Journal of Optical Communications and Networking最新文献

Sensing earthquakes in aerial single- and multi-core fiber optic networks 在空中单芯和多芯光纤网络中感应地震

IF 4.3 2区计算机科学

Journal of Optical Communications and Networking Pub Date : 2026-04-01 Epub Date: 2026-03-31 DOI: 10.1364/JOCN.584845

Kristina Skarvang Vaskinn;Daniel J. Elson;Shohei Beppu;Daiki Soma;Steinar Bjornstad;Dag Roar Hjelme;Yuta Wakayama

引用次数: 0

Node architecture with unidirectional intra-node connections for subsystem-modular optical cross-connects 具有单向节点内连接的节点架构，用于子系统模块化光交叉连接

IF 4.3 2区计算机科学

Journal of Optical Communications and Networking Pub Date : 2026-04-01 DOI: 10.1364/JOCN.582560

Chenhao Chang;Ryuta Shiraki;Eiji Oki

{"title":"Node architecture with unidirectional intra-node connections for subsystem-modular optical cross-connects","authors":"Chenhao Chang;Ryuta Shiraki;Eiji Oki","doi":"10.1364/JOCN.582560","DOIUrl":"https://doi.org/10.1364/JOCN.582560","url":null,"abstract":"To cope with the scalability limitations of conventional optical cross-connects (OXCs), previous studies have introduced a subsystem-modular OXC architecture, which comprises multiple low-port-count switch modules called OXC-subsystems. This architecture can employ an intra-node structure that connects OXC-subsystems sequentially within a node. While this architecture allows for low-port-count OXC-subsystems to be used, it includes redundant intra-node connections between OXC-subsystems to ensure high flexibility of intra-node routing, which can lead to an increase in the number of OXC-subsystems deployed. This paper proposes a node architecture that adopts unidirectional intra-node connections, aiming to reduce redundant intra-node fibers and improve the utilization efficiency of subsystem ports. In the proposed node architecture, OXC-subsystems are connected in one direction, which can help to avoid redundant bidirectional connections and enable more ports to be used for inter-node connections. We formulate the network model with the proposed node architecture as an integer linear programming problem. For large-scale problems, we develop heuristic algorithms for routing and wavelength assignment to cope with the constraints introduced by unidirectional intra-node connections. Numerical results demonstrate that the network with the proposed node architecture reduces the total number of OXC-subsystems compared to that with the benchmark architecture in static network design. The results also confirm that the proposed architecture achieves the same blocking performance as the benchmark system while reducing the number of OXC-subsystems by up to 17.4%.","PeriodicalId":50103,"journal":{"name":"Journal of Optical Communications and Networking","volume":"18 4","pages":"378-393"},"PeriodicalIF":4.3,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147606173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Least-squares longitudinal power profile estimation based on pilot symbols and training sequences in DSP frames 基于导频符号和DSP帧训练序列的最小二乘纵向功率分布估计

IF 4.3 2区计算机科学

Journal of Optical Communications and Networking Pub Date : 2026-03-13 DOI: 10.1364/JOCN.584746

Du Tang;Yingjie Jiang;Hao Zhou;Fan Yang;Yutao Zhou;Baoxuan Quan;Yaojun Qiao;Hengying Xu;Chenglin Bai;Junjie Xie

{"title":"Least-squares longitudinal power profile estimation based on pilot symbols and training sequences in DSP frames","authors":"Du Tang;Yingjie Jiang;Hao Zhou;Fan Yang;Yutao Zhou;Baoxuan Quan;Yaojun Qiao;Hengying Xu;Chenglin Bai;Junjie Xie","doi":"10.1364/JOCN.584746","DOIUrl":"https://doi.org/10.1364/JOCN.584746","url":null,"abstract":"Longitudinal power profile estimation (PPE) is an essential forward-sensing technique for optical network monitoring, enabling early detection of abnormal loss and supporting the reliable operation of coherent transmission systems. The conventional least-squares PPE (LS-PPE) method either relies on post-FEC reference symbols, which introduce considerable digital signal processing (DSP) overhead, or employs hard-decision (HD) symbols, which inevitably suffer from a systematic power offset that increases with the pre-FEC bit-error rate (BER). In this paper, we present a comprehensive study of a new, to our knowledge, LS-PPE framework that leverages the pilot symbols (PSs) and training sequence (TS) inherently defined in DSP super-frames. By selectively constructing perturbation matrices from known PS and TS positions while discarding error-prone HD data, the proposed scheme eliminates systematic offset without relying on post-FEC information. Extensive simulations with 130 GBaud signals across multiple modulation formats and transmission distances demonstrate the robustness of the proposed method under diverse system conditions. Experimental validation on an 80 GBaud dual-polarization 16QAM transmission over 250 km standard single-mode fiber confirms estimation accuracy comparable to post-FEC benchmarks and superior robustness over HD-based LS-PPE, highlighting the potential of the PS&TS-based framework for practical deployment.","PeriodicalId":50103,"journal":{"name":"Journal of Optical Communications and Networking","volume":"18 4","pages":"B60-B71"},"PeriodicalIF":4.3,"publicationDate":"2026-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147440641","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Self-contained autonomous transmitter-power control of ONUs for energy and dynamic-range reduction in PONs 用于pon能量和动态范围缩减的onu的自包含自主发射功率控制

