IEEE Photonics Journal最新文献_第8页

Extension of the CNN-Based Demodulation Method for Image Sensor-Based Visible Light Communication Considering Real Image Parameters 考虑真实图像参数的基于cnn的图像传感器可见光通信解调方法的扩展

IF 2.1 4区工程技术

IEEE Photonics Journal Pub Date : 2025-03-15 DOI: 10.1109/JPHOT.2025.3570723

Yuki Iyoda;Kentaro Kobayashi;Chedlia Ben Naila;Hiraku Okada

{"title":"Extension of the CNN-Based Demodulation Method for Image Sensor-Based Visible Light Communication Considering Real Image Parameters","authors":"Yuki Iyoda;Kentaro Kobayashi;Chedlia Ben Naila;Hiraku Okada","doi":"10.1109/JPHOT.2025.3570723","DOIUrl":"https://doi.org/10.1109/JPHOT.2025.3570723","url":null,"abstract":"This paper proposes a convolutional neural network (CNN)-based demodulation method to enhance the performance of visible light communication (VLC) between digital signage and mobile terminals such as smartphones. Unlike conventional methods, the proposed approach employs a sliding window mechanism to enable flexible demodulation of data signals of arbitrary size by scanning a compact CNN trained to demodulate <inline-formula><tex-math>$3 times 3$</tex-math></inline-formula> data signal cells. The model also incorporates spatial context from surrounding cells to improve robustness against inter-symbol interference. To ensure adaptability to real-world conditions, the CNN is trained using simulated received images that reproduce degradation effects—such as noise, blur, and displacement—extracted from actual captured images. The proposed method is evaluated in an indoor experimental setup using an OLED display and a USB camera, replicating a practical communication scenario between signage and an image sensor. Communication experiments were conducted using 24 monochromatic background colors from the Macbeth Color Chart with varying signal intensities applied to the Cb component in the YCbCr color space. The results show that the proposed method significantly outperforms the conventional threshold-based demodulation approach, particularly under low signal intensity conditions, thereby demonstrating its effectiveness for practical applications.","PeriodicalId":13204,"journal":{"name":"IEEE Photonics Journal","volume":"17 3","pages":"1-11"},"PeriodicalIF":2.1,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11005729","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144179173","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

An Adaptive Threshold Updating Algorithm for PMT-Based Ultraviolet Communication 基于pmt的紫外通信自适应阈值更新算法

IF 2.1 4区工程技术

IEEE Photonics Journal Pub Date : 2025-03-14 DOI: 10.1109/JPHOT.2025.3570394

Jingyang Chen;Yuan Ren;Fei Long;Lingfeng Li;Weijie Liu;Jian Chen;Dezhi Yang;Chen Gong;Zhengyuan Xu

{"title":"An Adaptive Threshold Updating Algorithm for PMT-Based Ultraviolet Communication","authors":"Jingyang Chen;Yuan Ren;Fei Long;Lingfeng Li;Weijie Liu;Jian Chen;Dezhi Yang;Chen Gong;Zhengyuan Xu","doi":"10.1109/JPHOT.2025.3570394","DOIUrl":"https://doi.org/10.1109/JPHOT.2025.3570394","url":null,"abstract":"To address varying environmental conditions, this paper proposes an adaptive threshold updating algorithm for photomultiplier tube (PMT) signals in ultraviolet (UV) communication. The receiver maintains a set of pulse detection thresholds and performs channel estimation for each threshold. Using the channel estimation of both signal and background radiation components, we introduce a method to estimate the bit error rate (BER) corresponding to each threshold. Additionally, an adaptive threshold selection system is developed to dynamically update signal detection in response to changing environments. The accuracy of the optimal detection threshold is experimentally evaluated. The effectiveness of the proposed adaptive threshold algorithm is validated through indoor experiments, where trends in channel estimation results, detection thresholds, and frame error rates (FER) are recorded. Moreover, an outdoor experiment is conducted to verify the algorithm's performance under sunlight. The experimental results demonstrate that the adaptive threshold algorithm effectively adjusts the pulse detection threshold based on the current channel state, ensuring robust communication performance in dynamic channel conditions.","PeriodicalId":13204,"journal":{"name":"IEEE Photonics Journal","volume":"17 3","pages":"1-10"},"PeriodicalIF":2.1,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11004428","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144125649","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

