Journal of Lightwave Technology最新文献_第10页

Safety Power and 5G NR Analog Radio Over Multicore Fiber Transmission With Tilted Fiber Bragg Gratings 倾斜光纤布拉格光栅多核光纤传输的安全功率和5G NR模拟无线电

IF 4.8 1区工程技术

Journal of Lightwave Technology Pub Date : 2025-07-16 DOI: 10.1109/JLT.2025.3589657

J. Barco-Alvárez;R. Altuna;D. S. Montero;D. Barrera;S. Sales;C. Vázquez

引用次数: 0

General Method for Rayleigh Signature Interrogation in Distributed Acoustic Sensors Based on Optical Time-Domain Reflectometry 基于光时域反射法的分布式声传感器瑞利特征探测的一般方法

IF 4.8 1区工程技术

Journal of Lightwave Technology Pub Date : 2025-07-15 DOI: 10.1109/JLT.2025.3589346

Vahid Sharif;Mikel Sagues;Alayn Loayssa

{"title":"General Method for Rayleigh Signature Interrogation in Distributed Acoustic Sensors Based on Optical Time-Domain Reflectometry","authors":"Vahid Sharif;Mikel Sagues;Alayn Loayssa","doi":"10.1109/JLT.2025.3589346","DOIUrl":"https://doi.org/10.1109/JLT.2025.3589346","url":null,"abstract":"We introduce a method to measure the Rayleigh signature of an optical fiber, which is defined as the frequency dependence of the backscattering from each position along its length. The method uses the Short-Frequency Fourier transform to extract frequency-dependent time-resolved information from the spectrum of the detected pulse response in an optical time-domain reflectometry (OTDR) setup. The Rayleigh signature obtained can be used to implement broadband high-sensitivity high-linearity distributed acoustic sensors (DAS) that are immune to signal fading problems commonly affecting other OTDR-based systems. Rayleigh signature interrogation has been widely applied in optical frequency-domain reflectometry sensors and some specialized OTDR configurations. However, to our knowledge, this is the first technique that enables its general use in conventional single-pulse coherent OTDR setups, as well as in other time-domain systems that measure the impulse response of a fiber, such as those that utilize pulse compression. We experimentally demonstrate the method in a conventional heterodyne-detection OTDR DAS and also in a enhanced-performance pulse compression setup employing phase-coded waveforms. Measurements in a 50 km fiber with spatial resolution 2 m and a sensitivity of 113 <inline-formula><tex-math>$text{p}epsilon /sqrt{text{Hz}}$</tex-math></inline-formula> demonstrate the capabilities of the technique.","PeriodicalId":16144,"journal":{"name":"Journal of Lightwave Technology","volume":"43 18","pages":"8927-8934"},"PeriodicalIF":4.8,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11080280","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144909364","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Ultra-Stable Demodulation Based on Parameter- Optimized Frequency Estimation for Sapphire Fiber Microcavity High Temperature Sensing 基于参数优化频率估计的蓝宝石光纤微腔高温传感超稳定解调

IF 4.8 1区工程技术

Journal of Lightwave Technology Pub Date : 2025-07-15 DOI: 10.1109/JLT.2025.3588853

Xin Chen;Xiaoshuang Dai;Jiande Zhang;Junfeng Jiang;Shuang Wang;Kun Liu;Xuezhi Zhang;Tiegen Liu

{"title":"Ultra-Stable Demodulation Based on Parameter- Optimized Frequency Estimation for Sapphire Fiber Microcavity High Temperature Sensing","authors":"Xin Chen;Xiaoshuang Dai;Jiande Zhang;Junfeng Jiang;Shuang Wang;Kun Liu;Xuezhi Zhang;Tiegen Liu","doi":"10.1109/JLT.2025.3588853","DOIUrl":"https://doi.org/10.1109/JLT.2025.3588853","url":null,"abstract":"Sapphire fiber microcavity (SFM) sensing, renowned for its robustness in harsh environments, has excellent potential for precision high-temperature thermometry. However, conventional demodulation techniques often suffer from large jumps and small step jumps under extreme thermal conditions. To address these challenges, this study introduces a novel demodulation algorithm based on parameter-optimized frequency estimation and phase compensation, enabling high-resolution temperature tracking from 25 °C to 1500 °C. Parameter-optimized frequency estimation is employed to eliminate large jumps, and phase compensation is employed to eliminate small step jumps. Experimental results verify that the proposed algorithm eliminates jump errors and reduces the number of data points by 32 times, respectively, which substantially enhances the stability of demodulation outcomes and decreases the demodulation time from 7.9 ms to 1.4 ms. Temperature sensitivity is 4.84 nm/°C at 1500 °C, and the mean resolution is 0.33 °C across the full temperature range, which places a solid base for accurate high-temperature measurement in practical environments.","PeriodicalId":16144,"journal":{"name":"Journal of Lightwave Technology","volume":"43 18","pages":"9006-9012"},"PeriodicalIF":4.8,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144909386","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Asynchronous Dense-Frequency-Interleaved Analog-to-Digital Conversion Breaking the Trade-Off Between Bandwidth and Dynamic Range 异步密集频率交织模数转换打破了带宽和动态范围之间的权衡

