Journal of Lightwave Technology最新文献_第3页

Bias-Insensitivity Fast Adaptive Digital Linearization Strategy for MZM-Based Microwave Photonic Links 基于mzm的微波光子链路偏置无灵敏度快速自适应数字线性化策略

IF 5.2 1区工程技术

Journal of Lightwave Technology Pub Date : 2026-09-01 Epub Date: 2026-07-07 DOI: 10.1109/JLT.2026.3710927

Tao He;Ningyuan Zhong;Jia Ye;Yemeng Wang;Wei Pan;Xihua Zou;Lianshan Yan

{"title":"Bias-Insensitivity Fast Adaptive Digital Linearization Strategy for MZM-Based Microwave Photonic Links","authors":"Tao He;Ningyuan Zhong;Jia Ye;Yemeng Wang;Wei Pan;Xihua Zou;Lianshan Yan","doi":"10.1109/JLT.2026.3710927","DOIUrl":"https://doi.org/10.1109/JLT.2026.3710927","url":null,"abstract":"To tackle the widely-prevalent nonlinearity issues in Mach-Zehnder modulator (MZM)-based microwave photonic (MWP) links, it is imperative to develop an adaptive linearization strategy to simultaneously suppress second-order and third-order nonlinear distortions (ND2s & ND3s). In this paper, we proposed and experimentally demonstrated a bias-insensitive digital linearization strategy (DLS). The key lies in revealing both the partial spectral separation between the fundamental signal and ND2s & ND3s, as well as the opposite-phase deviation between ND3s and the fundamental signal in MZM-based MWP links. Two closed-form solution cost functions enable the fast self-adaptive acquisition of optimal linearization coefficients. Besides, the bias-insensitivity enhances the practical utility. The proposed method eliminates requirements for link parameters, training sequences, and iterative optimization, only relying on the cutoff frequencies of the fundamental signal. Experimental results have demonstrated robust suppression of both ND2s & ND3s across wide range of bias conditions, confirming enhanced link adaptability and real-world feasibility.","PeriodicalId":16144,"journal":{"name":"Journal of Lightwave Technology","volume":"44 17","pages":"7324-7333"},"PeriodicalIF":5.2,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148877905","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

Joint Signal and Pump Powers Optimization in Multi-Band Hybrid Raman/DFA Systems: From ILP Optimality to ILP-Guided Heuristic via an Efficient Flat Received-Power Model 多波段混合拉曼/DFA系统的联合信号和泵功率优化：从ILP最优到ILP引导启发式的高效平坦接收功率模型

IF 5.2 1区工程技术

Journal of Lightwave Technology Pub Date : 2026-09-01 Epub Date: 2026-07-02 DOI: 10.1109/JLT.2026.3709820

Mahdieh Mehrabi;Farhad Arpanaei;Hamzeh Beyranvand;Mahdi Ranjbar Zefreh;Mohammad Javad Emadi

{"title":"Joint Signal and Pump Powers Optimization in Multi-Band Hybrid Raman/DFA Systems: From ILP Optimality to ILP-Guided Heuristic via an Efficient Flat Received-Power Model","authors":"Mahdieh Mehrabi;Farhad Arpanaei;Hamzeh Beyranvand;Mahdi Ranjbar Zefreh;Mohammad Javad Emadi","doi":"10.1109/JLT.2026.3709820","DOIUrl":"https://doi.org/10.1109/JLT.2026.3709820","url":null,"abstract":"This paper addresses joint signal and pump powers optimization in hybrid Raman/DFA (HRD) amplified multi-band optical transmission systems. The strong coupling between Raman gain and nonlinear interference makes accurate optimization computationally challenging, while simplified signal power models often limit model accuracy and the achievable system capacity. We first formulated an optimal integer linear programming (ILP) model that, for the first time, provides the globally optimal joint allocation of discrete signal and Raman pump powers. To overcome the scalability limitations of ILP, we propose a fast ILP-guided heuristic that achieves near-optimal solutions—within 2% of the optimum—while reducing the total runtime for Raman ordinary differential equations (ODEs) evaluation and solution optimization from several hours to less than 40 minutes. To enable tractable optimization over S+C+L-band, we introduce the per-Band Flat Received-Power (BFRP) model, a reduced-complexity representation of signal power evolution that significantly accelerates Raman differential equation evaluation and quality-of-transmission estimation. Simulation results over an 80-km HRD-amplified link demonstrate that BFRP model provides the best trade-off among total capacity, generalized signal-to-noise ratio (GSNR) flatness, and computational efficiency. The results further show that the maximum capacity of the considered single-span link is achieved with a 100-GHz channel spacing and decreases as stricter GSNR-flatness constraints are imposed. Overall, the proposed framework offers a practical and accurate methodology for power optimization in next-generation wideband HRD-amplified optical networks.","PeriodicalId":16144,"journal":{"name":"Journal of Lightwave Technology","volume":"44 17","pages":"7399-7411"},"PeriodicalIF":5.2,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148877930","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