Photonics Breakthroughs 2024: Large-Viewing-Angle Light Field 3D Display Based on High-Precision Beam Directionality 光子学突破2024：基于高精度光束方向性的大视角光场3D显示

IF 2.1 4区工程技术

IEEE Photonics Journal Pub Date : 2025-03-14 DOI: 10.1109/JPHOT.2025.3551384

Cheng-Bo Zhao;Yi-Jian Liu;Yuan-Yi Huang;Xiao-Tian Zhang;Yan Xing;Qiong-Hua Wang

{"title":"Photonics Breakthroughs 2024: Large-Viewing-Angle Light Field 3D Display Based on High-Precision Beam Directionality","authors":"Cheng-Bo Zhao;Yi-Jian Liu;Yuan-Yi Huang;Xiao-Tian Zhang;Yan Xing;Qiong-Hua Wang","doi":"10.1109/JPHOT.2025.3551384","DOIUrl":"https://doi.org/10.1109/JPHOT.2025.3551384","url":null,"abstract":"Light field 3D display technology provides viewers with a highly realistic stereoscopic visual experience and achieves authentic and comfortable glasses-free 3D display effects. In recent years, it has become a prominent research focus in the field of display technology. However, light field 3D display is still constrained by the challenges of limited viewing angle and resolution, which significantly impede its advancement. This paper presents a large-viewing-angle light field 3D display based on high-precision beam directionality. To enhance the resolution of 3D images within large viewing range, a highly directional light beam with a divergence angle of ±2.7° is achieved by optimizing the display light sources with a compound microlens array. Additionally, a lenticular lens array is employed to reconstruct densely arranged light fields and achieve a large viewing angle. In the experiments, a 100° viewing angle is achieved and it maintains correct geometric occlusion relationships and smooth motion parallax. In addition, the display has a compact architecture and is suitable for the full-color and switchable dynamic light field 3D display with refresh rate of 30 Hz. We expect the proposed display will contribute to the further development of light field 3D displays.","PeriodicalId":13204,"journal":{"name":"IEEE Photonics Journal","volume":"17 3","pages":"1-7"},"PeriodicalIF":2.1,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10925629","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143835462","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

High Numerical-Aperture Solarization-Resistant Silica-Glass Air-Cladding Fiber Bundle for the Ultraviolet Imaging 用于紫外成像的高数值孔径抗日晒硅玻璃空气包层光纤束

IF 2.1 4区工程技术

IEEE Photonics Journal Pub Date : 2025-03-14 DOI: 10.1109/JPHOT.2025.3570388

Bingsheng Xu;Chaochao Shen;Henan Shen;Yirui Zang;Yanchi Wang;Yan Liu;Xin Lin;Fei Yu

引用次数: 0

Adaptive Beam Steering and Divergence Control for Underwater Optical Wireless Communication Using Reinforcement Learning 基于强化学习的水下无线光通信自适应波束转向与发散控制

