WDM中一种基于动态RWA算法的改进

随着掺铒光纤放大器（EDFA）的出现及其迅速商用化的发展，使得波分复用（WDM）技术日益成熟，而路由和波长分配（RWA）问题是WDM网络中的一个重要问题。通过对RWA基本问题的探讨，对EDFA出现的增益饱和现象的分析，找到了FAR算法中所存在的弊端并进行了改进。在文中所提出的新算法中，主要是根据光纤到光纤链路中输入EDFA光信号功率的基础上寻找备选路由，此种算法能够大大降低WDM传输网中的阻塞率。

An improvement of algorithm based on dynamic RWA in WDM

With the coming forth and commercial using of EDFA,it made the development of WDM technology.In the optical network of WDM,the issue of RWA is very important.This paper discussed the basic question of RWA and analyzed the gain saturation of EDFA,finding the defects of FAR algorithm and made improve on it.The new algorithm in this paper considered the power of signal in which will be puted into EDFA in the optical link,then introduced the method of finding standby routing,which will be reduce the rate of block in optical network of WDM.