Optically Powered Photodiode-Driven Antenna System Using Hollow-Core Fibers 使用空心光纤的光动力光电二极管驱动天线系统

IF 5.2 1区工程技术

Journal of Lightwave Technology Pub Date : 2026-09-01 Epub Date: 2026-07-06 DOI: 10.1109/JLT.2026.3710216

Yuki Gomi;Ryotaro Osada;Satoshi Fujita;Takeshi Takagi;Kazunori Mukasa;Satoru Okamoto;Hiroyuki Tsuda;Naoaki Yamanaka;Motoharu Matsuura

{"title":"Optically Powered Photodiode-Driven Antenna System Using Hollow-Core Fibers","authors":"Yuki Gomi;Ryotaro Osada;Satoshi Fujita;Takeshi Takagi;Kazunori Mukasa;Satoru Okamoto;Hiroyuki Tsuda;Naoaki Yamanaka;Motoharu Matsuura","doi":"10.1109/JLT.2026.3710216","DOIUrl":"https://doi.org/10.1109/JLT.2026.3710216","url":null,"abstract":"We present a high-power photodiode (HPPD)-driven antenna system using hollow-core fibers (HCFs). This system employs a configuration that does not use an electrical power amplifier (PA), with the aim of overcoming the degradation of PA performance associated with the increasingly high frequencies of radio-frequency (RF) signals. To enhance the RF output power of the HPPD, we introduce an optimized modulation scheme for analog radio-over-fiber (A-RoF) signals based on a comparison of various modulation schemes. After demonstrating the effectiveness of the high-power A-RoF transmission using HCFs, we conducted detailed performance evaluations of a conventional downlink antenna system and an HPPD-driven antenna system using HCFs. The HPPD-driven antenna system achieved a 24.6 dB improvement in the 5G new radio (NR) output power with a carrier frequency of 28 GHz compared with the conventional system, with an error-vector magnitude of less than 8%. Furthermore, we simultaneously transmitted the power for driving an HPPD-driven antenna over a 1 km HCF, and experimentally demonstrated the ability to drive the HPPD-driven antenna via power-over-fiber without requiring an external power supply. To the best of our knowledge, this is the first demonstration of an optically powered HPPD-driven antenna with a 5G NR output power of approximately 10 dBm based on the practical 28 GHz band wireless standard.","PeriodicalId":16144,"journal":{"name":"Journal of Lightwave Technology","volume":"44 17","pages":"7478-7488"},"PeriodicalIF":5.2,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148877947","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

A Block Least Mean Square Method for Fiber Longitudinal Power Profile Monitoring 光纤纵向功率分布监测的块最小均二乘法

IF 5.2 1区工程技术

Journal of Lightwave Technology Pub Date : 2026-09-01 Epub Date: 2026-06-22 DOI: 10.1109/JLT.2026.3705752

Paolo Serena;Chiara Lasagni;Alberto Bononi;Fabien Boitier;Joana Girard-Jollet

引用次数: 0

Ultra-High Bandwidth Efficient Implementation Employing Geometric Shaped Symbol Division Multiplexing in Optical DMT Interconnection 几何符号分复用在光DMT互连中的超高带宽高效实现

IF 5.2 1区工程技术

Journal of Lightwave Technology Pub Date : 2026-09-01 Epub Date: 2026-07-10 DOI: 10.1109/JLT.2026.3712364

