APPARATUS FOR OPTICAL COMMUNICATION, PROTECTION SWITCHING METHOD OF THE SAME

摘要

An optical communication apparatus is mounted to a first node among a plurality of nodes in a linear multicast network where the nodes are connected to each other linearly. The optical communication apparatus includes: a first extraction passage module which extracts at least a portion of a first operating signal, and passes a signal to retransmit in the first operating signal; a second extraction passage module which extracts at least a portion of an inputted first preliminary signal, and passes a signal to retransmit in the first preliminary signal; and a first optical switch which selects one of the first and second extraction passage modules, and outputs a signal extracted by the selected extraction passage module, wherein the first operating signal and the first preliminary signal are signals that are separated and transmitted from a second node adjacent to the first node.