Journal of Optical Communications and Networking最新文献_第9页

Beyond 100G three-dimensional flexible coherent PON with time, frequency, and power resource-allocation capabilities 超越 100G 具有时间、频率和功率资源分配能力的三维灵活相干 PON

IF 5 2区计算机科学

Journal of Optical Communications and Networking Pub Date : 2024-04-08 DOI: 10.1364/JOCN.510661

Wangwei Shen;Guoqiang Li;Sizhe Xing;Zhongya Li;An Yan;Jiaye Wang;Nan Chi;Junwen Zhang

{"title":"Beyond 100G three-dimensional flexible coherent PON with time, frequency, and power resource-allocation capabilities","authors":"Wangwei Shen;Guoqiang Li;Sizhe Xing;Zhongya Li;An Yan;Jiaye Wang;Nan Chi;Junwen Zhang","doi":"10.1364/JOCN.510661","DOIUrl":"10.1364/JOCN.510661","url":null,"abstract":"Emerging services such as 8K/16K high-quality video streaming, virtual reality/augmented reality, beyond-5G mobile Internet, and edge computing are driving the need for even higher speed, capacity, and flexibility in optical access networks. Coherent passive optical networks (CPONs) have garnered significant attention in recent years due to their superior receiver sensitivity and high flexibility for 100G speeds and beyond. Research interest has surged in flexible, multi-dimensional multiplexing schemes that go beyond traditional time-division multiplexing (TDM). To further leverage the flexibility offered by CPONs, this paper proposes and experimentally demonstrates what we believe to be a novel three-dimensional flexible coherent PON (3D FLCS-CPON) for downstream applications. This system offers resource-allocation capabilities in the time, frequency, and power domains. By utilizing digital subcarrier multiplexing and power allocation in both the time and frequency domains, we achieve more flexible and adaptable access rates compared to traditional TDM and frequency-division multiplexing (FDM). We present in detail the operating principles of 3D FLCS-CPON in the downstream, along with steps for power calibration between subcarriers. As a proof of concept, we demonstrate the feasibility of 3D FLCS-CPON in the downstream using four subcarriers, achieving a peak data rate of \u0000<tex>${250};{rm Gb/s/}lambda$</tex>\u0000 over a 20-km fiber.","PeriodicalId":50103,"journal":{"name":"Journal of Optical Communications and Networking","volume":null,"pages":null},"PeriodicalIF":5.0,"publicationDate":"2024-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140238237","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

On the detection, modeling, and mitigation of anomalous QoT fluctuations in optical networks (ONDM 20 ) 关于光网络中异常 QoT 波动的检测、建模和缓解

IF 5 2区计算机科学

Journal of Optical Communications and Networking Pub Date : 2024-04-05 DOI: 10.1364/JOCN.514779

Camille Delezoide;Hassan Akbari;Petros Ramantanis;Fabien Boitier;Patricia Layec

引用次数: 0

Intent-based AI system in packet-optical networks towards 6G [Invited] (ECOC 20 ) 面向 6G 的分组光网络中基于意图的人工智能模型

IF 5 2区计算机科学

Journal of Optical Communications and Networking Pub Date : 2024-04-04 DOI: 10.1364/JOCN.514890

Paola Iovanna;Marzio Puleri;Giulio Bottari;Fabio Cavaliere

引用次数: 0

Optimizing satellite and core networks for a global quantum network 为全球量子网络优化卫星和核心网络

IF 5 2区计算机科学

Journal of Optical Communications and Networking Pub Date : 2024-04-01 DOI: 10.1364/JOCN.516271

