IEEE Photonics Journal最新文献_第2页

Design and Optimization of Specular Reflecting RIS-Aided VLCP System With Low SNR 低信噪比镜面反射ris辅助VLCP系统的设计与优化

IF 2.4 4区工程技术

IEEE Photonics Journal Pub Date : 2025-09-04 DOI: 10.1109/JPHOT.2025.3589469

Qi Wu;Jian Zhang;Rui-jie Duan;Yan-yu Zhang;Gang Xin;Dun Li

{"title":"Design and Optimization of Specular Reflecting RIS-Aided VLCP System With Low SNR","authors":"Qi Wu;Jian Zhang;Rui-jie Duan;Yan-yu Zhang;Gang Xin;Dun Li","doi":"10.1109/JPHOT.2025.3589469","DOIUrl":"https://doi.org/10.1109/JPHOT.2025.3589469","url":null,"abstract":"This paper investigates the optimization of the integrated visible light communication and positioning (VLCP) system performance with the aid of specular reflecting reconfigurable intelligent surface (RIS) when the received signal is subject to low signal-to-noise ration (SNR). Specifically, we focus on the low SNR asymptotic capacity as the criterion of communication indicator whereas the Cramer-Rao low bound (CRLB) as the positioning performance indicator. The VLCP system performance in low SNR is discussed since the scenario may occur if the receiver encounters substantial noise interference (low illumination conditions such as corridors) or the transmitter imposes restrictive limitations on the intensity (such as biology darkroom lab). We derive the CRLB and asymptotic capacity of the RIS-aided multi-LED VLCP system in low SNR and dig out the relationship between the communication or positioning performance and the parameters of RIS. Two optimization problems are formulated with the maximization of the capacity as the optimization object while satisfying the constraints on the CRLB and RIS parameters. To address the non-convex optimization problems, we leverage convex relaxation, the monotonicity of the function, semidefinite relaxation (SDR), and greedy algorithms. Based on these techniques, we propose the integrated two-stage greedy algorithm and greedy strategy-based convex relaxation algorithm to determine the optimal configuration of RIS. From the simulation results, we show that the application of RIS can enhance the VLCP system performance in low SNR obviously, and meanwhile, the proposed algorithms are effective methods for the proposed system performance optimization problems.","PeriodicalId":13204,"journal":{"name":"IEEE Photonics Journal","volume":"17 5","pages":"1-16"},"PeriodicalIF":2.4,"publicationDate":"2025-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11151757","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145073368","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

Athermal Polymer Arrayed Waveguide Grating Router for Optical Backplane 用于光学背板的非热聚合物阵列波导光栅路由器

IF 2.4 4区工程技术

IEEE Photonics Journal Pub Date : 2025-09-03 DOI: 10.1109/JPHOT.2025.3605942

Ruizhi Jia;Han Wu;Xiao Xu;Liuge Du;Jia Zhao

引用次数: 0

Hybrid Data Augmentation Method for Multimode Sensing in a Whispering Gallery Mode Resonator 窃窃廊谐振器中多模传感的混合数据增强方法

IF 2.4 4区工程技术

IEEE Photonics Journal Pub Date : 2025-09-02 DOI: 10.1109/JPHOT.2025.3605280

Zhihang Chen;Hongliang Ren;Yuhao Zhu;Yuan Wang;Jin Lu;Jin Li;Chang-Ling Zou;Chun-Hua Dong;Qi Xuan

{"title":"Hybrid Data Augmentation Method for Multimode Sensing in a Whispering Gallery Mode Resonator","authors":"Zhihang Chen;Hongliang Ren;Yuhao Zhu;Yuan Wang;Jin Lu;Jin Li;Chang-Ling Zou;Chun-Hua Dong;Qi Xuan","doi":"10.1109/JPHOT.2025.3605280","DOIUrl":"https://doi.org/10.1109/JPHOT.2025.3605280","url":null,"abstract":"Multimode sensing based on whispering gallery mode (WGM) microcavities has attracted significant attention due to its diverse optical modes, which offer the potential for enhanced sensing performance. While AI models excel at integrating multimodal information, their effectiveness in multimode detection is often limited by the scarcity of large-scale, high-quality training data. To address this issue, we propose a hybrid data augmentation (DA) method that leverages an autoencoder (AE) to generate high-quality synthetic spectral data. Small Gaussian noise is then added to both real experimental and synthetic spectra, creating a large number of optical spectra sets. This significantly expands the training set, thereby improving the regression model’s accuracy and reducing overfitting. When applied to a multimode temperature regression task using a microbubble resonator (MBR), the hybrid DA method results in a 85.91% improvement in the prediction accuracy of the deep neural network (DNN). This approach is simple, efficient, and well-suited for multi-parameter regression tasks.","PeriodicalId":13204,"journal":{"name":"IEEE Photonics Journal","volume":"17 5","pages":"1-11"},"PeriodicalIF":2.4,"publicationDate":"2025-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11146647","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145057476","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

