IEEE Photonics Journal最新文献_第4页

Wavefront Reconstruction for a Holographic Modal Wavefront Sensor Based on Extreme Learning Machine 基于极限学习机的全息模态波前传感器波前重构

IF 2.1 4区工程技术

IEEE Photonics Journal Pub Date : 2025-02-17 DOI: 10.1109/JPHOT.2025.3542831

Han Cao;Kainan Yao;Jianli Wang;Minglu Li;Leqiang Yang;Zhiqiang Xu

{"title":"Wavefront Reconstruction for a Holographic Modal Wavefront Sensor Based on Extreme Learning Machine","authors":"Han Cao;Kainan Yao;Jianli Wang;Minglu Li;Leqiang Yang;Zhiqiang Xu","doi":"10.1109/JPHOT.2025.3542831","DOIUrl":"https://doi.org/10.1109/JPHOT.2025.3542831","url":null,"abstract":"The intermodal crosstalk effect as well as the limited dynamic range of holographic modal wavefront sensors (HMWFSs) significantly affect their wavefront-sensing accuracy. Thus, this study was aimed at proposing an extreme learning machine (ELM)-based wavefront-reconstruction algorithm for holographic HMWFSs to overcome the errors caused by crosstalk as well as extend the dynamic range of the sensors. The simulation results indicated that the proposed ELM-based algorithm reduced the crosstalk-induced residual wavefront root mean square error to 4.7% of the initial value, and this was 84.6% lower than the reduction achieved by the conventional sensitivity-matrix method. After selecting the optimal range of training samples, the ELM model further reduced the residual error by approximately 74% under aberration conditions, where the conventional method reached its convergence limit. Thus, we proposed an ELM model for mitigating the issue of the linear regression relationship between the differential signals measured by HMWFS and the incident-wavefront Zernike-mode coefficients under the aberration-mode crosstalk effect.","PeriodicalId":13204,"journal":{"name":"IEEE Photonics Journal","volume":"17 2","pages":"1-9"},"PeriodicalIF":2.1,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10891414","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143645319","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

70 MW-Level Picosecond Mid-Infrared Radiation Generation by Difference Frequency Generation in AgGaS2, BaGa4Se7, LiGaSe2, and LiGaS2

IF 2.1 4区工程技术

IEEE Photonics Journal Pub Date : 2025-02-14 DOI: 10.1109/JPHOT.2025.3542540

Michal Jelínek;Milan Frank;Václav Kubeček;Ondřej Novák;Jaroslav Huynh;Martin Cimrman;Michal Chyla;Martin Smrž;Tomáš Mocek

{"title":"70 MW-Level Picosecond Mid-Infrared Radiation Generation by Difference Frequency Generation in AgGaS2, BaGa4Se7, LiGaSe2, and LiGaS2","authors":"Michal Jelínek;Milan Frank;Václav Kubeček;Ondřej Novák;Jaroslav Huynh;Martin Cimrman;Michal Chyla;Martin Smrž;Tomáš Mocek","doi":"10.1109/JPHOT.2025.3542540","DOIUrl":"https://doi.org/10.1109/JPHOT.2025.3542540","url":null,"abstract":"Comparative study of nonlinear crystals for picosecond difference frequency generation in mid-IR is presented. Nonlinear crystals of AgGaS2, BaGa4 Se7, LiGaSe2, and LiGaS2 were studied. In order to investigate the dependence of efficiency on the crystal length, three sets of crystals with lengths of 2, 4, or 8 mm were tested. The developed tunable DFG system was driven by the 1.03 µm, 1.8 ps, Yb:YAG thin-disk laser system operated at the repetition rate of 10 or 100 Hz. As the best result, picosecond mid-IR pulses at a wavelength of <inline-formula><tex-math>$sim$</tex-math></inline-formula>7 µm with the energy up to 130 µJ corresponding to the peak power of <inline-formula><tex-math>$sim$</tex-math></inline-formula>72 MW were generated using the 8 mm long LiGaS2 crystal. Using the BaGa4 Se7 crystal, DFG tunability in the wavelength range from 6 up to 13 µm was achieved.","PeriodicalId":13204,"journal":{"name":"IEEE Photonics Journal","volume":"17 2","pages":"1-7"},"PeriodicalIF":2.1,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10890961","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143553283","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

