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