Journal of Optical Communications and Networking最新文献

Interpretable optical network fault detection and localization with multi-task graph prototype learning 基于多任务图原型学习的可解释光网络故障检测与定位

IF 4 2区计算机科学

Journal of Optical Communications and Networking Pub Date : 2025-07-18 DOI: 10.1364/JOCN.562633

Xiaokang Chen;Xiaoliang Chen;Zuqing Zhu

{"title":"Interpretable optical network fault detection and localization with multi-task graph prototype learning","authors":"Xiaokang Chen;Xiaoliang Chen;Zuqing Zhu","doi":"10.1364/JOCN.562633","DOIUrl":"https://doi.org/10.1364/JOCN.562633","url":null,"abstract":"The recent advances in machine learning (ML) have promoted data-driven automated fault management in optical networks. However, existing ML-aided fault management approaches mainly rely on black-box models that lack intrinsic interpretability to secure their trustworthiness in mission-critical operation scenarios. In this paper, we propose an interpretable optical network fault detection and localization design leveraging multi-task graph prototype learning (MT-GPL). MT-GPL models an optical network and the optical performance monitoring data collected in it as graph-structured data and makes use of graph neural networks to learn graph embeddings that capture both topological correlations (for fault localization) and fault discriminative patterns (for root cause analysis). MT-GPL interprets its reasoning by (i) introducing a prototype layer that learns physics-aligned prototypes indicative of each fault class using the Monte Carlo tree search method and (ii) performing predictions based on the similarities between the embedding of an input graph and the learned prototypes. To enhance the scalability and interpretability of MT-GPL, we develop a multi-task architecture that performs concurrent fault localization and reasoning with node-level and device-level prototype learning and fault predictions. Performance evaluations show that our proposal achieves <tex>${gt}6.5%$</tex> higher prediction accuracy than the multi-layer perceptron model, while the visualizations of its reasoning processes verify the validity of its interpretability.","PeriodicalId":50103,"journal":{"name":"Journal of Optical Communications and Networking","volume":"17 9","pages":"D73-D82"},"PeriodicalIF":4.0,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144657451","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

Post-disaster cloud-service restoration through datacenter-carrier cooperation 通过数据中心-运营商合作实现灾后云服务恢复

IF 4 2区计算机科学

Journal of Optical Communications and Networking Pub Date : 2025-07-17 DOI: 10.1364/JOCN.561579

Subhadeep Sahoo;Sugang Xu;Sifat Ferdousi;Yusuke Hirota;Massimo Tornatore;Yoshinari Awaji;Biswanath Mukherjee

引用次数: 0

Multi-entity cooperation platform facilitating network-cloud recovery 多实体合作平台，促进网络云恢复

IF 4 2区计算机科学

Journal of Optical Communications and Networking Pub Date : 2025-07-16 DOI: 10.1364/JOCN.560240

Sugang Xu;Subhadeep Sahoo;Sifat Ferdousi;Masaki Shiraiwa;Yusuke Hirota;Massimo Tornatore;Yoshinari Awaji;Biswanath Mukherjee

引用次数: 0

Low-complexity SOP-based vibration broadband sensing and efficient recognition for stable IM/DD optical interconnects in data centers 基于低复杂度sop的数据中心稳定IM/DD光互连的振动宽带传感与高效识别

IF 4 2区计算机科学

Journal of Optical Communications and Networking Pub Date : 2025-07-15 DOI: 10.1364/JOCN.559810

Bang Yang;Jianwei Tang;Huiyang Yu;Yaguang Hao;Shuang Gao;Linsheng Fan;Yong Yao;Junpeng Liang;Jinlong Wei;Yanfu Yang

{"title":"Low-complexity SOP-based vibration broadband sensing and efficient recognition for stable IM/DD optical interconnects in data centers","authors":"Bang Yang;Jianwei Tang;Huiyang Yu;Yaguang Hao;Shuang Gao;Linsheng Fan;Yong Yao;Junpeng Liang;Jinlong Wei;Yanfu Yang","doi":"10.1364/JOCN.559810","DOIUrl":"https://doi.org/10.1364/JOCN.559810","url":null,"abstract":"With the rapid advancement of artificial intelligence (AI) technologies, the stability of optical interconnects in data centers has become increasingly important. Vibration sensing integrated in optical interconnect systems is conducive to identifying external disturbances in optical interconnects and achieving intelligent operation and maintenance. This paper proposes an easy-integration vibration-sensing scheme based on the state of polarization (SOP) of the fiber link. This scheme combines photonic technology with low-complexity digital signal processing (DSP) to detect link vibrations, ensuring full compatibility with intensity-modulation direct-detection (IM/DD) optical interconnect systems while minimizing additional complexity. Experiments show that our proposed scheme effectively detects SOP variations across a wide frequency range (0.5 Hz to 159 kHz). Based on the sensing system, a recognition scheme leveraging the Gramian angular field analysis and convolutional neural network (CNN) is proposed to recognize four types of vibration events simulated by a robotic arm, achieving a classification accuracy of 98%. Furthermore, experimental results confirm that the sensing system can detect SOP variations even under conditions of extremely low received optical power (ROP), where the communication system becomes inoperative. The proposed scheme enables robust event detection with minimal hardware overhead, which is suitable for real-world deployment in pluggable optical modules.","PeriodicalId":50103,"journal":{"name":"Journal of Optical Communications and Networking","volume":"17 8","pages":"692-699"},"PeriodicalIF":4.0,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144634781","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