Influence of the Passivation Method on the Performance of 635 nm Ridge Waveguide Lasers

IF 2.1 4区工程技术

IEEE Photonics Journal Pub Date : 2025-02-14 DOI: 10.1109/JPHOT.2025.3542598

Jos E. Boschker;David Feise;Uwe Spengler;Peter Ressel;Katrin Paschke;Andrea Knigge

引用次数: 0

All-Fiber Broadband Photon Pair Generation in Dispersion Flattened Highly Non-Linear Fibers

IF 2.1 4区工程技术

IEEE Photonics Journal Pub Date : 2025-02-14 DOI: 10.1109/JPHOT.2025.3542592

Anadi Agnihotri;Pradeep Kumar Krishnamurthy

{"title":"All-Fiber Broadband Photon Pair Generation in Dispersion Flattened Highly Non-Linear Fibers","authors":"Anadi Agnihotri;Pradeep Kumar Krishnamurthy","doi":"10.1109/JPHOT.2025.3542592","DOIUrl":"https://doi.org/10.1109/JPHOT.2025.3542592","url":null,"abstract":"We demonstrate an all-fiber broadband photon pair source based on four wave mixing (FWM) process in dispersion flattened highly non-linear fiber (DF-HNLF). The fiber exhibits a zero dispersion slope near 1550 nm, allowing phase-matched FWM over entire S, C, and L bands and thus efficient generation of signal and idler photons. A comparative theoretical study between conventional dispersion-shifted fiber (DSF) and DF-HNLF highlights the spectral range differences in the generation of photon pairs. We measure coincidence counts at three different sets of wavelengths. To study the effects of Raman scattering, which acts as noise source in these types of fibers, we calculate the correlation <inline-formula><tex-math>$g^{(2)}(tau)$</tex-math></inline-formula> at different pump powers. We use stimulated emission tomography to characterize the generation of photon pairs across the S, C, and L bands. We show that DF-HNLF is an ideal medium for generating correlated photons over a broad spectral range (<inline-formula><tex-math>$>!!100,text{nm}$</tex-math></inline-formula>), making it suitable for frequency-multiplexed quantum communication systems. We estimate the photon pair generation efficiency to be 0.05 <inline-formula><tex-math>$text{mW}^{-2}/text{pulse}$</tex-math></inline-formula>.","PeriodicalId":13204,"journal":{"name":"IEEE Photonics Journal","volume":"17 2","pages":"1-7"},"PeriodicalIF":2.1,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10890974","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143521431","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

Decomposing-Recomposing Network: A Novel Reconstruction and Enhancement Approach for Low-Light Image

IF 2.1 4区工程技术

IEEE Photonics Journal Pub Date : 2025-02-13 DOI: 10.1109/JPHOT.2025.3541426

Zhenyang Ding;Nan Wang

{"title":"Decomposing-Recomposing Network: A Novel Reconstruction and Enhancement Approach for Low-Light Image","authors":"Zhenyang Ding;Nan Wang","doi":"10.1109/JPHOT.2025.3541426","DOIUrl":"https://doi.org/10.1109/JPHOT.2025.3541426","url":null,"abstract":"Low-light imaging has long been a fundamental yet challenging area in optical imaging, primarily due to photon-starved conditions that not only impair image visibility but also amplify sensor noise. Traditional enhancement techniques mainly focus on illumination adjustments and often fall short in addressing the inherent trade-off between boosting brightness and suppressing noise. Moreover, many existing methods assume expert-level noise management during image capture, thereby overlooking the crucial frequency-dependent characteristics of noise distribution. Our observations reveal that while simultaneously enhancing brightness and reducing noise is challenging, noise intensity indeed varies across different frequency layers. In low-light images, the noise predominantly appears as Additive White Gaussian Noise (AWGN) concentrated in the high-frequency domain. Inspired by this phenomenon, we introduce a novel model based on the principles of decomposition and recomposition. Extensive experiments conducted on several baseline low-light datasets—including LOL-v1, LOL-v2, MEF, LIME, DICM, and NPE—demonstrate that our approach not only outperforms the latest methods quantitatively and qualitatively but also excels in handling real and complex low-light scenarios. Furthermore, our method consistently produces superior visual outcomes compared to existing techniques.","PeriodicalId":13204,"journal":{"name":"IEEE Photonics Journal","volume":"17 2","pages":"1-9"},"PeriodicalIF":2.1,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10884023","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143564224","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