IF 4.8 1区工程技术

Journal of Lightwave Technology Pub Date : 2025-07-15 DOI: 10.1109/JLT.2025.3588164

Jiyao Yang;Jianwei Liu;Zhenwei Mo;Chenyu Liu;Jingwen Dong;Qinyu Xie;Henan Zeng;Ziqiang Yin;Wangzhe Li

{"title":"Asynchronous Dense-Frequency-Interleaved Analog-to-Digital Conversion Breaking the Trade-Off Between Bandwidth and Dynamic Range","authors":"Jiyao Yang;Jianwei Liu;Zhenwei Mo;Chenyu Liu;Jingwen Dong;Qinyu Xie;Henan Zeng;Ziqiang Yin;Wangzhe Li","doi":"10.1109/JLT.2025.3588164","DOIUrl":"https://doi.org/10.1109/JLT.2025.3588164","url":null,"abstract":"An analog-to-digital converter (ADC) with broad bandwidth and high dynamic range is of the utmost importance for modern radio frequency (RF) applications. However, as the bandwidth increases with the sampling rate, distortions caused by manufacturing defects are deteriorated, thereby decreasing the dynamic range. To break the trade-off, a novel photonics-assisted asynchronous dense-frequency-interleaved ADC with decoupled bandwidth and dynamic range is proposed. By employing an asynchronous photonic channelizer, densely frequency-interleaving is achieved to convert a broadband RF signal into multiple spectrum segments that are then quantized independently by sub-ADCs. The dynamic range is determined only by the sub-ADCs while the bandwidth is determined by the number of segments or frequency-interleaved channels. Thanks to the asynchrony of the frequency-interleaving, frequency-shift dithering is introduced and taken advantage of to suppress the quantization spurs, further enhancing the dynamic range. The performance requirements for both photonic and electronic components are also eased. Experimentally, a dynamic range of 79.0 dB is achieved at a bandwidth of 5.5 GHz, outperforming the state-of-the-art ADCs, and the flexibility of the method in terms of operating frequency range and bandwidth is also demonstrated. The proposed method provides a unique tool for broadband digitization and paves the way toward next-generation RF applications.","PeriodicalId":16144,"journal":{"name":"Journal of Lightwave Technology","volume":"43 18","pages":"8699-8710"},"PeriodicalIF":4.8,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144920578","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Single and Multi-Wavelength Reconfigurable SOA-Based Fast Tunable Fiber Laser 基于soa的单波长和多波长可重构快速可调谐光纤激光器

IF 4.8 1区工程技术

Journal of Lightwave Technology Pub Date : 2025-07-15 DOI: 10.1109/JLT.2025.3588589

Yuqian Wang;Pengcheng Liu;Xinyu Yin;Zhaoheng Wang;Xianghao Tan;Menglin Zhang;Jia Zhao;Wei Ji;Weiping Huang

引用次数: 0

Estimation of Submarine Cable Location Using Optical-Fiber Distributed Acoustic Sensing Combined With Ship-Borne Sound Sources 结合舰载声源的光纤分布式声传感海缆定位估计

IF 4.8 1区工程技术

Journal of Lightwave Technology Pub Date : 2025-07-15 DOI: 10.1109/JLT.2025.3588069

