IEEE Photonics Journal最新文献_第4页

Design and Optimization of an Integrated Visible Light Communication and Localization System Using Liquid Crystal Based-RIS Receivers 基于液晶ris接收机的可见光通信与定位集成系统的设计与优化

IF 2.1 4区工程技术

IEEE Photonics Journal Pub Date : 2025-04-09 DOI: 10.1109/JPHOT.2025.3559061

Raphael Ahiaklo-Kuz;Sylvester Aboagye;Omar Maraqa;Telex M. N. Ngatched

{"title":"Design and Optimization of an Integrated Visible Light Communication and Localization System Using Liquid Crystal Based-RIS Receivers","authors":"Raphael Ahiaklo-Kuz;Sylvester Aboagye;Omar Maraqa;Telex M. N. Ngatched","doi":"10.1109/JPHOT.2025.3559061","DOIUrl":"https://doi.org/10.1109/JPHOT.2025.3559061","url":null,"abstract":"Visible Light Communication (VLC) is emerging as a pivotal technology in next-generation wireless networks, leveraging the abundant unlicensed spectrum to achieve ultra-high data rates with minimal energy overhead. This paper presents the design and optimization of a novel integrated VLC and localization (VLCL) system enhanced by liquid crystal-based reconfigurable intelligent surfaces (LC-RISs). The proposed system architecture facilitates simultaneous communication, localization, and illumination within indoor environments by dynamically adjusting the refractive index of the LC-RIS under an electric field to precisely control light propagation and focus. We address two core optimization challenges: sum rate maximization and energy efficiency maximization, both of which are formulated as constrained optimization problems. While the sum rate problem is convex and solvable using standard optimization techniques, the energy efficiency problem is non-convex, necessitating the development of a low-complexity solution via fractional programming. Simulation results substantiate the efficacy of the LC-RIS in significantly enhancing both sum rate and energy efficiency, particularly in scenarios with dense number of users and access point configurations, thereby demonstrating the LC-RIS's potential to substantially improve the performance of VLCL systems.","PeriodicalId":13204,"journal":{"name":"IEEE Photonics Journal","volume":"17 3","pages":"1-9"},"PeriodicalIF":2.1,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10959088","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143883347","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

Performance Analysis of RIS-Aided Hybrid RF-FSO Communications With Index Modulation 索引调制下ris辅助RF-FSO混合通信性能分析

IF 2.1 4区工程技术

IEEE Photonics Journal Pub Date : 2025-04-09 DOI: 10.1109/JPHOT.2025.3559488

Yuna He;Wenchao Qi;Pengfei Shen;Lu Lu

{"title":"Performance Analysis of RIS-Aided Hybrid RF-FSO Communications With Index Modulation","authors":"Yuna He;Wenchao Qi;Pengfei Shen;Lu Lu","doi":"10.1109/JPHOT.2025.3559488","DOIUrl":"https://doi.org/10.1109/JPHOT.2025.3559488","url":null,"abstract":"This work investigates the performance of a hybrid communication system that integrates radio frequency (RF) and free-space optical (FSO) systems for backhaul networks. In this framework, both the RF and FSO links are enhanced by reconfigurable intelligent surfaces (RISs) and employ index modulation (IM) for link switching. The fading in the RF link is modeled using the Nakagami-m distribution, while the FSO link is affected by attenuation, turbulence, and pointing errors, with turbulence characterized by the Gamma-Gamma distribution. Link switching is performed through index modulation, where the selection of the transmission link conveys information bits. We derive exact closed-form expressions for the probability density function (PDF), cumulative distribution function (CDF), and moment-generating function (MGF) of the signal-to-noise ratio (SNR) for RIS-assisted FSO links. Utilizing these SNR statistics, we compute the outage probability (OP), average bit error rate (ABER), and ergodic capacity (EC) of the proposed hybrid RF/FSO system. In the numerical results, the performance of the proposed hybrid RF/FSO system is compared against other systems, including hybrid systems using index modulation without RISs, RIS-assisted FSO systems, and hybrid systems employing hard switching techniques. Finally, Monte Carlo simulations are carried out to validate the accuracy of the theoretical results.","PeriodicalId":13204,"journal":{"name":"IEEE Photonics Journal","volume":"17 3","pages":"1-17"},"PeriodicalIF":2.1,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10960548","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143883370","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

A High-Speed Fully-Integrated VLC Receiver With Large-Area Photodetector 带大面积光电探测器的高速全集成VLC接收机

