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介绍了全光网 ＷＤＭ技术的基本概念和其具有的大容量、可升级性好的优越性；阐述了网络节点、管理方案以及网络自愈等方面的技术。全光网络对传统网络的升级主要体现为网络节点从电交换技术到光交换技术的升级，由此引发了网络管理及其相关技术的变化。
The basic concept of all optical network WDM technology and its advantages of large capacity and scalability are introduced. The technologies of network nodes, management schemes and network self-healing are also described. All-optical network to upgrade the traditional network mainly reflects the network node from the electrical switching technology to the optical switching technology upgrade, which led to the network management and related technology changes.