Performance investigation on disaggregated artificial intelligence data centers beyond rack scale with optical switching 基于光交换的机架级以上分解人工智能数据中心性能研究

IF 4 2区计算机科学

Journal of Optical Communications and Networking Pub Date : 2025-07-14 DOI: 10.1364/JOCN.559613

Fulong Yan;Hanting Huang;Yanxian Bi;Peizhao Li;Zhiwen Xue;Chao Li;Zichen Liu;Zhixue He;Zihao Li;QiDong Cao

{"title":"Performance investigation on disaggregated artificial intelligence data centers beyond rack scale with optical switching","authors":"Fulong Yan;Hanting Huang;Yanxian Bi;Peizhao Li;Zhiwen Xue;Chao Li;Zichen Liu;Zhixue He;Zihao Li;QiDong Cao","doi":"10.1364/JOCN.559613","DOIUrl":"https://doi.org/10.1364/JOCN.559613","url":null,"abstract":"Accompanying the ever-increasing scale of big data applications, artificial intelligence data centers are facing the issue of resource fragments, resulting in a low network resource utilization ratio. Disaggregating the network resources is an efficient solution to improve the network resource utilization ratio by allocating the required amount of resources. In this paper, we focus on the problem of CPU and GPU resource disaggregation for an artificial intelligence data center. We carry out investigations for data center disaggregation exploiting optical switching. The results show that PCIe over optical (PO) guarantees 3 µs latency with 62 m of fiber. Compared with the PCIe with Ethernet switch (PE) solution, the PO scheme saves 48.3% completion time for the backprop application. Moreover, we compare the cost and power consumption of a data center architecture that scales out as the square of the port count of an optical packet switch (OPSquare) employing a PO scheme with respect to variants of OPSquare and Leaf-Spine under different network scales and interface bandwidths. Results show that the optical network architecture with the PO scheme saves 31.6% in cost and 12% in power consumption, respectively, compared with the Leaf-Spine with Ethernet solution.","PeriodicalId":50103,"journal":{"name":"Journal of Optical Communications and Networking","volume":"17 9","pages":"D43-D52"},"PeriodicalIF":4.0,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144623872","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

Cost-effective and reliable multi-period optical network planning comparing capacity and topology upgrades 性价比高、可靠性高的多周期光网络规划，比较容量和拓扑升级

IF 4 2区计算机科学

Journal of Optical Communications and Networking Pub Date : 2025-07-14 DOI: 10.1364/JOCN.560330

Maria Samonaki;Yu-Hsuan Yeh;Wolfgang Kellerer;Carmen Mas-Machuca

{"title":"Cost-effective and reliable multi-period optical network planning comparing capacity and topology upgrades","authors":"Maria Samonaki;Yu-Hsuan Yeh;Wolfgang Kellerer;Carmen Mas-Machuca","doi":"10.1364/JOCN.560330","DOIUrl":"https://doi.org/10.1364/JOCN.560330","url":null,"abstract":"This paper investigates cost-effective and reliable multi-period planning of optical networks. To meet the expected demand increase, three planning optimization approaches are proposed and compared: spatial division multiplexing using the C-band (SDM-CB), ultra-wideband transmission in the C + L bands (UWB-MB), and topology upgrade (TopUp-CB). Each approach is evaluated through an integer linear programming formulation based on a cost model that considers the costs of lightpaths, fiber deployment, and link installation under two reliability requirements: 1 + 1 demand protection and minimal bit error rate (BER) for signal transmission. Simulation results on the Nobel Germany and NSFNET topologies reveal critical trade-offs between cost and resource utilization to prevent blocking. For Nobel Germany, UWB-MB requires 50% fewer fibers than SDM-CB but is 5% more expensive under high L-band transceiver costs. For NSFNET, when a lower transmission BER is required, the planning costs increase up to 150% compared to a higher BER value, while TopUp-CB can reduce the costs by up to 35% and 25% through the optimal addition of new links compared to SDM-CB and UWB-MB, respectively. These findings provide actionable guidelines for network operators to select the most suitable planning strategies under varying cost, capacity, and reliability constraints.","PeriodicalId":50103,"journal":{"name":"Journal of Optical Communications and Networking","volume":"17 9","pages":"D30-D42"},"PeriodicalIF":4.0,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144623873","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

