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Rapid fault identification and localization in optical networks are crucial due to high data rates. These problems are more challenging than in traditional electronic networks because of optical transparency. In a transparent optical network which does not regenerate optical signals, a fault may propagate to various parts of the network from the origin, and multiple alarms can be generated for a single failure. In order to reduce the number of redundant alarms, simplify fault localization, anddoi:10.1109/broadnets.2007.4550519 dblp:conf/broadnets/StanicSCSC07 fatcat:vyjiknsr2jfg7kt7ysv6br2zcq