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WDM (WavelengthDivisionMultiplexing ,波分复用 )系统的应用使得大容量的业务日益集中于同一系统内 ,这同时提高了对网络自愈性能的要求 ,从而导致各种自愈技术的发展。因为光器件具有高速交换的优点 ,因而从光层对业务恢复具有极大的优越性。文中主要分析了几种典型的光层的自愈方法
The application of the WDM (Wavelength Division Multiplexing) system enables the large-capacity services to be increasingly concentrated in the same system, which simultaneously improves the requirements for network self-healing performance and leads to the development of various self-healing technologies. Because optical devices have the advantages of high-speed switching, optical recovery from the business has great advantages. The paper mainly analyzes several typical self-healing methods of optical layers