Xiaolong Pan;Jun Ming;Yujia Mu;Hailian He;Zhipei Li;Xiangjun Xin;Ran Gao;Ze Dong

{"title":"Ultra-High Bandwidth Efficient Implementation Employing Geometric Shaped Symbol Division Multiplexing in Optical DMT Interconnection","authors":"Xiaolong Pan;Jun Ming;Yujia Mu;Hailian He;Zhipei Li;Xiangjun Xin;Ran Gao;Ze Dong","doi":"10.1109/JLT.2026.3712364","DOIUrl":"https://doi.org/10.1109/JLT.2026.3712364","url":null,"abstract":"A channel coded modulation scheme based on hybrid geometric shaped symbol division multiplexing (GS-SDM) is proposed and experimentally demonstrated in intensity modulation and direct detection discrete optical discrete multi-tone (DMT) interconnection system with ultra-high bandwidth efficiency (BE) enhancement. By GS multiplexing of up to eight symbols of 64 quadrature amplitude modulation (QAM) on every single complex constellation point, a newly formed SDM-12QAM with 6-bit symbol capacity achieves extra enhancement for symbol carrying data rate by 67% as well as the BE implementation, compared with typical modulation format at identical symbol rate. For SDM de-multiplexing (De-SDM), an iteratively de-modulation cooperated with low-density parity-check decoding is proposed to retrieve the multiplexed overlapping symbols in GS-SDM symbols. The experimental results reveal that, when the 100Gb/s DMT signals are transmitted over standard single mode fiber, the proposed GS-SDM signal can effectively improve the received power sensitivity by 3.3 dB, under conditions of significantly avoidance of the impairments by fiber chromatic dispersion and Kerr nonlinearity optimization.","PeriodicalId":16144,"journal":{"name":"Journal of Lightwave Technology","volume":"44 17","pages":"7421-7427"},"PeriodicalIF":5.2,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148877918","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

Journal of Lightwave Technology Information for Authors 光波技术信息作者杂志

IF 5.2 1区工程技术

Journal of Lightwave Technology Pub Date : 2026-09-01 Epub Date: 2026-10-09 DOI: 10.1109/JLT.2026.3741260

引用次数: 0

Quantitative Analysis of ISAR Image Degradation Due to Modulator Asymmetry in Sagnac-Loop-Based Photonic Radar Receivers 基于sagnac环的光子雷达接收机调制器不对称导致ISAR图像退化的定量分析

IF 5.2 1区工程技术

Journal of Lightwave Technology Pub Date : 2026-09-01 Epub Date: 2026-06-24 DOI: 10.1109/JLT.2026.3707054

Youngseok Bae;Seonu Baek;Seungeui Lee

引用次数: 0

Partial- and Joint-MIMO Processing Schemes for Space Division Multiplexed Transmission Over Different Multi-Mode Fibers 不同多模光纤上空分复用传输的部分和联合mimo处理方案

IF 5.2 1区工程技术

Journal of Lightwave Technology Pub Date : 2026-09-01 Epub Date: 2026-07-10 DOI: 10.1109/JLT.2026.3712496

Stefano Gaiani;Ruben S. Luís;Besma Kalla;Daniele Orsuti;Menno van den Hout;Haoshuo Chen;Nicolas K. Fontaine;Roland Ryf;Pierre Sillard;Georg Rademacher;Thomas Bradley;Chigo Okonkwo;Alessandro Gagliano;Marco Fasano;Paolo Martelli;Alberto Gatto;Paola Parolari;Pierpaolo Boffi;Hideaki Furukawa