IF 2.1 4区工程技术

IEEE Photonics Journal Pub Date : 2025-03-13 DOI: 10.1109/JPHOT.2025.3569824

Takumi Ishida;Chedlia Ben Naila;Hiraku Okada

{"title":"Adaptive Beam Steering and Divergence Control for Underwater Optical Wireless Communication Using Reinforcement Learning","authors":"Takumi Ishida;Chedlia Ben Naila;Hiraku Okada","doi":"10.1109/JPHOT.2025.3569824","DOIUrl":"https://doi.org/10.1109/JPHOT.2025.3569824","url":null,"abstract":"Underwater optical wireless communication (UOWC) is a promising technology enabling high-speed, low-latency communication for beyond 5G/6G systems. However, UOWC faces significant challenges due to the complex nature of the underwater channel, including absorption, scattering, turbulence, and dynamic sea wave conditions, which complicate static analysis. To address these challenges, we propose a neural network-based beam adaptation technique for UOWC systems, combining deep Q-networks (DQN) and long short-term memory (LSTM) models. These models dynamically optimize beam divergence and steering angles based on the properties of sea waves. Our approach offers a robust solution to maintaining communication quality in diverse and challenging underwater environments. In this work, the turbulence is modeled using the exponential generalized gamma (EGG) distribution, which provides an excellent fit for various types of turbulence. Simulation results show that the proposed LSTM-DQN-based approach consistently outperforms fixed-beam, DQN-only, and heuristic methods in a range of underwater environments. The system successfully compensates for random vessel movements and turbulence-induced intensity fluctuations, ensuring reliable communication. These results highlight the effectiveness of the LSTM-DQN-based method in optimizing beam alignment under various water conditions. Furthermore, a comparison with other machine learning (ML) methods revealed that similar performance can be achieved with those techniques. However, the proposed method demonstrated superior stability. By accounting for variations in vessel size and the movement of the transmitter, we have shown that the proposed method is effective under different environmental conditions.","PeriodicalId":13204,"journal":{"name":"IEEE Photonics Journal","volume":"17 3","pages":"1-10"},"PeriodicalIF":2.1,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11003393","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144148140","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

Digital Interferometric Open Loop Phase Recovery in a Fiber Optic Gyroscope 光纤陀螺数字干涉开环相位恢复

IF 2.1 4区工程技术

IEEE Photonics Journal Pub Date : 2025-03-13 DOI: 10.1109/JPHOT.2025.3551278

Paul G. Sibley;Justin Wong;Malcolm B. Gray;Jong H. Chow;Chathura P. Bandutunga

引用次数: 0

Generation of Tunable Correlated Frequency Comb via Four-Wave-Mixing in Optical Fibers 光纤中四波混频产生可调谐相关频率梳

IF 2.1 4区工程技术

IEEE Photonics Journal Pub Date : 2025-03-12 DOI: 10.1109/JPHOT.2025.3550712

Aryan Bhardwaj;Debanuj Chatterjee;Ashutosh Kumar Singh;Anil Prabhakar

引用次数: 0

PV Polaris – Automated PV System Orientation Prediction PV Polaris -自动化PV系统方向预测

IF 2.1 4区工程技术

IEEE Photonics Journal Pub Date : 2025-03-12 DOI: 10.1109/JPHOT.2025.3568887

Ernst Wittmann;Claudia Buerhop-Lutz;Savannah Bennett;Vincent Christlein;Jens Hauch;Christoph J. Brabec;Ian Marius Peters

{"title":"PV Polaris – Automated PV System Orientation Prediction","authors":"Ernst Wittmann;Claudia Buerhop-Lutz;Savannah Bennett;Vincent Christlein;Jens Hauch;Christoph J. Brabec;Ian Marius Peters","doi":"10.1109/JPHOT.2025.3568887","DOIUrl":"https://doi.org/10.1109/JPHOT.2025.3568887","url":null,"abstract":"The orientation of a photovoltaic system is an important parameter for power generation and yield predictions. Yet often, the real orientation is unknown. Measuring the orientation manually is time-consuming. This study introduces an automated Monte Carlo Search based algorithm called PV Polaris which is capable of predicting the systems orientation within 18 s, with uncertainties of less than 2° in tilt and 4° in azimuth. In terms of accuracy, PV Polaris outperforms other methods such as measurements with a tilt compensated compass or predictions from satellite images. Applicable at module, string and inverter levels, the algorithm only requires power monitoring data as well as an approximate coordinate as input. Additionally, the algorithm can operate inversely to estimate the system's coordinates based on a given orientation. By using this orientation prediction, it was possible to calculate the yearly yield loss due to non-ideal orientation. For photovoltaic systems we investigated, we found that yearly yield increases between 2.3% to 10.3% could be achieved if the PV systems orientation would be optimized.","PeriodicalId":13204,"journal":{"name":"IEEE Photonics Journal","volume":"17 3","pages":"1-7"},"PeriodicalIF":2.1,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10999083","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144255649","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

Micro-Fabricated Compact Extrinsic Fabry-Perot Sensor for In-Situ Harsh Environment Acoustic Measurement 用于原位恶劣环境声学测量的微型紧凑型外源法布里-珀罗传感器