Vasileios Karavias;Catherine White;Andrew Lord;Michael C. Payne

{"title":"Optimizing satellite and core networks for a global quantum network","authors":"Vasileios Karavias;Catherine White;Andrew Lord;Michael C. Payne","doi":"10.1364/JOCN.516271","DOIUrl":"https://doi.org/10.1364/JOCN.516271","url":null,"abstract":"Quantum key distribution (QKD) promises information theoretic security. However, the exponential decay of the secure key in optical fibers leads to limitations in long distance QKD distribution across fibers, which is necessary for global quantum networks (QNs). Satellite QKD can be used to generate keys over long distances bypassing fiber limitations and is thus a promising approach for global QNs. In this paper, we construct mixed integer linear program (MILP) models to investigate how to best connect the core fiber network to ground stations to minimize the overall network cost. We design one MILP that can provide a quantitative value for the number of satellites needed for a given configuration and another one to optimize the allocation of the core network nodes to ground stations to minimize the overall network cost. We use these models to investigate different strategies to allocate satellites to ground stations during a satellite overpass, showing that allocating satellites based on the expected transmission requirements can reduce the number of satellites needed in a network by up to 40% compared to randomly allocating the satellites to ground stations. Furthermore, we use these models to investigate securing the data center traffic in two networks, one local European network and one global network, and show that costs in the optimal configuration can be up to 40% cheaper than simply connecting core network sites to their geographically closest ground station.","PeriodicalId":50103,"journal":{"name":"Journal of Optical Communications and Networking","volume":null,"pages":null},"PeriodicalIF":5.0,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10487637","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140340135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cost dynamics of converged optical-wireless networks: enabling low-latency xRANs through a reconfigurable hybrid split 优化光网络与无线网络的融合：通过可重构混合分路实现低延迟 xRANs

IF 5 2区计算机科学

Journal of Optical Communications and Networking Pub Date : 2024-03-30 DOI: 10.1364/JOCN.509963

Md. Nooruzzaman;Xavier Fernando

{"title":"Cost dynamics of converged optical-wireless networks: enabling low-latency xRANs through a reconfigurable hybrid split","authors":"Md. Nooruzzaman;Xavier Fernando","doi":"10.1364/JOCN.509963","DOIUrl":"10.1364/JOCN.509963","url":null,"abstract":"Future 6G and beyond wireless networks are anticipated to be highly versatile, accommodating a wide range of services, from ultra-low-latency applications like autonomous vehicles and extended reality to enhanced mobile broadband and massive connectivity for the Internet of Things. In tackling this, xRANs (cloud/virtualized/open radio access networks) encounter significant challenges, including automation, interoperability, scalability, reconfigurability, and standardization, within crosshaul (comprising fronthaul, midhaul, and backhaul) networks. Therefore, the development of programmable converged optical-wireless networks with exceptional flexibility is crucial. This study concentrates on the design of integrated optical and wireless networks to achieve the reconfigurability necessary for automation and to fulfill diverse latency requirements. Initially, we analyze the latency contributions from different network segments and traffic factors in the xRAN, followed by a comprehensive examination of the associated cost dynamics. Subsequently, we investigate the feasibility of integrating high-layer and low-layer splits within the same network to achieve different latency levels. Finally, our study delves into the relationship between latency and cost for converged optical-wireless networks with varying mixed split scenarios and throughput levels. Overall, this article aims to assist network planners in making well-informed decisions that balance throughput performance, cost, and latency requirements in upcoming network deployments.","PeriodicalId":50103,"journal":{"name":"Journal of Optical Communications and Networking","volume":null,"pages":null},"PeriodicalIF":5.0,"publicationDate":"2024-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140983774","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

Mapping-varied modulation with labeling optimization for secure transmission in mode-division-multiplexed fiber-optic systems 在模式分割多路复用光纤系统中利用标签优化实现安全传输的映射变化调制技术

IF 5 2区计算机科学

Journal of Optical Communications and Networking Pub Date : 2024-03-28 DOI: 10.1364/JOCN.512467