Demonstration of a multi-technology 6G transport network integrating THz and optical network technologies empowered by federated learning 演示一个多技术6G传输网络，该网络集成了通过联邦学习授权的太赫兹和光网络技术

IF 4 2区计算机科学

Journal of Optical Communications and Networking Pub Date : 2025-07-11 DOI: 10.1364/JOCN.551626

M. Anastasopoulos;A. Tzanakaki;Y. Jian;L. Lopacinski;J. Gutierrez;I. Mesogiti;E. Theodoropoulou;G. Lyberopoulos

{"title":"Demonstration of a multi-technology 6G transport network integrating THz and optical network technologies empowered by federated learning","authors":"M. Anastasopoulos;A. Tzanakaki;Y. Jian;L. Lopacinski;J. Gutierrez;I. Mesogiti;E. Theodoropoulou;G. Lyberopoulos","doi":"10.1364/JOCN.551626","DOIUrl":"https://doi.org/10.1364/JOCN.551626","url":null,"abstract":"This paper proposes a 6G architecture that adopts a multi-technology transport network integrating THz links and optical network technologies to interconnect the 6G radio access network and core domains. The proposed solution operates in a self-organized manner, taking advantage of the software defined networking (SDN) control of the optical network, while suitable SDN control is purposely developed for the THz solution. An end-to-end (E2E) Service Management and Orchestration (SMO) layer is adopted, offering intelligence capabilities in service provisioning and resource allocation across the 6G infrastructure through the adoption of a federated learning (FL) scheme. The proposed architecture and the developed control scheme are validated through an experimental demonstration. To the best of the authors’ knowledge, this is the first experimental demonstration of an autonomously controlled 6G network implementation integrating optical network technologies and THz links in a common transport network. The developed intelligent management framework empowered by FL to jointly optimize THz and multi-vendor optical network equipment supporting 6G services is also experimentally showcased.","PeriodicalId":50103,"journal":{"name":"Journal of Optical Communications and Networking","volume":"17 8","pages":"C156-C169"},"PeriodicalIF":4.0,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144606432","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

Traffic-aware and physically constrained optical network growth techniques 流量感知和物理约束光网络增长技术

IF 4 2区计算机科学

Journal of Optical Communications and Networking Pub Date : 2025-07-10 DOI: 10.1364/JOCN.559480

Rasoul Sadeghi;Robin Matzner;Yi-Zhi Xu;Alejandra Beghelli;David Saad;Polina Bayvel

{"title":"Traffic-aware and physically constrained optical network growth techniques","authors":"Rasoul Sadeghi;Robin Matzner;Yi-Zhi Xu;Alejandra Beghelli;David Saad;Polina Bayvel","doi":"10.1364/JOCN.559480","DOIUrl":"https://doi.org/10.1364/JOCN.559480","url":null,"abstract":"Maximizing network throughput is crucial for operators facing rapid traffic growth. One effective strategy for achieving this is through targeted network expansion—strategically adding edges to maximize network throughput, not only for a specific set of demands but also for future traffic growth. Finding the optimal combination of new edges to maximize throughput is an NP-hard optimization problem. Therefore, in this work, we propose four scalable network expansion methods that consider the network traffic distribution and the network’s physical and structural properties to select the edges to be added to the optical infrastructure. The proposed methods belong to either the cut set category or the cut set and message-passing combinations (hybrid) category. The cut set methods aim to add new edges that eliminate structural bottlenecks in the network, prioritizing either those that decrease path length or increase signal-to-noise ratio (SNR). The hybrid methods leverage the strengths of both message-passing and cut set approaches by strategically selecting new edges to reduce path lengths through message passing while targeting bottlenecks with the cut set technique. We applied these methods to 100 NFSNet-based synthetic graphs and 44 real-world topologies and evaluated their performance against two baseline methods previously evaluated in the literature. Numerical results show that the proposed methods outperform the baseline approaches. Methods taking the SNR into account perform better than those considering path lengths, and topology properties significantly impact the performance of the proposed network expansion methods.","PeriodicalId":50103,"journal":{"name":"Journal of Optical Communications and Networking","volume":"17 8","pages":"676-691"},"PeriodicalIF":4.0,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144597701","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

