Journal of Optical Communications and Networking最新文献_第6页

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

Experimental investigation on the fundamental physical-layer capabilities for converged metro–access architectures using coherent transceivers 基于相干收发器的融合城域接入体系结构基本物理层性能的实验研究

IF 4 2区计算机科学

Journal of Optical Communications and Networking Pub Date : 2025-07-02 DOI: 10.1364/JOCN.558563

Giuseppe Rizzelli;Mariacristina Casasco;Emilio Riccardi;Annachiara Pagano;Valter Ferrero;Roberto Gaudino

引用次数: 0

Demonstration of an SDN-enabled, resilient, rate-adaptable hybrid fiber/outdoor FSO/mmWave transport for a 6G X-haul architecture 为6G X-haul架构演示支持sdn、弹性、速率自适应的混合光纤/室外FSO/毫米波传输

IF 4 2区计算机科学

Journal of Optical Communications and Networking Pub Date : 2025-06-30 DOI: 10.1364/JOCN.551852

E. Kyriazi;P. Toumasis;G. Brestas;P. Kourelias;A. Ntanos;A. Stathis;G. Poulopoulos;D. Diakakis;I. Mesogiti;E. Theodoropoulou;G. Lymperopoulos;G. Giannoulis;J. Sterle;D. Apostolopoulos;H. Avramopoulos

{"title":"Demonstration of an SDN-enabled, resilient, rate-adaptable hybrid fiber/outdoor FSO/mmWave transport for a 6G X-haul architecture","authors":"E. Kyriazi;P. Toumasis;G. Brestas;P. Kourelias;A. Ntanos;A. Stathis;G. Poulopoulos;D. Diakakis;I. Mesogiti;E. Theodoropoulou;G. Lymperopoulos;G. Giannoulis;J. Sterle;D. Apostolopoulos;H. Avramopoulos","doi":"10.1364/JOCN.551852","DOIUrl":"https://doi.org/10.1364/JOCN.551852","url":null,"abstract":"The transition to 6G networks will necessitate advanced infrastructures to handle massive device integration, exponential data growth, and low latency requirements. The proposed 6G architecture will integrate diverse technologies, such as free space optical (FSO) and mmWave, into the existing fiber infrastructure. This work demonstrates a hybrid 6G X-haul solution consisting of 10 km fiber/100 m FSO/5 m mmWave that employs a software-defined network as an interface platform to improve network resilience and flexibility in 6G networks. For this purpose, real-time traffic management and dynamic link switching operate within 600 µs, interacting with the heterogeneous physical layers. This enables the system to adapt to changing conditions and failures, ensuring continuous and uninterrupted connectivity. Experimental results proved that this dynamic software-defined networking-based topology can manage high-capacity data rates of up to 60 Gbps while supporting adaptive modulation schemes below hard decision-forward error correction.","PeriodicalId":50103,"journal":{"name":"Journal of Optical Communications and Networking","volume":"17 7","pages":"638-647"},"PeriodicalIF":4.0,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144519324","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

Introduction to the ECOC 2024 Special Edition ECOC 2024特别版简介

IF 4 2区计算机科学

Journal of Optical Communications and Networking Pub Date : 2025-06-30 DOI: 10.1364/JOCN.570945

Andrew Lord

引用次数: 0

Reinforcement learning for dynamic resource allocation in optical networks: hype or hope? 光网络中动态资源分配的强化学习：炒作还是希望？

IF 4 2区计算机科学

Journal of Optical Communications and Networking Pub Date : 2025-06-27 DOI: 10.1364/JOCN.559990

Michael Doherty;Robin Matzner;Rasoul Sadeghi;Polina Bayvel;Alejandra Beghelli

{"title":"Reinforcement learning for dynamic resource allocation in optical networks: hype or hope?","authors":"Michael Doherty;Robin Matzner;Rasoul Sadeghi;Polina Bayvel;Alejandra Beghelli","doi":"10.1364/JOCN.559990","DOIUrl":"https://doi.org/10.1364/JOCN.559990","url":null,"abstract":"The application of reinforcement learning (RL) to dynamic resource allocation in optical networks has been the focus of intense research activity in recent years, with almost 100 peer-reviewed papers. We present a review of progress in this field and identify weaknesses in benchmarking practices and reproducibility. To demonstrate best practice, we exactly recreate the problem settings from five landmark papers and apply improved benchmarks. To determine the best benchmarks, we evaluate several heuristic algorithms and optimize the candidate path count and sort criteria for path selection. We apply the improved benchmarks and demonstrate that simple heuristics outperform the published RL solutions, often with an order of magnitude lower blocking probability. Finally, to estimate the limits of improvement on the benchmarks, we present empirical lower bounds on blocking probability using a novel, to our knowledge, defragmentation-based method. Our method estimates that traffic load can be increased by 19%–36% for the same blocking in our examples, which may motivate further research on optimized resource allocation. We make our simulation framework and results openly available to promote reproducible research and standardized evaluation: https://doi.org/10.5281/zenodo.12594495.","PeriodicalId":50103,"journal":{"name":"Journal of Optical Communications and Networking","volume":"17 9","pages":"D1-D17"},"PeriodicalIF":4.0,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144501950","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

Failure management in optical networks with ML: a tutorial on applications, challenges, and pitfalls [Invited] 基于ML的光网络故障管理：应用、挑战和陷阱教程[特邀]

IF 4 2区计算机科学

Journal of Optical Communications and Networking Pub Date : 2025-06-27 DOI: 10.1364/JOCN.551910

Francesco Musumeci;Massimo Tornatore

引用次数: 0