Jianmin Lin;Qile Wang;Wentao Zhang;Jiangzheng Shu;Lei Zhang;Qunshu Tang

{"title":"Estimation of Submarine Cable Location Using Optical-Fiber Distributed Acoustic Sensing Combined With Ship-Borne Sound Sources","authors":"Jianmin Lin;Qile Wang;Wentao Zhang;Jiangzheng Shu;Lei Zhang;Qunshu Tang","doi":"10.1109/JLT.2025.3588069","DOIUrl":"https://doi.org/10.1109/JLT.2025.3588069","url":null,"abstract":"Ascertaining the precise locations of submarine cables is crucial to their maintenance and to monitoring marine environments using equipment reliant on such cables. Traditional detection methods such as underwater robots equipped with optical, acoustic, and electromagnetic sensors have several limitations, including a short detection range, limited applicability, and low operational efficiency. Distributed acoustic sensing (DAS) is an emerging technology that uses optical-fiber (OF) cables as dense acoustic sensor arrays to detect submarine cable routes. Here, we describe a method to locate submarine cables that combines DAS with ship-borne sound sources. The spatial location of the cable is determined by connecting the coordinates of each DAS channel, which are jointly estimated by the Chan and snow ablation optimizer algorithms. Furthermore, a blind signal evaluation and selection method is used to improve the correlation between DAS demodulated signals in complex marine environments, thereby substantially reducing the estimation errors of the DAS channels. Localization results for a ∼5 km length of submarine cable closely matched the actual route, with an average error of ∼9.53 m. The results of this study demonstrate the potential of DAS-instrumented OF for detecting long-distance submarine cable routes.","PeriodicalId":16144,"journal":{"name":"Journal of Lightwave Technology","volume":"43 18","pages":"8917-8926"},"PeriodicalIF":4.8,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144909190","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Universal On-Chip Polarization Handling With Deep Photonic Networks 用深度光子网络处理通用片上偏振

IF 4.8 1区工程技术

Journal of Lightwave Technology Pub Date : 2025-07-15 DOI: 10.1109/JLT.2025.3589148

Aycan Deniz Vit;Ujal Rzayev;Bahrem Serhat Danis;Ali Najjar Amiri;Kazim Gorgulu;Emir Salih Magden

{"title":"Universal On-Chip Polarization Handling With Deep Photonic Networks","authors":"Aycan Deniz Vit;Ujal Rzayev;Bahrem Serhat Danis;Ali Najjar Amiri;Kazim Gorgulu;Emir Salih Magden","doi":"10.1109/JLT.2025.3589148","DOIUrl":"https://doi.org/10.1109/JLT.2025.3589148","url":null,"abstract":"We propose a systematic approach to design complex and universally capable deep photonic networks with inherent robustness to fabrication-induced variations. We first create a framework that incorporates layers of variation-aware, custom-designed Mach-Zehnder interferometers, and virtual wafer maps to optimize broadband power splitters under fabrication variations. Specifically, we demonstrate designs for broadband 50/50 splitters with transmission deviations within <inline-formula><tex-math>$pm$</tex-math></inline-formula>2% of the target and 5% power taps with deviations within <inline-formula><tex-math>$pm$</tex-math></inline-formula>1.5%, even under fabrication imperfections of <inline-formula><tex-math>$pm$</tex-math></inline-formula>15 nm in waveguide width and <inline-formula><tex-math>$pm$</tex-math></inline-formula>10 nm in thickness. The significantly improved device performance under fabrication-induced changes demonstrates the effectiveness of the deep photonic network architecture in designing fabrication-tolerant photonic devices, and showcases the potential for improving circuit performance by optimizing for expected variations in waveguide dimensions.","PeriodicalId":16144,"journal":{"name":"Journal of Lightwave Technology","volume":"43 18","pages":"8770-8776"},"PeriodicalIF":4.8,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144914133","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An Optical True Time Delay Transmitting Array for Terahertz Broadband Communications 一种用于太赫兹宽带通信的光真延时传输阵列

IF 4.8 1区工程技术

Journal of Lightwave Technology Pub Date : 2025-07-15 DOI: 10.1109/JLT.2025.3589092

Tingxuan Hu;Hao Jiang;Zhencan Yang;Yuqian Tang;Luming Zhang;Fan Yang;Yang Liu;Feiliang Chen;Mo Li;Jian Zhang