{"title":"Partial- and Joint-MIMO Processing Schemes for Space Division Multiplexed Transmission Over Different Multi-Mode Fibers","authors":"Stefano Gaiani;Ruben S. Luís;Besma Kalla;Daniele Orsuti;Menno van den Hout;Haoshuo Chen;Nicolas K. Fontaine;Roland Ryf;Pierre Sillard;Georg Rademacher;Thomas Bradley;Chigo Okonkwo;Alessandro Gagliano;Marco Fasano;Paolo Martelli;Alberto Gatto;Paola Parolari;Pierpaolo Boffi;Hideaki Furukawa","doi":"10.1109/JLT.2026.3712496","DOIUrl":"https://doi.org/10.1109/JLT.2026.3712496","url":null,"abstract":"We experimentally study simplified multiple-input multiple-output (MIMO) processing schemes to support high-capacity space division multiplexed transmission over multiple multi-mode fibers (MMFs) with different mode counts. We exploit the mode selectivity of multi-mode fibers (MMFs) and components to implement a mode group (MG)-based transmission, and MIMO processing. We evaluate various transmission scenarios involving both a 15-mode MMF, and a 6-mode MMF, using different combinations of adjacent and non-adjacent MGs. For signal detection and recovery, we employ simplified MIMO processing approaches to reduce the complexity of the digital signal processing (DSP). We show enhanced flexibility compared to our recent work, demonstrating data recovery even in transmission scenarios with propagation of adjacent MGs, and high uncompensated inter-MG crosstalk. We achieve throughput from 70 Tb/s to 165 Tb/s by transmitting polarization-multiplexed 16-QAM signals across the C-band. We show that the transmission penalty due to uncompensated inter-MG crosstalk is limited to 1.1 bit/symbol. We also show a significant DSP simplification in all considered scenarios, with a total MIMO tap reduction between 52<inline-formula><tex-math>$%$</tex-math></inline-formula> and 66<inline-formula><tex-math>$%$</tex-math></inline-formula> compared to conventional full-MIMO processing. Our results demonstrate the capability of simplified MIMO schemes to support high-capacity transmission over heterogeneous MMFs in SDM networks.","PeriodicalId":16144,"journal":{"name":"Journal of Lightwave Technology","volume":"44 17","pages":"7381-7390"},"PeriodicalIF":5.2,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11604019","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148877924","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

SWOR: A Scalable and Efficient Wavelength-Routed Optical Network-on-Chip SWOR：一种可扩展且高效的波长路由片上光网络

IF 5.2 1区工程技术

Journal of Lightwave Technology Pub Date : 2026-09-01 Epub Date: 2026-06-25 DOI: 10.1109/JLT.2026.3707613

Lijing Zhu;Guangming Zhang;Huaxi Gu;Yun Tan;Zhiheng Zhang

引用次数: 0

An Adaptive Dynamic Phase Demodulation Based on ϕ-OTDR 基于ϕ-OTDR的自适应动态相位解调

IF 5.2 1区工程技术

Journal of Lightwave Technology Pub Date : 2026-09-01 Epub Date: 2026-07-13 DOI: 10.1109/JLT.2026.3712385

Cong Chen;Yujiao Ran;Weifang Yang;Tao Ju;Peiyuan Xiong;Song Yang;Hao Du;Zujun Qin;Wentao Zhang

{"title":"An Adaptive Dynamic Phase Demodulation Based on ϕ-OTDR","authors":"Cong Chen;Yujiao Ran;Weifang Yang;Tao Ju;Peiyuan Xiong;Song Yang;Hao Du;Zujun Qin;Wentao Zhang","doi":"10.1109/JLT.2026.3712385","DOIUrl":"https://doi.org/10.1109/JLT.2026.3712385","url":null,"abstract":"In recent years, phase-sensitive optical time-domain reflectometry (ϕ-OTDR) has attracted considerable research interest for its ability to perform quantitative detection of dynamic strain. However, conventional demodulation algorithms, such as traditional phase unwrapping (TPU), are limited in their maximum measurable strain due to the inherent constraints of phase unwrapping itself. To overcome this limitation, we propose an adaptive dynamic phase demodulation (ADPD), designed to reconstruct signals from periodic or quasi-periodic vibration events of unknown magnitudes. The algorithm first evaluates the similarity between the waveforms recovered by TPU and the first-order temporal differential (TD) to autonomously determine the appropriate demodulation path—categorized as small or large strain. For small strains, either TPU or 1st-order TD is able to achieve lossless phase recovery. For large strains, an optimized temporal difference (OTD) is employed. A key theoretical advantage of this adaptive framework over conventional TD is its ability to expand the recoverable strain range per differentiation operation while simultaneously reducing the number of iterations required. Experimental results demonstrate that ADPD achieves an excellent signal-to-noise ratio and accurately reconstructs vibration waveforms.","PeriodicalId":16144,"journal":{"name":"Journal of Lightwave Technology","volume":"44 17","pages":"7735-7743"},"PeriodicalIF":5.2,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148877883","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