Journal of Optical Networking最新文献

Spectrally efficient hybrid multiplexing and demultiplexing schemes toward the integration of microwave and millimeter-wave radio-over-fiber systems in a WDM-PON infrastructure 面向WDM-PON基础设施中微波和毫米波光纤无线电系统集成的频谱高效混合复用和解复用方案

Journal of Optical Networking Pub Date : 2009-05-01 DOI: 10.1364/JON.8.000462

M. Bakaul, A. Nirmalathas, C. Lim, D. Novak, R. Waterhouse

引用次数: 6

Minimizing transceivers in optical path networks 光路网络中收发器的最小化

Journal of Optical Networking Pub Date : 2009-05-01 DOI: 10.1364/JON.8.000454

P. Iyer, R. Dutta, C. Savage

{"title":"Minimizing transceivers in optical path networks","authors":"P. Iyer, R. Dutta, C. Savage","doi":"10.1364/JON.8.000454","DOIUrl":"https://doi.org/10.1364/JON.8.000454","url":null,"abstract":"The problem of routing traffic on multihop clear optical channels and deciding the virtual topology of optical channels to form on a physical network of fibers to minimize the cost of electronic switching equipment has become known as traffic grooming in optical networks. Traffic grooming is recognized as an important research area, because the joint opto-electric routing problem is a hard one, yet necessary because of the large cost of pure electronic switching. This problem has been shown to be NP-complete (nondeterminstic polynomial complete) even for very simple practical topologies such as a path network. In previous work, we have shown that at least the subproblem of routing traffic on a given virtual topology to minimize electronic switching (NP-hard for path networks with arbitrary traffic matrices) becomes polynomial when the traffic on the path is restricted to be egress traffic, that is, all traffic requests are destined for a single egress node. In that work, the objective was to minimize the raw OEO (opto-electro-optic) metric (number of bits electronically switched per second) totaled over all network nodes. Of late, it has become clear that electronic switching equipment cost is best counted in quantized units, e.g., in the number of transceiver interfaces at network nodes. In this paper, we consider the traffic grooming problem in unidirectional, WDM path networks with the goal of minimizing the number of transceivers. We conclusively show that the problem is NP-hard, even under the restriction of the egress traffic model. In the case of egress traffic, we give a simple heuristic that will never be worse than twice the optimal.","PeriodicalId":49154,"journal":{"name":"Journal of Optical Networking","volume":"8 1","pages":"454-461"},"PeriodicalIF":0.0,"publicationDate":"2009-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1364/JON.8.000454","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66593325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Scaling Ethernet speeds to 100 Gbits/s and beyond 将以太网速度扩展到100 gbit /s或更高

Journal of Optical Networking Pub Date : 2009-05-01 DOI: 10.1364/JON.8.000429

A. Wander, A. Varma, D. Perkins, V. Vusirikala

{"title":"Scaling Ethernet speeds to 100 Gbits/s and beyond","authors":"A. Wander, A. Varma, D. Perkins, V. Vusirikala","doi":"10.1364/JON.8.000429","DOIUrl":"https://doi.org/10.1364/JON.8.000429","url":null,"abstract":"Dramatic growth in Internet Protocol (IP) traffic demand is driving the need for new high-bandwidth IP interfaces. Today, router-to-router and router-to-transport system connections using Ethernet interfaces are limited to 10 Gbits/s (10GE) or slower. Although techniques, such as link aggregation, allow a limited degree of extensibility beyond 10 Gbits/s, they are limited in terms of scalability, introduce additional complexity, and reduce throughput efficiency. Discussion now centers on defining an Ethernet architecture that meets the needs of carriers and is conducive to implementation by the switch and server vendors. In this paper, we consider aggregation at the physical layer (APL) as a means to reuse existing 10GE physical layers (PHYs), while offering interface scalability to 100 Gbits/s and beyond. With APL, aggregation is performed at the PHY, whereby full Ethernet frames are transmitted across the aggregated PHYs in a parallel fashion. This ensures equal utilization of all links and allows aggregate bandwidth between nodes to scale with each new link added. We have demonstrated the applicability of such an approach by implementing a 100 Gbits/s interface using off-the-shelf components and running it over a live 4,000 km backbone network of a tier-1 Internet service provider.","PeriodicalId":49154,"journal":{"name":"Journal of Optical Networking","volume":"8 1","pages":"429-437"},"PeriodicalIF":0.0,"publicationDate":"2009-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1364/JON.8.000429","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66593123","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Optical routers: introduction to the feature issue 光路由器:介绍特性问题

Journal of Optical Networking Pub Date : 2009-05-01 DOI: 10.1364/JON.8.000505

K. Bergman, M. Glick, S. Yoo

引用次数: 0

60 GHz radio-over-fiber technologies for broadband wireless services [Invited] 用于宽带无线服务的60千兆赫光纤无线电技术[特邀]

Journal of Optical Networking Pub Date : 2009-05-01 DOI: 10.1364/JON.8.000471

A. Stohr, A. Akrout, R. Buss, B. Charbonnier, F. V. Dijk, A. Enard, S. Fedderwitz, D. Jäger, M. Huchard, F. Lecoche, J. Marti, R. Sambaraju, A. Steffan, A. Umbach, M. Weiss

引用次数: 101

Photonics in switching: enabling technologies and subsystem design 交换中的光子学:使能技术和子系统设计

Journal of Optical Networking Pub Date : 2009-05-01 DOI: 10.1364/JON.8.000404

K. Vlachos, C. Raffaelli, S. Aleksic, N. Andriolli, Dimitris Apostolopoulos, H. Avramopoulos, D. Erasme, D. Klonidis, M. Petersen, M. Scaffardi, K. Schulze, M. Spiropoulou, S. Sygletos, Ioannis Tomkos, C. Vázquez, O. Zouraraki, F. Neri

引用次数: 22

Radio-over-optical-fiber networks : Introduction to the feature issue 无线光纤网络:特性问题介绍

Journal of Optical Networking Pub Date : 2009-05-01 DOI: 10.1364/JON.8.000488

Jianjun Yu, G. Chang, A. Koonen, G. Ellinas

引用次数: 9

Survivable and traffic-oblivious routing in WDM networks: valiant load balancing versus tree routing WDM网络中的生存和流量无关路由:勇敢的负载均衡与树路由

Journal of Optical Networking Pub Date : 2009-05-01 DOI: 10.1364/JON.8.000438

Rui Dai, Lemin Li, Sheng Wang, Xiaoning Zhang

引用次数: 7

Effect of traffic patterns on automatic polarization control with polarization and time-division multiplexed optical packet transmission 业务模式对偏振与时分复用光分组传输自动偏振控制的影响

Journal of Optical Networking Pub Date : 2009-05-01 DOI: 10.1364/JON.8.000393

V. Tuft, S. Bjornstad, D. Hjelme