All optical wavelength converter and its application in optical network

All optical network （AON） is a hot topic in recent studies of optical fiber communications. Key techniques in AON include optical switching/routing, optical cross connection （OXC）, all optical wavelength conversion （AOWC）, all optical buffering, etc. Opti- cal switching/routing is in fact wavelength switching/ routing. OXC and wavelength conversion （WC） are introduced into cross nodes so that a virtual wavelength path is established. With WC, communication route is formed only if there is unused wavelength in an individual segment link. The rate wavelength usage is thus greatly increased. The blocking rate of network can be reduced by adding WCs, especially for huge capacity multiple nodes ones. Therefore, WC has attracted much attention in basic research of optical communication and is used in some experimental networks.This dissertation studies all optic wavelength conversion and its application, with the contributions in the following five aspects.

基于ASON技术的三峡通信光环网改造

ASON是一种具有灵活性、可扩展性的能直接在光层上按需提供服务的光网络,是一种标准化的智能光传送网,被广泛地认为是下一代光网络的主流技术。文章通过分析三峡光环网的现状和目前存在的问题;对ASON的总体结构、控制平面的组成以及呼叫控制和连接控制的功能的实现进行了阐述;并对基于ASON技术的三峡光环网改造规划方案及配置进行了分析,为以后的通信光传送网设计思路上提供相应的借鉴经验。