{"title":"An Optical True Time Delay Transmitting Array for Terahertz Broadband Communications","authors":"Tingxuan Hu;Hao Jiang;Zhencan Yang;Yuqian Tang;Luming Zhang;Fan Yang;Yang Liu;Feiliang Chen;Mo Li;Jian Zhang","doi":"10.1109/JLT.2025.3589092","DOIUrl":"https://doi.org/10.1109/JLT.2025.3589092","url":null,"abstract":"This paper addresses the issues of efficient transmission, radiation and high-precision delay calibration of terahertz (THz) optical true time delay (OTTD) antenna arrays. To this end, we propose an effective medium-clad antenna aperture and a delay calibration method based on the amplitude-frequency response. The resulting broadband THz OTTD transmitting array is presented as a solution to the aforementioned problems. The transmitting array comprises a 4-element dielectric rod antenna based on an effective medium clad transmission line, exhibiting high transmission and radiation efficiency. Furthermore, a calibration method based on the amplitude-frequency characteristics of the radiated electric field is proposed, which enables full-link calibration from the input optical signals to the output THz signals. This calibration method is characterized by high resolution and low complexity. We processed the antenna aperture and the OTTD transmitting array. The measured results show that this transmitting array is capable of realizing a beam scanning range of ±35° in the frequency range from 110–145 GHz. Meanwhile, we modulated 8 Gbps on-off keying (OOK) signals on the transmitting array, and the measurement results show that the proposed transmitting array is capable of realizing high-quality communication signal transmission with 0° and 20° beam deflection. The transmitting array proposed in this paper exhibits instantaneous wideband and wide-angle scanning performance, making it highly valuable for applications in the THz communication field.","PeriodicalId":16144,"journal":{"name":"Journal of Lightwave Technology","volume":"43 18","pages":"8691-8698"},"PeriodicalIF":4.8,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144920441","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

SAMA-IR: Sensitivity-Analysis Guided Memory-Aware Input Refinement Methodology for Large-Scale Optical Networks With Field-Trial Validation SAMA-IR：具有现场试验验证的大规模光网络的灵敏度分析引导记忆感知输入细化方法

IF 4.8 1区工程技术

Journal of Lightwave Technology Pub Date : 2025-07-15 DOI: 10.1109/JLT.2025.3589374

Yihao Zhang;Qizhi Qiu;Xiaomin Liu;Lilin Yi;Weisheng Hu;Qunbi Zhuge

{"title":"SAMA-IR: Sensitivity-Analysis Guided Memory-Aware Input Refinement Methodology for Large-Scale Optical Networks With Field-Trial Validation","authors":"Yihao Zhang;Qizhi Qiu;Xiaomin Liu;Lilin Yi;Weisheng Hu;Qunbi Zhuge","doi":"10.1109/JLT.2025.3589374","DOIUrl":"https://doi.org/10.1109/JLT.2025.3589374","url":null,"abstract":"The unprecedented demands on optical network capacity and stability necessitate the development of autonomous driving optical networks (ADONs), where accurate physical-layer modeling plays a fundamental role. Digital twins (DTs), while promising for precise quality of transmission (QoT) estimation, face significant challenges in maintaining modeling accuracy due to uncertain input parameters. Although input refinement (IR) approaches have been investigated to address this issue, they often struggle with massive uncertain inputs from various network components, especially in large-scale networks. The high dimensionality of input parameter spaces and complex physical interactions among different inputs make IR intractable. To tackle this challenge, this paper presents SAMA-IR, a comprehensive methodology for refining uncertain inputs of physical-layer models in large-scale optical networks. SAMA-IR introduces two key innovations: a sensitivity analysis (SA) framework that prioritizes parameter refinement based on their impact on system performance, and a memory aware (MA) weighting mechanism that maintains physical consistency throughout the refinement process. SAMA-IR is validated through field trials on a 440-km link with commercial equipment, where it demonstrated superior performance in both QoT metric and physical consistency metric. Using only 20 training samples, SAMA-IR reduces the Q-factor estimation error from −2.52±0.96 dB to −0.03±0.55 dB. Compared to conventional IR approaches, SAMA-IR can improve the optical power estimation accuracy by up to 2.32 dB at the 90th percentile. The results suggest that SAMA-IR offers a practical solution for maintaining accurate modeling with strong reliability and interpretability, particularly in scenarios involving complex parameter interactions.","PeriodicalId":16144,"journal":{"name":"Journal of Lightwave Technology","volume":"43 18","pages":"8603-8611"},"PeriodicalIF":4.8,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144920444","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Extended-Range Frequency Domain Interferometric Ranging Based on Optical-Microwave Mapping Acquisition 基于光微波映射采集的增程频域干涉测距

IF 4.8 1区工程技术

Journal of Lightwave Technology Pub Date : 2025-07-15 DOI: 10.1109/JLT.2025.3589321

Shuanyu Liu;Yongchao Chen;Longhuang Tang;Heli Ma;Tianjiong Tao;Long Chen;Shenggang Liu;Xing Jia;Jian Wu;Chengjun Li;Xiang Wang;Yifei Sun;Weilu Chen;Jia Shi;Jidong Weng

引用次数: 0