IF 2.1 4区工程技术

IEEE Photonics Journal Pub Date : 2025-03-12 DOI: 10.1109/JPHOT.2025.3569540

Qi Xi;Binghe Ma;Zhiyong Tian;Ruofei Li;Yinan Wang;Zhibo Ma

{"title":"Micro-Fabricated Compact Extrinsic Fabry-Perot Sensor for In-Situ Harsh Environment Acoustic Measurement","authors":"Qi Xi;Binghe Ma;Zhiyong Tian;Ruofei Li;Yinan Wang;Zhibo Ma","doi":"10.1109/JPHOT.2025.3569540","DOIUrl":"https://doi.org/10.1109/JPHOT.2025.3569540","url":null,"abstract":"This paper presents a compact extrinsic Fabry-Perot acoustic sensor. The key component of this sensor is a SOI chip with acoustic sensing Si diaphragm of 5 mm diameter and <inline-formula><tex-math>$2,{rm{mu m}}$</tex-math></inline-formula> thickness, which is obtained by micro fabrication process. Acoustic calibration experiment indicates that the sensor exhibits a frequency response range over 100 Hz-20 kHz, and a sensitivity of <inline-formula><tex-math>${95},{rm{.73mV/Pa}}$</tex-math></inline-formula>. High temperature plane wave tube is established for experiment that simulates the acoustic field in harsh environment, indicating that the sensor is able to realize acoustic sensing with ambient temperature up to <inline-formula><tex-math>${589},^circ mathrm{C}$</tex-math></inline-formula>. The prospect of our proposed sensor is realizing multi-point, in-situ acoustic measurement in harsh environment of aerospace engine internal flow field, enabled by its batch fabrication process and high compactness as well as sensitivity, which we believe will shows great potential in significant industrial domains.","PeriodicalId":13204,"journal":{"name":"IEEE Photonics Journal","volume":"17 3","pages":"1-7"},"PeriodicalIF":2.1,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11002598","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144243869","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

Experimental Demonstration of Superimposed Data Transmission in Rolling Shutter Based Visible Light Communication 基于卷帘门的可见光通信中叠加数据传输的实验演示

IF 2.1 4区工程技术

IEEE Photonics Journal Pub Date : 2025-03-12 DOI: 10.1109/JPHOT.2025.3568891

Masayuki Kinoshita;Ryuto Maeda;Koji Kamakura;Takaya Yamazato

{"title":"Experimental Demonstration of Superimposed Data Transmission in Rolling Shutter Based Visible Light Communication","authors":"Masayuki Kinoshita;Ryuto Maeda;Koji Kamakura;Takaya Yamazato","doi":"10.1109/JPHOT.2025.3568891","DOIUrl":"https://doi.org/10.1109/JPHOT.2025.3568891","url":null,"abstract":"This study aims to provide adaptability to changes in the communication distance of rolling shutter based visible light communication (RS-VLC). A key issue in RS-VLC is the trade-off between the data rate and communication distance. To resolve this issue, we propose a superimposed data transmission method in which two sets of data, namely short- and long-range data, are superimposed and transmitted simultaneously. Short-range data are transmitted in long-bit sequences with a small number of iterations, whereas long-range data are transmitted in short-bit sequences with a large number of iterations. These two datasets can be separately decoded at the receiver by superimposing and transmitting them at different amplitudes. The proposed method can decode all the superimposed data at short ranges, thus suppressing data rate degradation. As the communication distance increases, the proposed method decodes only the available data, allowing for data reception over longer ranges, albeit at a lower data rate. We further extend the proposed method by adding a third set of data, namely mid-range data, for further flexibility in communication distance and data rate. The experimental results show that the proposed method achieves data reception over a longer distance (up to 150 cm) while suppressing throughput degradation at short-ranges, that is, it mitigates the trade-off between the data rate and communication distances compared to conventional <inline-formula><tex-math>$M$</tex-math></inline-formula>-ary pulse amplitude modulation systems.","PeriodicalId":13204,"journal":{"name":"IEEE Photonics Journal","volume":"17 3","pages":"1-11"},"PeriodicalIF":2.1,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10999103","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144123354","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