IF 4.3 2区计算机科学

Journal of Optical Communications and Networking Pub Date : 2026-03-12 DOI: 10.1364/JOCN.581961

Suguru Yamaoka;Takuro Matsumoto;Masaki Mizuno;Satoshi Shimazu;Masayoshi Sekiguchi;Tatsuya Shimada

引用次数: 0

Simultaneous distributed sensing and communication enabled by space and wavelength division multiplexing in a field-deployed seven-core fiber 在现场部署的七芯光纤中，通过空间和波分复用实现同步分布式传感和通信

IF 4.3 2区计算机科学

Journal of Optical Communications and Networking Pub Date : 2026-03-09 DOI: 10.1364/JOCN.584295

Zhanhang Wei;Yingyu Chen;Yichang Wu;Hanyu Gao;Ruqi Chen;Tianrui Li;Shanyong Li;Jiao Chai;Zhaohui Li;Chao Lu

{"title":"Simultaneous distributed sensing and communication enabled by space and wavelength division multiplexing in a field-deployed seven-core fiber","authors":"Zhanhang Wei;Yingyu Chen;Yichang Wu;Hanyu Gao;Ruqi Chen;Tianrui Li;Shanyong Li;Jiao Chai;Zhaohui Li;Chao Lu","doi":"10.1364/JOCN.584295","DOIUrl":"https://doi.org/10.1364/JOCN.584295","url":null,"abstract":"Integrated sensing and communication (ISAC) systems enable communication while concurrently endowing optical fiber with sensing capability, utilizing telecommunication networks to detect signals such as traffic. Multi-core fiber provides abundant exploitable spatial channels for ISAC systems. This work proposes a space division multiplexing distributed acoustic sensing (SDM-DAS) scheme for ISAC. By leveraging multi-component sensing signals transmitted through multiple fiber cores, SDM-DAS achieves a sensing sensitivity of <tex>$1.78; {text{p}}varepsilon/sqrt{text{Hz}}$</tex> at 10 km under a spatial resolution of 20 m. It also demonstrates a 10 dB suppression in fading noise and a detection bandwidth three times greater than that of conventional DAS. The system employs space and wavelength division multiplexing to enable co-propagation of communication and sensing signals within individual cores of a 16.5 km field-deployed seven-core fiber, achieving real-time traffic transmission with a net capacity of 117 Tb/s. Experimental results show that the setup introduces no inter-core crosstalk and does not degrade the bit error rate of the concurrently operating communication system. Furthermore, the proposed ISAC system integrating SDM-DAS successfully detects vibration signals from vehicular traffic and metro operations in real-world field deployment.","PeriodicalId":50103,"journal":{"name":"Journal of Optical Communications and Networking","volume":"18 4","pages":"B49-B59"},"PeriodicalIF":4.3,"publicationDate":"2026-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147440660","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fiber-based photonic integrated sensing and communication: enabling technologies and key challenges 基于光纤的光子集成传感与通信：使能技术和关键挑战

IF 4.3 2区计算机科学

Journal of Optical Communications and Networking Pub Date : 2026-03-06 DOI: 10.1364/JOCN.584969

