Optical signal transceiving network terminal device having single optical switch for bypass function and optical network ethernet system including the same with single optical fiber line

摘要

An optical signal transmission / reception network terminal device having a bypass function by itself in the event of a failure is disclosed. The optical signal transmitting / receiving network terminal apparatus includes an optical switch unit performing at least a 2x2 optical switching function as a single switch in a normal operation and bypass switching in response to a failure occurrence control signal. Also, the optical signal transmitting / receiving network terminal apparatus may further include: a transceiver unit that receives an optical signal received through the optical switch unit and transmits a transmission optical signal through the optical switch unit; a failure detection unit that detects occurrence of a failure of the transceiver unit; And a controller for controlling the transceiver unit and applying the fault occurrence control signal to the optical switch unit when a fault detection signal is generated from the fault detection unit.