Yi Lei;Qi Lu;Bin Chen;Zhongyi Guo

{"title":"Mapping-varied modulation with labeling optimization for secure transmission in mode-division-multiplexed fiber-optic systems","authors":"Yi Lei;Qi Lu;Bin Chen;Zhongyi Guo","doi":"10.1364/JOCN.512467","DOIUrl":"10.1364/JOCN.512467","url":null,"abstract":"To improve the physical-layer security of mode-division multiplexing (MDM) systems, a simple security scheme named mapping-varied modulation (MVM) is proposed in this paper by combining cryptographic and information-theoretic security. Specifically, on top of the information-theoretic security provided by the less-conditioned wiretap channel due to the larger mode-dependent loss induced by fiber-bend tapping, the proposed MVM security method varies the mapping rules of the adopted constellations for the subchannels (one subchannel corresponds to one mode) by using the inherently time-varying random channel state information (CSI) of the MDM fiber, under the assumption that an eavesdropper does not know the exact instantaneous CSI of the legitimate link. To maximize the difference among the binary labels of the constellation points in the same position for each subchannel, a labeling optimization method is proposed as well. Numerical results demonstrate the effectiveness of the proposed MVM method via bit-error ratio performance and secrecy rate, showing a potential way to improve the security of the MDM link for high-speed data transmission.","PeriodicalId":50103,"journal":{"name":"Journal of Optical Communications and Networking","volume":null,"pages":null},"PeriodicalIF":5.0,"publicationDate":"2024-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140247080","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

Orchid: enhancing HPC interconnection networks through infrequent topology reconfiguration 兰花通过不频繁的拓扑重组增强高性能计算互连网络

IF 5 2区计算机科学

Journal of Optical Communications and Networking Pub Date : 2024-03-22 DOI: 10.1364/JOCN.516031

Liang Qin;Huaxi Gu;Xiaoshan Yu;Zheyi Cai;Junchen Liu

{"title":"Orchid: enhancing HPC interconnection networks through infrequent topology reconfiguration","authors":"Liang Qin;Huaxi Gu;Xiaoshan Yu;Zheyi Cai;Junchen Liu","doi":"10.1364/JOCN.516031","DOIUrl":"10.1364/JOCN.516031","url":null,"abstract":"Interconnection networks are key components of high-performance computing (HPC) systems. As HPC evolves towards the exascale era, providing sufficient bisection bandwidth between computing node pairs through oversubscription in traditional networks becomes prohibitively expensive and impractical. Over the past decade, several architectures leveraging optical circuit switches (OCSs) for dynamic link bandwidth allocation have gained traction. These architectures require frequent network topology reconfiguration to adapt to changing traffic demands. However, practical implementation remains hampered by the long reconfiguration delays inherent in OCS technology. We propose Orchid, an architecture that leverages OCSs to achieve infrequent topology reconfigurations, effectively addressing the problem of long reconfiguration delays. A key innovation of Orchid is its ability to extract stable traffic matrices from historical data. This functionality guides the reconfiguration of the topology without the need for adjustments with each traffic matrix, thereby enabling the sharing of OCS overhead over an extended timeframe. Furthermore, Orchid addresses potential congestion arising from unexpected traffic through the joint design of OCS configuration and routing, ensuring an even distribution of traffic across global links. Extensive experiments using real HPC application traces and synthetic traffic demonstrate that Orchid achieves significant performance improvements compared to existing HPC interconnection networks. Specifically, Orchid reduces packet delay by at least \u0000<tex>${3} times$</tex>\u0000 and enhances throughput by up to 60%.","PeriodicalId":50103,"journal":{"name":"Journal of Optical Communications and Networking","volume":null,"pages":null},"PeriodicalIF":5.0,"publicationDate":"2024-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140669166","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

Flexible waveband routing node architecture for spatial-division and multi-band optical networks [Invited] 空间分割和多波段光网络的灵活波段路由节点架构 [特邀]

IF 5 2区计算机科学

Journal of Optical Communications and Networking Pub Date : 2024-03-22 DOI: 10.1364/JOCN.516234

Hiroshi Hasegawa

引用次数: 0

Digital-twin-assisted meta learning for soft-failure localization in ROADM-based optical networks 基于 ROADM 的光网络中用于软故障定位的数字孪生辅助元学习

IF 5 2区计算机科学

Journal of Optical Communications and Networking Pub Date : 2024-03-21 DOI: 10.1364/JOCN.517551

Ruikun Wang;Jiawei Zhang;Zhiqun Gu;Memedhe Ibrahimi;Bojun Zhang;Francesco Musumeci;Massimo Tornatore;Yuefeng Ji