IF 2.1 4区工程技术

IEEE Photonics Journal Pub Date : 2025-04-08 DOI: 10.1109/JPHOT.2025.3558931

Sheng Xie;Xiaoxia Hu;Jia Cong

引用次数: 0

A Neural Network-Based Feature Learning and Processing to Estimate Signal-to-Noise Ratio in Coherent Optical Fiber Systems 基于神经网络特征学习与处理的相干光纤系统信噪比估计

IF 2.1 4区工程技术

IEEE Photonics Journal Pub Date : 2025-04-07 DOI: 10.1109/JPHOT.2025.3558516

Mohamed Al-Nahhal;Ibrahim Al-Nahhal;Sunish Kumar Orappanpara Soman;Octavia A. Dobre

{"title":"A Neural Network-Based Feature Learning and Processing to Estimate Signal-to-Noise Ratio in Coherent Optical Fiber Systems","authors":"Mohamed Al-Nahhal;Ibrahim Al-Nahhal;Sunish Kumar Orappanpara Soman;Octavia A. Dobre","doi":"10.1109/JPHOT.2025.3558516","DOIUrl":"https://doi.org/10.1109/JPHOT.2025.3558516","url":null,"abstract":"This paper proposes a novel two-stage neural network (TSNN)-based signal-to-noise ratio (SNR) estimator tailored specifically for coherent optical fiber systems. The proposed TSNN architecture consists of two distinct NN stages. In the first NN stage, a novel technique called feature estimation using NN (FE-NN) is proposed, aiming to decrease the computational complexity by learning feature similarities and estimating some features based on others generated mathematically from the received signal. Subsequent to the FE-NN stage, a second NN stage is meticulously crafted to jointly estimate the linear and nonlinear SNR components with precision. This stage utilizes a novel set of input features generated exclusively from the received signal, without prior knowledge of the transmitted signals. The proposed input features leverage statistical measures such as median absolute deviation, arithmetic mean, and entropy to provide a comprehensive insight into SNR dynamics, thereby enhancing estimation accuracy. A comprehensive analysis of the computational complexity of the proposed TSNN SNR estimator is provided, quantifying the required number of real-valued multiplications and real-valued additions. Performance evaluation of the proposed TSNN estimator is conducted through extensive simulations encompassing 4950 realizations of a standard single-mode fiber wavelength division multiplexing system, employing dual-polarization 16-ary quadrature amplitude modulation. The results underscore the pronounced reduction in computational complexity achieved by the proposed TSNN estimator compared to the most efficient estimators in the literature. Moreover, the proposed TSNN estimator yields superior accuracy in both linear and nonlinear SNR components estimation, thereby highlighting its efficacy in optical communication systems.","PeriodicalId":13204,"journal":{"name":"IEEE Photonics Journal","volume":"17 3","pages":"1-13"},"PeriodicalIF":2.1,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10955113","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143856283","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

Simulation of a GaInP$_{2}$ - GaAs - GaInAsN - Ge Photovoltaic Cell for Space Applications 模拟用于太空应用的 GaInP$_{2}$ - GaAs - GaInAsN - Ge 光伏电池

IF 2.1 4区工程技术

IEEE Photonics Journal Pub Date : 2025-04-04 DOI: 10.1109/JPHOT.2025.3558372

Antoine Fées;Pablo Caron;Inès Revol;Rodolphe Vaillon;Julien Mekki;Thierry Nuns;Guilhem Almuneau

{"title":"Simulation of a GaInP$_{2}$ - GaAs - GaInAsN - Ge Photovoltaic Cell for Space Applications","authors":"Antoine Fées;Pablo Caron;Inès Revol;Rodolphe Vaillon;Julien Mekki;Thierry Nuns;Guilhem Almuneau","doi":"10.1109/JPHOT.2025.3558372","DOIUrl":"https://doi.org/10.1109/JPHOT.2025.3558372","url":null,"abstract":"We use an open-source simulation software to design III-V multi-junction solar cells containing a dilute nitride subcell. We discuss the different modeling techniques in terms of physical models and numerical methods, and provide an educated guess for a GaInP<inline-formula><tex-math>$_{2}$</tex-math></inline-formula> - GaAs - GaInAsN - Ge lattice-matched 4-junction solar cell performance assessment. We suggest a way to ensure an effective computation of the main output values of an open-source Poisson-Drift-Diffusion solver for multi-junction solar cell analysis. An optimization of a multi-junction cell including a n-i-p subcell is performed, starting from basic theoretical considerations, to the use of a double-layer anti-reflective coating to target the most limiting subcell, and then with an optimization of the n-i-p architecture in the 1 eV subcell with respect to the GaInAsN layer properties. We show that the detrimental effects of low diffusion lengths in the GaInAsN layer can be alleviated by taking advantage of field-assisted collection.","PeriodicalId":13204,"journal":{"name":"IEEE Photonics Journal","volume":"17 3","pages":"1-11"},"PeriodicalIF":2.1,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10949845","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143860960","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