Stabilization of Multimode Fiber Link by Simple Insertion of Low-Noise Plastic Optical Fiber 通过简单插入低噪声塑料光纤来稳定多模光纤链路

IF 2.4 4区工程技术

IEEE Photonics Journal Pub Date : 2025-09-02 DOI: 10.1109/JPHOT.2025.3605596

Kenta Muramoto;Yasuhiro Koike

引用次数: 0

Anti-Interference Air-to-Water Wireless Optical Communication via Circularly Polarized Light 基于圆偏振光的抗干扰空水无线光通信

IF 2.4 4区工程技术

IEEE Photonics Journal Pub Date : 2025-09-01 DOI: 10.1109/JPHOT.2025.3604796

Jiajin Li;Jiaojian Song;Kai Zeng;Dong Bao;Yufeng Ma;Wenbo Sun

引用次数: 0

Cost-Effective Raman Spectra Acquisition Based on Spreading Code Modulation for Exciting Light 基于扩频编码调制的高性价比喇曼光谱采集

IF 2.4 4区工程技术

IEEE Photonics Journal Pub Date : 2025-09-01 DOI: 10.1109/JPHOT.2025.3604909

Yu Wan;Jiahe Zhang;Cheng Chen;Xiaoyi Lv;Xi Yang;Yan Huang;Xiangwei Zhao

{"title":"Cost-Effective Raman Spectra Acquisition Based on Spreading Code Modulation for Exciting Light","authors":"Yu Wan;Jiahe Zhang;Cheng Chen;Xiaoyi Lv;Xi Yang;Yan Huang;Xiangwei Zhao","doi":"10.1109/JPHOT.2025.3604909","DOIUrl":"https://doi.org/10.1109/JPHOT.2025.3604909","url":null,"abstract":"Raman spectroscopy is a powerful, non-destructive analytical tool that is widely used across various fields for identifying molecular structures and reactions. However, Raman spectroscopy may be hindered by background and fluorescence noises. These noises are often stronger than Raman signals, causing complicated spectral interpretation. Therefore, a high signal-to-noise ratio (SNR) Raman spectrum is crucial for better identification accuracy. Currently, techniques can be used to amplify the Raman signal significantly, but often require significant time or complex hardware. Spread spectrum is a mature technology used in communication to suppress noise. This study introduces a method combining Raman signals with spreading codes to obtain cost-effective high SNR Raman spectra. Firstly, simulations were conducted to verify the spreading Raman spectrum with efficient computation. While the fluorescence and background noises were suppressed due to the cross-correlation properties of spreading codes. Next, a hardware environment comprised of a laser, polarization controller, and amplitude modulator was configured to demonstrate the feasibility of the spread spectrum Raman system. The measured Raman peaks from the samples are compared with the original Raman spectrum. The results demonstrate that the spread spectrum Raman system improves the SNR for both interleukin-6 and ink samples. The timing synchronization and code length estimation algorithms significantly simplify hardware design for engineering. Both simulation and experimental results validate that the SNR of the Raman system can be improved by using a spread spectrum technique. It allows Raman analysis for appropriate SNR with cost-effective hardware in the industry.","PeriodicalId":13204,"journal":{"name":"IEEE Photonics Journal","volume":"17 5","pages":"1-7"},"PeriodicalIF":2.4,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11146512","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145078650","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

Investigation of Photoluminescence Properties and Random Lasing Behaviors in Dy3+-Doped Sr2MgMoO6 Phosphors Dy3+掺杂Sr2MgMoO6荧光粉的光致发光特性和随机激光行为研究

