Comparison of Node Architectures for Elastic Optical Networks with Waveband Conversion  

弹性光网络中具有波带变换功能的节点结构比较(英文)

作　　者：张平 李巨浩 郭秉礼 何永琪 陈章渊 邬贺铨 

机构地区：[1]State Key Laboratory of Advanced Optical Communication Systems and Networks,Peking University [2]Chinese Academy of Engineering(CAE)

出　　处：《China Communications》2013年第8期77-87,共11页中国通信（英文版）

基　　金：supported by the National Key Basic Research Program of China (973 Program) under Grants No. 2010CB328201,No.2010CB328202;the National Natural Science Foundation of China under Grants No. 60907030,No. 61275071,No. 60736003,No. 60931160439;the National High Technical Research and Development Program of China (863 Program)under Grant No. 2011AA01A106

摘　　要：In Elastic Optical Networks(EONs)with flexible bandwidth allocation,the blocking probability is high because of spectral contention.Similar to the functionality of wavelength conversion in Wavelength-Division-Multiplexing(WDM)networks,waveband conversion has been proposed to solve spectral contention in EONs.In this paper,we discuss the design of node architectures for an EON with waveband conversion.Four node architectures with shared Tuneable Waveband Converters(TWBCs)are proposed,and their blocking performances are evaluated by simulation.Simulation results show that the blocking probability of a node is significantly improved by waveband conversion.The sharing efficiency of waveband converters is also investigated.Simulation results show that at the same blocking rate,the node architecture with converters shared per node can save more than 20% waveband converters compared with that of the one with converters shared per link.In Elastic Optical Networks（EONs）with flexible bandwidth allocation,the blocking probability is high because of spectral contention.Similar to the functionality of wavelength conversion in Wavelength-Division-Multiplexing（WDM）networks,waveband conversion has been proposed to solve spectral contention in EONs.In this paper,we discuss the design of node architectures for an EON with waveband conversion.Four node architectures with shared Tuneable Waveband Converters（TWBCs）are proposed,and their blocking performances are evaluated by simulation.Simulation results show that the blocking probability of a node is significantly improved by waveband conversion.The sharing efficiency of waveband converters is also investigated.Simulation results show that at the same blocking rate,the node architecture with converters shared per node can save more than 20% waveband converters compared with that of the one with converters shared per link.

关 键 词：EON TWBC node architecture blocking probability 

分 类 号：TN929.1[电子电信—通信与信息系统]