All-Optical Inhibitory Dynamics by Backscattering With Unidirectional Injection-Locked Photonic Spiking Neuron 单向注入锁定光子脉冲神经元后向散射的全光抑制动力学

IF 2.1 4区工程技术

IEEE Photonics Journal Pub Date : 2025-04-03 DOI: 10.1109/JPHOT.2025.3557625

Shengyao Zhou;Bowen Ma;Weiwen Zou

{"title":"All-Optical Inhibitory Dynamics by Backscattering With Unidirectional Injection-Locked Photonic Spiking Neuron","authors":"Shengyao Zhou;Bowen Ma;Weiwen Zou","doi":"10.1109/JPHOT.2025.3557625","DOIUrl":"https://doi.org/10.1109/JPHOT.2025.3557625","url":null,"abstract":"Inhibitory dynamics plays an important role in the information processing of biological spiking neurons, where incoming stimuli weaken the activity level of neurons. Due to the lack of prohibitive physical effects in photonics, the realization of the photonic spiking neuron (PSN) with intrinsic inhibitory dynamics and the application of efficient inhibitory dynamics in the optical domain have been challenging. Herein, we propose a PSN with all-optical inhibitory dynamics, which is achieved by intrinsic backscattering from the unidirectional-emitted semi-conductor ring laser (SRL) to the master laser. The photonic spiking dynamics of the SRL operating in unidirectional mode were investigated, demonstrating the computational properties of the PSN as a leaky integrate-and-fire neuron. We prove that as the backscattering intensity increases, the number of spikes generated under the same input signal decreases. Under the influence of backscattering, the number of spikes fired increases with the input signal rate. In the speech signal classification task, the classification accuracy improves from 89% to 94% under the influence of inhibitory dynamics. This suggests that the presence of inhibitory dynamics helps filter out unwanted interference information. The results show the potential of backscattering-based inhibition dynamics for facilitating advanced neuromorphic information processing.","PeriodicalId":13204,"journal":{"name":"IEEE Photonics Journal","volume":"17 3","pages":"1-6"},"PeriodicalIF":2.1,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10948269","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144090736","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

Backflash Attack on Coherent One-Way Quantum Key Distribution 相干单向量子密钥分发中的逆闪攻击

IF 2.1 4区工程技术

IEEE Photonics Journal Pub Date : 2025-04-02 DOI: 10.1109/JPHOT.2025.3557214

Ashutosh Kumar Singh;Nilesh Sharma;Vaibhav Pratap Singh;Anil Prabhakar

引用次数: 0

A Literature Review on Artificial Intelligence in Dermatological Diagnosis and Tissue Microscopy 人工智能在皮肤病学诊断和组织显微镜中的研究综述

IF 2.1 4区工程技术

IEEE Photonics Journal Pub Date : 2025-04-02 DOI: 10.1109/JPHOT.2025.3557447

Paul-Vasile Vezeteu;Andrei-Daniel Andronescu;Dumitru-Iulian Năstac

{"title":"A Literature Review on Artificial Intelligence in Dermatological Diagnosis and Tissue Microscopy","authors":"Paul-Vasile Vezeteu;Andrei-Daniel Andronescu;Dumitru-Iulian Năstac","doi":"10.1109/JPHOT.2025.3557447","DOIUrl":"https://doi.org/10.1109/JPHOT.2025.3557447","url":null,"abstract":"Artificial Intelligence is reshaping dermatological diagnosis and dermatopathology by leveraging computer vision to enable innovative and effective medical approaches. These technologies have the potential to democratize access to high-quality diagnostic tools by providing innovative solutions for analyzing medical images. Dermatological diagnostic processes — such as dermatoscopy, microscopy and smartphone-assisted dermatology — can be paired with AI to support medical experts to enhance accuracy and efficiency. This review systematically surveys the current scientific literature on techniques that employ intelligent systems both for dermatological diagnostics, as well as dermatopathology. Key deep learning methodologies, such as convolutional neural networks (CNNs), transfer learning, and explainable AI, are examined in the context of current medical practices. The analysis also addresses practical challenges, such as image quality, computational constraints, and data privacy. Throughout the review, emerging trends and future directions are identified, such as AI-integration as an assisting technology, and microscopy as a facilitator for intelligent system development in global healthcare. This paper aims to provide a comprehensive resource for researchers and practitioners, encouraging interdisciplinary collaboration to advance the diagnosis of dermatological conditions in both dermatology and dermatopathology.","PeriodicalId":13204,"journal":{"name":"IEEE Photonics Journal","volume":"17 3","pages":"1-14"},"PeriodicalIF":2.1,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10948126","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143835463","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 1 μm Dual-Wavelength Fiber Laser Based on Cascade Single-Stage Resonant Cavity 基于级联单级谐振腔的1 μm双波长光纤激光器的实验演示

