WDM光网络中分级功率均衡方案

Two-level Power Equalization Scheme in WDM Optical Networks

提出了一种新的分级光功率均衡的方法以及节点隔离原则 ,分析了该方法对系统接收机Q值的影响。结果表明 ,当复用段光功率水平整体波动时 ,选择合适的复用段级均衡实现方式 ,可以维持与仅用通道级均衡基本相同的性能 ,同时简化了调节过程 。

A novel method—two level power equalization scheme is put forward and the corresponding OXC/OADM node structure is also presented. The effect of this method is analysed and the Q value of receiver according this method is calculated. Simulation result shows that the method can not only equalize the difference of individual optical channel, but also maintain the same performance when the overall optical power fluctuates. It simplifies the procedure of equalization and lowers the requirement of power equalization unit of optical channel level.