Room Temperature InGaAs/AlGaAsSb Single Photon Avalanche Diode

IF 2.1 4区工程技术

IEEE Photonics Journal Pub Date : 2025-02-13 DOI: 10.1109/JPHOT.2025.3541323

J. Taylor-Mew;L. Li;T. Blain;C. H. Tan;J. S. Ng

{"title":"Room Temperature InGaAs/AlGaAsSb Single Photon Avalanche Diode","authors":"J. Taylor-Mew;L. Li;T. Blain;C. H. Tan;J. S. Ng","doi":"10.1109/JPHOT.2025.3541323","DOIUrl":"https://doi.org/10.1109/JPHOT.2025.3541323","url":null,"abstract":"Near-infrared Single Photon Avalanche Diodes (SPADs) are the dominant, practical single photon detectors for quantum applications and low-level optical sensing. Although some infrared SPADs can operate at room temperature, thermoelectric coolers are still essential, increasing complexity (operation and device packaging) and power consumption. Passively-cooled SPADs could be realized by avalanche materials exhibiting better temperature stability. A promising candidate is the InGaAs/AlGaAsSb SPAD, because the AlGaAsSb multiplier is highly stable with temperature. In this work, we report single photon detection performance of InGaAs/AlGaAsSb SPADs at room temperature and 1550 nm wavelength using multiple devices for each type of measurements. With 0.1 photons per pulse and 15 μm diameter devices, the maximum SPDE was 14% at DCR of 30 Mc.s−1, respectively. The best NEP value is around an order of magnitude higher than InGaAs/InP SPADs, but are comparable to InGaAs/InAlAs SPADs. Within the relevant overbias range and repetition rate up to 1 MHz, the DCR was unaffected by afterpulsing. Timing jitters were as low as 150 ps, matching InGaAs/InP SPADs. The results of this work are much more competitive than the previous report of InGaAs/AlGaAsSb SPAD, which required cooling to 200 K to detect single photons. Further research could help InGaAs/AlGaAsSb SPADs progressing towards passively-cooled single photon detectors for room temperature operation.","PeriodicalId":13204,"journal":{"name":"IEEE Photonics Journal","volume":"17 2","pages":"1-6"},"PeriodicalIF":2.1,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10884001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143512877","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

