It is becoming the pillar of optic fiber communication and a key technology in the field of AON.In AON,transmission and processing of the data are carried on in optical field.

• 全光网络是指对信号的传输与处理等均在光域中进行，全光网络与目前传统的通信网络相比容量更大、可扩充性和可重构性更强、网络结构更简单、对数据完全“透明”。