一种全光波长路由器的设计及性能分析研究  

Design and Performance Analysis of an All-Optics Wavelength Router

作　　者：杨春勇[1] 王文珍[1] 刘德明[2] 何军[3] 

机构地区：[1]中南民族大学电子信息工程学院,武汉430074 [2]华中科技大学光电子科学与工程学院,武汉430074 [3]弗吉尼亚大学电气与计算机工程系,夏落茨维尔市美国弗吉尼亚州22911

出　　处：《电子与信息学报》2008年第2期455-458,共4页Journal of Electronics & Information Technology

基　　金：武汉市科技攻关计划(2002100513004);中南民族大学自然科学基金(Y22050091)

摘　　要：该文基于一种简单低成本的、波长转换节点共享型全光波长路由器结构,设计了以排队理论为基础的M/M/T/T模型,研究了波长路由器在波分复用波长路由网络中的阻塞特性。数值结果表明,全光网波长路由器的阻塞特性与复用波长数目,链路波长利用率,节点接入光纤端口数,有无波长转换器密切相关。尤其在受限波长转换条件下的配置优化分析,可看出波长路由器无需可调谐器件,也能获得灵活的波长转换能力,不但可避免波长路由器因为精确调谐所开销的时间,而且所有的控制均为简单的开关控制,可降低工程实现的复杂度。Based on the theory of queue, a blocking probability model M/M/T/T is presented for a simple and cost-effective architecture of all optical wavelength router to investigate the blocking probability of the wavelength router in WDM wavelength routed all-optical network. It is found that the blocking probability is relevant to the number of wavelength per link and the number of access fiber link ports, and with or without wavelength conversion. Especially, more attention is paid to the blocking performance of the router with limited wavelength convertible capability. And it is seen by the numerical computing that low conversion degree of the wavelength converter is more realistic to construct a wavelength router system with accurately tunable devices not used, not only switching time is to be minished, but also the complexity of carrying out in engineering is reduced.

关 键 词：波分复用 光交换 波长转换 波长路由器 

分 类 号：TN929.11[电子电信—通信与信息系统]