Haijun He;Peng Li;Hailong Fan;Zhengyu Pu;Xihua Zou;Wei Pan;Lianshan Yan

{"title":"Fiber-based photonic integrated sensing and communication: enabling technologies and key challenges","authors":"Haijun He;Peng Li;Hailong Fan;Zhengyu Pu;Xihua Zou;Wei Pan;Lianshan Yan","doi":"10.1364/JOCN.584969","DOIUrl":"https://doi.org/10.1364/JOCN.584969","url":null,"abstract":"Optical communication networks constitute a critical component of modern information infrastructure, characterized by extensive coverage and high deployment density. The integration of sensing functionalities into optical networks has given rise to photonic integrated sensing and communication (P-ISAC) systems, which enable advanced functions such as network diagnosis, spatial positioning, and ocean observation, thereby accelerating the evolution toward intelligent optical networks. This review begins by outlining the main categories of P-ISAC, including visible-light-communication-, free-space-, fiber-, and microwave-photonics-based technologies, and briefly introduces their characteristics and application scenarios. A primary focus is concentrated on fiber-based P-ISAC systems, encompassing both forward and backward sensing mechanisms. In such systems, the overall performance is constrained by differing power requirements and signal properties between communication and sensing functions. Key technical challenges include designing optimized system architectures, achieving high spectral efficiency, and approaching or even surpassing the performance limits of integrated communication and sensing. The review further elaborates on recent advances in fiber-based P-ISAC organized by the level of system integration, such as wavelength-division multiplexing (WDM), frequency-division multiplexing (FDM), space-division multiplexing (SDM), and time–frequency multiplexing (TFM), analyzing their respective benefits and representative use cases. Finally, future development trends and key technologies in P-ISAC are outlined.","PeriodicalId":50103,"journal":{"name":"Journal of Optical Communications and Networking","volume":"18 4","pages":"B33-B48"},"PeriodicalIF":4.3,"publicationDate":"2026-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147362485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Intelligent on-line railway maintenance based on distributed acoustic sensing and machine learning 基于分布式声传感和机器学习的铁路在线智能维修

IF 4.3 2区计算机科学

Journal of Optical Communications and Networking Pub Date : 2026-03-05 DOI: 10.1364/JOCN.584158

Yuanyuan Yao;Xuping Zhang;Nasheeta Mazhar;Nuo Yuan;Xiao Zhou;Dao Zhang;Yixin Zhang;Zhijie Sasha Dong

{"title":"Intelligent on-line railway maintenance based on distributed acoustic sensing and machine learning","authors":"Yuanyuan Yao;Xuping Zhang;Nasheeta Mazhar;Nuo Yuan;Xiao Zhou;Dao Zhang;Yixin Zhang;Zhijie Sasha Dong","doi":"10.1364/JOCN.584158","DOIUrl":"https://doi.org/10.1364/JOCN.584158","url":null,"abstract":"With the increasing density of railway operations, infrastructure issues such as wheelset flats and loosening of sound barriers occur more frequently, while open railway environments are more susceptible to external disturbances, including intrusions, construction activities, and rockfalls, creating an urgent demand for efficient monitoring methods. Traditional railway safety monitoring methods face notable limitations, including restricted monitoring distances, vulnerability to environmental influences, and difficulty in maintenance. Distributed acoustic sensing (DAS) technology, with its long-distance monitoring capability, high sensitivity, and strong resistance to electromagnetic interference, has substantial potential to meet these pressing demands. To address the three typical monitoring targets in railway operation and maintenance, this paper proposes an integrated monitoring method based on DAS technology and machine learning methods. Experiments demonstrate that the proposed method possesses multi-track monitoring capability and can simultaneously detect and identify wheelset fault conditions. Meanwhile, it achieves identification accuracies of 97.03% for abnormal disturbance detection and 99.6% for sound barrier fault recognition. This method provides a reliable and promising technical solution for railway monitoring. It can even allow for the implementation of sensing functions using existing track-side communication cables.","PeriodicalId":50103,"journal":{"name":"Journal of Optical Communications and Networking","volume":"18 4","pages":"B19-B32"},"PeriodicalIF":4.3,"publicationDate":"2026-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147362325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Integrated secure communication and sensing based on simultaneous chaotic encryption and vibration detection with an RE-LFM signal 基于RE-LFM信号同时混沌加密和振动检测的集成安全通信与传感

IF 4.3 2区计算机科学

Journal of Optical Communications and Networking Pub Date : 2026-03-04 DOI: 10.1364/JOCN.583189

Tiankai Wang;Hongpeng Liang;Xing Li;Peng Hou;Yuehua An;Anbang Wang;Songnian Fu;Yuncai Wang;Yuwen Qin;Zhensen Gao

