Therefore,WDM is still headi ng to larger capac ity. Technically,CWDM offers same principle as DWDM,the di fference be tween them lies in the cost,in case of same capacity,CWDM is chea p er than DWDM.

• 粗波分复用(CWDM)与密集波分复用(DWDM)在技术上具有相同的原理,而主要特征是在容量相同时前者成本比后者低。