DRAMA-PRO+: disaster recovery algorithm with mitigation awareness for protected translucent elastic optical networks DRAMA-PRO+：针对受保护半透明弹性光网络的具有缓解意识的灾难恢复算法

IF 4 2区计算机科学

Journal of Optical Communications and Networking Pub Date : 2025-07-08 DOI: 10.1364/JOCN.561155

Rujia Zou;Shih-Chun Lin;Motoharu Matsuura;Hiroshi Hasegawa;Gustavo Figueiredo;Suresh Subramaniam

{"title":"DRAMA-PRO+: disaster recovery algorithm with mitigation awareness for protected translucent elastic optical networks","authors":"Rujia Zou;Shih-Chun Lin;Motoharu Matsuura;Hiroshi Hasegawa;Gustavo Figueiredo;Suresh Subramaniam","doi":"10.1364/JOCN.561155","DOIUrl":"https://doi.org/10.1364/JOCN.561155","url":null,"abstract":"Elasticoptical networks (EONs) have become promising solutions to meet the surging demand from 5G and cloud applications, offering high spectrum utilization through flexible resource assignment. In translucent EONs, spectrum efficiency is further enhanced by deploying regenerators. This high flexibility of EONs makes developing efficient survivability mechanisms a significant challenge, especially under large-scale failures. We consider multiclass traffic that includes a mix of protected and unprotected lightpaths (LPs) and allow lightpaths to be recovered with degraded service with an appropriate penalty by leveraging the concept of a mitigation zone introduced in previous work. A heuristic algorithm for disaster recovery with mitigation awareness for protected translucent EONs called DRAMA-PRO+ is proposed with the objective of minimizing the penalty. The algorithm integrates protection into the recovery process and incorporates regenerator utilization. Simulation results show that the proposed algorithm has significantly better performance in terms of both blocking ratio and penalty than baseline algorithms in the studied cases.","PeriodicalId":50103,"journal":{"name":"Journal of Optical Communications and Networking","volume":"17 9","pages":"D18-D29"},"PeriodicalIF":4.0,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144581496","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

Optimal placement of multi-wavelength integrated tunable transmitters in reconfigurable optical data center interconnection networks with multi-hop routing 多跳路由可重构光数据中心互连网络中多波长集成可调谐发射机的优化配置

IF 4 2区计算机科学

Journal of Optical Communications and Networking Pub Date : 2025-07-04 DOI: 10.1364/JOCN.554450

Jiawen Zhu;Baojun Chen;Weiqiang Sun;Tong Ye;Weisheng Hu

{"title":"Optimal placement of multi-wavelength integrated tunable transmitters in reconfigurable optical data center interconnection networks with multi-hop routing","authors":"Jiawen Zhu;Baojun Chen;Weiqiang Sun;Tong Ye;Weisheng Hu","doi":"10.1364/JOCN.554450","DOIUrl":"https://doi.org/10.1364/JOCN.554450","url":null,"abstract":"Circuit-switched technologies have created the enticing possibility of guaranteeing the performance of data center networks under bursty and skewed traffic. In our prior work [J. Opt. Commun. Netw.16, 990 (2024)], we proposed to use multi-wavelength integrated tunable transmitters (MWITTs) to provide dynamic capacity sharing in modular arrayed waveguide grating-based interconnection networks. However, with one-hop routing, the scope of wavelength sharing is limited, and the required number of MWITTs to maintain good performance will increase drastically when hotspot top-of-racks are distributed sparsely. In this paper, we propose expanding the scope of dynamic capacity sharing of MWITTs by incorporating a multi-hop routing mechanism, such that fewer MWITTs are needed to achieve comparable performance levels. We model the problem of the placement of MWITTs with multi-hop routing into a binary quadratic-constrained linear programming problem. Two feasible placements, namely, star-topology placement and interconnected-group placement, are proposed and proved optimal in specific scenarios. Furthermore, an efficient heuristic algorithm combined with the above two feasible placements, the simulated annealing-based MWITT placing algorithm (SAMPA), is proposed to solve this placement problem. Results show the high accuracy and low computational complexity of SAMPA. We compare the minimum number of required MWITTs and the blocking probability under one-hop and multi-hop routing through simulation to prove that multi-hop routing can achieve better performance with fewer MWITTs. The number of MWITTs is 128 and 30, to achieve the blocking probability of 0.0169 and <tex>$1.4 times {10^{- 3}}$</tex>, respectively, for one-hop routing and multi-hop routing, when the traffic burstiness is 0.5, traffic skewness is 0.6, and number of hotspot racks is 16 in a 128-rack interconnection network.","PeriodicalId":50103,"journal":{"name":"Journal of Optical Communications and Networking","volume":"17 8","pages":"659-675"},"PeriodicalIF":4.0,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144557854","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