{"title":"Integrated secure communication and sensing based on simultaneous chaotic encryption and vibration detection with an RE-LFM signal","authors":"Tiankai Wang;Hongpeng Liang;Xing Li;Peng Hou;Yuehua An;Anbang Wang;Songnian Fu;Yuncai Wang;Yuwen Qin;Zhensen Gao","doi":"10.1364/JOCN.583189","DOIUrl":"https://doi.org/10.1364/JOCN.583189","url":null,"abstract":"The integration of sensing capabilities into secure optical transmission systems is emerging as a pivotal strategy for proactive security threat warning and anomaly detection. However, existing integrated sensing and communication (ISAC) schemes primarily focus on resource sharing, often overlooking the intrinsic security of the communication signals themselves. To address this critical gap, we propose and experimentally demonstrate a novel, to our knowledge, integrated secure communication and sensing (ISCAS) scheme based on simultaneous chaotic encryption and vibration detection utilizing a specially designed random envelope fluctuation linear frequency modulation signal. This uniquely designed signal serves a dual purpose: its random envelope facilitates physical layer encryption, while its LFM nature enables high-precision sensing. As a proof-of-principle demonstration, a 28 Gb/s on-off keying (OOK) confidential signal is securely transmitted over a 20 km single-mode fiber link. Simultaneously, a 1 kHz sinusoidal vibration applied at the 18 km point is detected and localized with an error of only 11.45 m. Our work validates an integrated solution that concurrently ensures information confidentiality and channel-sensing capability, paving the way for more resilient and intelligent optical networks.","PeriodicalId":50103,"journal":{"name":"Journal of Optical Communications and Networking","volume":"18 4","pages":"B9-B18"},"PeriodicalIF":4.3,"publicationDate":"2026-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147362560","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

ITU-T G.681: the first distributed fiber optic sensing standard for in-service terrestrial optical networks ITU-T G.681：第一个用于在轨地面光网络的分布式光纤传感标准

IF 4.3 2区计算机科学

Journal of Optical Communications and Networking Pub Date : 2026-03-03 DOI: 10.1364/JOCN.586758

Yoshifumi Wakisaka;Gabriele Di Rosa;Qirui Fan;Etienne Rochat;Andre Sandmann;Xiang Liu;Jun Shan Wey

引用次数: 0

Transformer-pointer DRL model for static resource allocation problems in SDM-EONs sdm - eon静态资源分配问题的变压器指针DRL模型

IF 4.3 2区计算机科学

Journal of Optical Communications and Networking Pub Date : 2026-03-02 DOI: 10.1364/JOCN.580228

Sibo Chen;Jiading Wang;Maiko Shigeno

{"title":"Transformer-pointer DRL model for static resource allocation problems in SDM-EONs","authors":"Sibo Chen;Jiading Wang;Maiko Shigeno","doi":"10.1364/JOCN.580228","DOIUrl":"https://doi.org/10.1364/JOCN.580228","url":null,"abstract":"The static resource allocation problem in space-division multiplexing elastic optical networks (SDM-EONs) requires joint optimization of routing, modulation, space, and spectrum assignment (RMSSA) for efficient resource use. Because integer-programming models and sophisticated heuristics are computationally expensive, the First-Fit algorithm is often used for fast feasible solutions, yet its quality is usually poor and highly order-dependent. To address this, we propose a deep reinforcement learning method for static resource allocation. We reformulate the combinatorial problem as sequence optimization by pairing with a fixed First-Fit allocator and prove that, for the space-spectrum assignment (SSA) subproblem, First-Fit is order-expressive and can achieve an optimal solution under a suitable ordering. A Transformer encoder extracts features of the request set, and a pointer-network decoder optimizes the output order. The trained network can be used as a black-box heuristic. Compared with hand-crafted orderings, it delivers higher solution quality with rapid inference speed, making it highly suitable for time-sensitive reconfiguration and large-scale planning tasks, while maintaining a runtime comparable to First-Fit. Finally, ablation studies verify the contributions of the encoder and decoder, and we attempt to interpret the trained network.","PeriodicalId":50103,"journal":{"name":"Journal of Optical Communications and Networking","volume":"18 3","pages":"315-328"},"PeriodicalIF":4.3,"publicationDate":"2026-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147362509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0