IF 2.1 4区工程技术

IEEE Photonics Journal Pub Date : 2025-04-01 DOI: 10.1109/JPHOT.2025.3556102

Xinran Li;Yun Ye;Ke Li;Xinyi Ding;Hanshuo Wu;Xiaolin Wang;Weihong Hua

{"title":"Experimental Demonstration of 1 μm Dual-Wavelength Fiber Laser Based on Cascade Single-Stage Resonant Cavity","authors":"Xinran Li;Yun Ye;Ke Li;Xinyi Ding;Hanshuo Wu;Xiaolin Wang;Weihong Hua","doi":"10.1109/JPHOT.2025.3556102","DOIUrl":"https://doi.org/10.1109/JPHOT.2025.3556102","url":null,"abstract":"Dual-wavelength fiber lasers (DWFL) have tremendous application prospects in industrial processing, electronic countermeasures, biomedicine and so on due to their advantages of flexible dual-wavelength output. In this work, we have constructed a 1 μm dual-wavelength fiber laser based on a cascaded resonant cavity with fiber Bragg gratings (FBGs), and the dual-wavelength laser output at the central wavelengths of 1060 nm and 1080 nm was simultaneously achieved. The laser performance involving output power and spectral evolution of this dual-wavelength fiber laser were carefully compared and investigated under two different cascading configurations, including 1060-1080 and 1080-1060. The experimental results reveal that the 1060-1080 configuration was more favorable for the dual-wavelength fiber lasers to generate high-power and high-spectral-purity dual-wavelength laser compared to the 1080-1060 configuration. Furthermore, based on the 1060-1080 configuration, a continuous-wave dual-wavelength laser output at 1060 nm with 40.43 W and 1080 nm with 302.65 W was simultaneously achieved, with the nonlinear effect suppression over 40 dB at the maximum power. To the best of our knowledge, this is the first demonstration of 1 μm cascaded resonant cavity dual-wavelength fiber laser. This work offers a significant guidance for designing and implementing the high-power compactness dual-wavelength fiber laser within 1 μm spectral region.","PeriodicalId":13204,"journal":{"name":"IEEE Photonics Journal","volume":"17 3","pages":"1-7"},"PeriodicalIF":2.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10945714","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143848826","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

Efficient Polarization-Diversity Grating Coupler With Multipolar Radiation Mode Enhancement 具有多极辐射模式增强的高效偏振分集光栅耦合器

IF 2.1 4区工程技术

IEEE Photonics Journal Pub Date : 2025-03-31 DOI: 10.1109/JPHOT.2025.3556127

Wu Zhou;Kaihang Lu;Shijie Kang;Xiaoxiao Wu;Yeyu Tong

{"title":"Efficient Polarization-Diversity Grating Coupler With Multipolar Radiation Mode Enhancement","authors":"Wu Zhou;Kaihang Lu;Shijie Kang;Xiaoxiao Wu;Yeyu Tong","doi":"10.1109/JPHOT.2025.3556127","DOIUrl":"https://doi.org/10.1109/JPHOT.2025.3556127","url":null,"abstract":"Two-dimensional (2D) diffraction gratings offer a polarization-independent coupling solution between the planar photonic chips and optical fibers, with advantages including placement flexibility, ease of fabrication, and tolerance to alignment errors. In this work, we first proposed and experimentally demonstrated a highly efficient 2D grating coupler enabled by exciting multipolar resonances through bi-level dielectric structures. A 70-nm shallow-etched hole array and a 160-nm-thick deposited polycrystalline silicon tooth array are employed in our proposed 2D grating coupler. Strong optical field confinement and enhanced radiation directionality can thus be attained through the use of 193-nm deep-ultraviolet (DUV) lithography, which is readily accessible from commercial silicon photonics foundries. The measured experimental peak coupling efficiency is −2.54 dB with a minimum feature size of 180 nm. Due to the benefits of perfectly vertical coupling, the measured polarization-dependent loss in our experiments is below 0.3 dB within the 3-dB working bandwidth. Our proposed multipolar radiation mode enhanced 2D grating structure can also be applied to other integrated optics platforms, enabling an efficient and polarization-diversity coupling between optical fibers and photonic chips while reducing requirements on feature size.","PeriodicalId":13204,"journal":{"name":"IEEE Photonics Journal","volume":"17 2","pages":"1-6"},"PeriodicalIF":2.1,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10945688","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143824660","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