The concepts of wavelength division multiplexed all optical fiber networks ( WDM AONs ), the topology, wavelength routing, optical cross ( OXC ) and the future trend of WDM AONs are analyzed in this paper. 本文综述了波分复用全光通信光纤网的基本概念、网络拓朴结构、波长路由、光学交叉连接和全光网的发展趋势。