Patent ID: 8045851

Claim:
An automatic restoration method of optical communication system, comprising: after a link fails in an optical communication system, centering a failure state by a first automatic restoration launching station adjacent to the failed link; sending, by the first automatic restoration launching station, an automatic restoration detection message whose optical power is compatible with a safety standard to a second automatic restoration launching station at the opposite side of the failed link; in response to receiving an automatic restoration request message from the second automatic restoration launching station, determining, by the first automatic restoration launching station, the link has been repaired in two directions between the first automatic restoration launching station and the second automatic restoration launching station; sending an automatic restoration confirmation message whose optical power is compatible with a safety standard to the second automatic restoration launching station; and switching to a normal working state by the first automatic restoration launching station; wherein the sending one of the automatic restoration detection message, and the automatic restoration confirmation message comprises: turning on, by the first automatic restoration launching station, a main optical channel to the second automatic restoration launching station; loading an identification signal representing one of the automatic restoration detection message, and the automatic restoration confirmation message on the main optical channel; and adjusting the main optical channel power to be compatible with the safety standard.