{"title":"Digital-twin-assisted meta learning for soft-failure localization in ROADM-based optical networks","authors":"Ruikun Wang;Jiawei Zhang;Zhiqun Gu;Memedhe Ibrahimi;Bojun Zhang;Francesco Musumeci;Massimo Tornatore;Yuefeng Ji","doi":"10.1364/JOCN.517551","DOIUrl":"https://doi.org/10.1364/JOCN.517551","url":null,"abstract":"Reconfigurable optical add/drop multiplexer (ROADM) nodes are evolving towards high-degree architectures to support growing traffic and enable flexible network connectivity. Due to the complex composition of high-degree ROADMs, soft failures may occur between both inter- and intra-node components, like wavelength selective switches and fiber spans. The intricate ROADM structure significantly contributes to the challenge of localizing inter-/intra-node soft failures in ROADM-based optical networks. Machine learning (ML) has shown to be a promising solution to the problem of soft-failure localization, enabling network operators to take accurate and swift measures to overcome such challenges. However, data scarcity is a main hindrance when using ML for soft-failure localization, especially in the complex scenario of inter- and intra-node soft failures. In this work, we propose a digital-twin-assisted meta-learning framework to localize inter-/intra-node soft failures with limited samples. In our proposed framework, we construct several mirror models using a digital twin of the physical optical network and then generate multiple training tasks. These training tasks serve as pretraining data for the meta learner. Then, we use real data for fine-tuning and testing of the meta learner. The proposed framework is compared with the rule-based reasoning method, transfer-learning-based method, and artificial-neural-network-based method with no pretraining. Experimental results indicate that the proposed framework improves localization accuracy by over 15%, 33%, and 54%, on average, compared to benchmark approaches, respectively.","PeriodicalId":50103,"journal":{"name":"Journal of Optical Communications and Networking","volume":null,"pages":null},"PeriodicalIF":5.0,"publicationDate":"2024-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140188440","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

Enhancing secret key distribution through advanced color modulation in visible light communication 可见光通信系统彩色调制的安全增强加密

IF 5 2区计算机科学

Journal of Optical Communications and Networking Pub Date : 2024-03-20 DOI: 10.1364/JOCN.520386

Goncalo Figueiredo;Rute A. S. Ferreira;Paulo S. Andre

{"title":"Enhancing secret key distribution through advanced color modulation in visible light communication","authors":"Goncalo Figueiredo;Rute A. S. Ferreira;Paulo S. Andre","doi":"10.1364/JOCN.520386","DOIUrl":"10.1364/JOCN.520386","url":null,"abstract":"Visible light communication (VLC) has emerged as a dynamic area of research poised to revolutionize high-speed wireless communication. VLC technology uses light-emitting diodes (LEDs) within existing infrastructure to emit light within the visible spectrum. VLC complements traditional radio frequency (RF) communications, addressing its inherent limitations and drawbacks. To navigate the demands of modern urban environments, VLC systems must prioritize secure data transmission, accessibility, and economic feasibility, particularly within the framework of smart cities. We introduce what is to our knowledge a novel privacy-enhanced VLC system for optical wireless communication. Leveraging color data modulation techniques and the intricacies of a hyperchaotic three-dimensional map, this innovative approach ensures robust security. By employing diverse LED colors for data transmission and exploiting the unpredictable mathematical properties of hyperchaotic maps, enhanced privacy is achieved. The performance of the proposed system was rigorously evaluated through various tests, manipulating initial control parameters of the encryption process with the hyperchaotic map, as well as adjusting message length and content. Tests were conducted over a 1 m connection distance at a symbol transmission rate of 2 baud. Remarkably, the proposed system demonstrated high accuracy in message recovery, achieving a symbol error rate (SER) of only 0.02 at an incident optical power of 22 µW. We highlight the critical importance of precise decryption parameter values in the proposed method, demonstrating the necessity for accuracy within the range of \u0000<tex>${10}^{- 15}$</tex>\u0000 for each decryption parameter; it underscores the indispensability of meticulous parameter calibration to ensure the correct decryption of transmitted symbols. These results pave the way for applications where absolute security is imperative, particularly in smart city environments, such as for key distribution purposes.","PeriodicalId":50103,"journal":{"name":"Journal of Optical Communications and Networking","volume":null,"pages":null},"PeriodicalIF":5.0,"publicationDate":"2024-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141017316","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