Hybrid Indoor Positioning System Based on LED Array

IF 2.1 4区工程技术

IEEE Photonics Journal Pub Date : 2025-02-13 DOI: 10.1109/JPHOT.2025.3532991

Lu Chen;Lifang Feng;Jianping Wang;Tianyi Zhang;Haijun Zhang;Zhuo Xue

{"title":"Hybrid Indoor Positioning System Based on LED Array","authors":"Lu Chen;Lifang Feng;Jianping Wang;Tianyi Zhang;Haijun Zhang;Zhuo Xue","doi":"10.1109/JPHOT.2025.3532991","DOIUrl":"https://doi.org/10.1109/JPHOT.2025.3532991","url":null,"abstract":"Visible light positioning (VLP) is one of the effective solutions for low-cost and high-precision indoor positioning in the emerging wireless communication ecosystem, particularly in the context of 6G networks, due to its advantages of low latency, high data transmission rates, and immunity from radio frequency induced electromagnetic interference. However, severe performance limitations, including line-of-sight dependency, signal attenuation caused by obstacles, and restricted coverage, present a major challenge for the development of VLP. This article constructs an LED array-based hybrid indoor positioning system. An innovative LED array beacon is developed to simultaneously transmit coordinate and graphical information. A hybrid receiving structure, comprising an image sensor (IS) and a photodetector (PD), is constructed along with a dedicated hybrid positioning algorithm. This algorithm leverages image processing techniques to track the target trajectory, converts light intensity to identify the identification of LED, which finally resolves the target's precise world coordinates. The system's performance was validated through three experimental trials. The results demonstrate that the proposed beacon effectively covers the entire positioning area, achieving an average positioning error of 8.32 cm and a maximum positioning distance of 6.8 m. These results suggest that the proposed system provides a robust and efficient solution for precise indoor positioning applications in next-generation wireless communication networks.","PeriodicalId":13204,"journal":{"name":"IEEE Photonics Journal","volume":"17 2","pages":"1-11"},"PeriodicalIF":2.1,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10886945","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143455329","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

Modular Arithmetic of Microwave Frequency Combs Generated by a Modulated Photonic Oscillator

IF 2.1 4区工程技术

IEEE Photonics Journal Pub Date : 2025-02-13 DOI: 10.1109/JPHOT.2025.3541933

Georgia Himona;Yannis Kominis

引用次数: 0

Fast, Accurate, and Low-Disturbance Automatic Bias Control for Coherent Optical Transmitter Using Dither Vector Mapping Monitoring

IF 2.1 4区工程技术

IEEE Photonics Journal Pub Date : 2025-02-12 DOI: 10.1109/JPHOT.2025.3540839

Hongyu Li;Xinghan Li;Mengfan Cheng;Qi Yang;Ming Tang;Deming Liu;Lei Deng

{"title":"Fast, Accurate, and Low-Disturbance Automatic Bias Control for Coherent Optical Transmitter Using Dither Vector Mapping Monitoring","authors":"Hongyu Li;Xinghan Li;Mengfan Cheng;Qi Yang;Ming Tang;Deming Liu;Lei Deng","doi":"10.1109/JPHOT.2025.3540839","DOIUrl":"https://doi.org/10.1109/JPHOT.2025.3540839","url":null,"abstract":"A fast, accurate automatic bias control (ABC) scheme with low disturbance for optical IQ modulators is proposed by using the dither-vector-mapping monitoring (DVMM) technique. The proposed scheme solely necessitates vector length calculation via addition and subtraction operations and obviates the necessity of employing a direct digital synthesis (DDS) module, in contrast to conventional ABC schemes. By this means, the proposed scheme demonstrates reduced algorithmic complexity and a faster convergence rate, requiring only 0.3∼0.5 s to track and lock from a random bias point to a linear bias point, about 30 times faster than current commercial products. Moreover, unlike the commonly used single-tone dither signal (STDS), the PRBS-based dither signal in this scheme is broadband and has lower power spectral density and peak power at the same power level. Therefore, it not only induces lower nonlinear distortion in the transmitted signal but also has strong noise resistance, contributing to good control accuracy and robustness. The performance of DVMM-based ABC and STDS-based ABC is evaluated in 40/20 Gbaud 16/64 QAM coherent optical transmission systems, showing that DVMM can effectively reduce the bit error rate (BER) and has superior transmission performance.","PeriodicalId":13204,"journal":{"name":"IEEE Photonics Journal","volume":"17 2","pages":"1-5"},"PeriodicalIF":2.1,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10882879","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143518846","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

Beam-Shape-Based Angle-of-Arrival Estimation in Free-Space Laser Communication

IF 2.1 4区工程技术

IEEE Photonics Journal Pub Date : 2025-02-06 DOI: 10.1109/JPHOT.2025.3539420

Hannes F. Dreier;Ali Derakhshandeh;Andrej Harlakin;Peter A. Hoeher

引用次数: 0