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由于目前数字交叉连接设备（ＤＣＳ）结构和交叉连接技术的限制，传统的基于ＤＣＳ的自愈网（ＳＨＮ）技术不能达到２ｓ的业务恢复目标。提出了一种新的应用无源光开关的自愈网（ＳＨＮＯＳ）结构和恢复策略，业务恢复是在光范畴内利用光纤代替传统的数字通道来实现的，而控制部分由目前的电方式的ＤＣＳ系统完成。网络模拟表明，ＳＨＮＯＳ可以在２ｓ内完成网络自愈过程。
Due to the current limitations of digital cross-connect equipment (DCS) architecture and cross-connect technology, the traditional DCS-based self-healing network (SHN) technology can not achieve the 2s service recovery goal. A new self-healing network (SHN-OS) structure and recovery strategy using passive optical switches is proposed. Service recovery is achieved by using optical fibers instead of the traditional digital channels in the optical domain. The control part is implemented by the current electricity The way the DCS system is completed. Network simulation shows that SHNOS can complete the network self-healing process within 2s.