光分组交换网络技术展望  

Advances in photonic packet switching systems

作　　者：谢世钟[1] 陈明华[1] 董毅[1] 陈向飞[1] 李栩辉[1] 王国忠[1] 

机构地区：[1]清华大学电子工程系,北京100084

出　　处：《清华大学学报（自然科学版）》2002年第7期855-859,共5页Journal of Tsinghua University(Science and Technology)

基　　金：国家自然科学基金重大研究计划项目 (90 10 40 0 3 )

摘　　要：综述了当前光网络向高速大容量、智能化和向分组交换转变的发展趋势。介绍了在光域上直接实现数据包的传送、路由、波长变换、存贮和转发的光分组交换技术的优点和目前能够实现光分组交换的几种解决方案 ,包括光突发交换、光标记交换和全光时分复用交换等。光分组交换的核心是光信号处理技术。由于当前缺乏光子存储器和光子集成芯片 ,该技术还处于探索阶段 ,有待光子学新概念和新器件的突破。因此 。This paper overviews the research and development trends of optical networks moving to high capacity, intelligent and packet switching. The advantage of optical packet switching is that by dividing the information into packets, it can fully utilize the bandwidth statistically by sharing a wavelength pass and obtains high capacity with higher efficiency and flexibility. The core technologies of optical packet switching are the transferring, routing, wavelength converting, buffering and forwarding of optical packets. A few approaches to realize these technologies are briefly introduced including optical burst switching, optical label switching and all optical time division multiplexing switching. The implementation of optical packet switching is difficult at present, and mainly is limited by the need for optical memory and photonic integrated circuits with optical logic functions. For this reason, creative new concepts and novel photonic devices are crucial issues for the research work and commercialization of optical packet switched networks.

关 键 词：光分组交换网络 光信息处理技术 分组化 智能化 全光网 光纤通信 

分 类 号：TN915.63[电子电信—通信与信息系统] TN929.11[电子电信—信息与通信工程]