IF 2.4 4区工程技术

IEEE Photonics Journal Pub Date : 2025-09-01 DOI: 10.1109/JPHOT.2025.3604818

Yexi Sun;Qianyu Huang;Xin Guo;Maohui Yuan;Kai Han

{"title":"Investigation of Photoluminescence Properties and Random Lasing Behaviors in Dy3+-Doped Sr2MgMoO6 Phosphors","authors":"Yexi Sun;Qianyu Huang;Xin Guo;Maohui Yuan;Kai Han","doi":"10.1109/JPHOT.2025.3604818","DOIUrl":"https://doi.org/10.1109/JPHOT.2025.3604818","url":null,"abstract":"Lanthanide-doped phosphors are of importance in the practical applications. In this work, we investigated the photoluminescence properties and random lasing behaviors of Dy3+-doped Sr2MgMoO6 phosphors synthesized by the high-temperature solid-state method. The SEM, XRD, and EDS with elemental mapping results reveal the successful fabricating of the high-quality Sr2MgMoO6 phosphors and confirm the uniform distribution of constituent elements. Structural characterization through precise Rietveld refinement confirmed that the material crystallizes in a tetragonal system with space group I4/m (No. 87), and its refined lattice parameters are also determined. The effect of different Dy3+ doping concentrations on the luminescent properties was analyzed. The optimal doping concentration for achieving efficient luminescence is fixed at 0.08 mol%. Typical emission peaks centered at 484 nm, 576 nm, 656 nm, and 756 nm of Dy3+ were observed under the blue light excitation. Additionally, random lasing phenomena were observed in the Sr2MgMoO6 phosphors when excited with a 355 nm pulsed laser under varying pump power densities. The random lasing behaviours were confirmed by the emergence of narrow emission peaks with a narrow full width at half maximum (FWHM) and the dependence of the intensity on the excitation intensity. This work highlights the potential of Dy3+-doped Sr2MgMoO6 phosphors as efficient luminescent materials and demonstrates their application in random lasing, which opens new possibilities for their use in optoelectronic and laser technologies.","PeriodicalId":13204,"journal":{"name":"IEEE Photonics Journal","volume":"17 5","pages":"1-6"},"PeriodicalIF":2.4,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11146285","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145078667","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

100.4 W All-Fiber Visible Supercontinuum Source Based on Graded-Index Multimode Fiber 基于梯度折射率多模光纤的100.4 W全光纤可见超连续光源

IF 2.4 4区工程技术

IEEE Photonics Journal Pub Date : 2025-08-29 DOI: 10.1109/JPHOT.2025.3604436

Zhijian Huang;Tingwu Ge;Guanrui Zhao;Chuang Xue;Ruoyu Jia;Yanli Li;Haohao Kong;Chengxin Li;Yixuan Liu;Miaomiao Yang;Qingxuan Li;Wenbin Qin

引用次数: 0

Beam Shaping of VCSEL Arrays Using Randomized Microlens Arrays With Integrated Collimation 基于集成准直随机微透镜阵列的VCSEL阵列光束整形

IF 2.4 4区工程技术

IEEE Photonics Journal Pub Date : 2025-08-28 DOI: 10.1109/JPHOT.2025.3603888

Elias Ellingen;Robert Lange

{"title":"Beam Shaping of VCSEL Arrays Using Randomized Microlens Arrays With Integrated Collimation","authors":"Elias Ellingen;Robert Lange","doi":"10.1109/JPHOT.2025.3603888","DOIUrl":"https://doi.org/10.1109/JPHOT.2025.3603888","url":null,"abstract":"In active 3D imaging systems, the circular, Gaussian-shaped output of VCSEL arrays must be converted into rectangular patterns aligned with the camera’s field of view. To maximize energy efficiency, the beam edges must be sharply confined to avoid illumination outside the target area. For this purpose, this work presents the design, fabrication, and experimental evaluation of randomized microlens arrays (RMLAs) and the novel collimating RMLAs (cRMLAs), which are tailored specifically to the emission characteristics of VCSEL arrays. The freeform optical elements were fabricated using grayscale two-photon polymerization and verified using confocal microscopy. Far-field beam profiles were recorded with a cost-efficient, camera-based setup and analyzed with respect to efficiency, field-of-view coverage, and intensity distribution. The results show that the cRMLAs offer a significant increase in beam shaping efficiency and spatial resolution. This represents the first monolithic randomized microlens array with integrated collimation. The approach enables compact and energy-efficient beam shaping in future active sensing systems.","PeriodicalId":13204,"journal":{"name":"IEEE Photonics Journal","volume":"17 5","pages":"1-9"},"PeriodicalIF":2.4,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11143191","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145011288","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

Transmission of 100-Gb/s PAM-6 Signal by Using DML Wavelength-Locked to Delay Interferometer DML锁波延时干涉仪传输100gb /s PAM-6信号

IF 2.4 4区工程技术

IEEE Photonics Journal Pub Date : 2025-08-26 DOI: 10.1109/JPHOT.2025.3602815

Horyun Lee;Hoon Kim

引用次数: 0