APPARATUS AND METHOD FOR PROTECTION SWITCHING OF OPTICAL CHANNEL

摘要

An apparatus for protection switching of an optical channel and a method thereof are provided to transfer signals more stably even in a complicated optical network by selecting only two output paths in a node having at least two or more optical fiber input/output terminals to transmit the signals. An apparatus for protection switching of an optical channel comprises a branching unit(500), an output switching unit(510), a plurality of optical transponders(520-1_520-n), and an input switching unit(530). The branching unit receives an electric signal and then branches the signal into the same plural electric signal as the received electric signal. The output switching unit selects output paths of the branched electric signal according to an optical channel path control command of an optical network. The optical transponders are equipped on the output paths of the electric signals. The input switching unit receives the optical signals of the same wavelength from two optical transponders equipped in a previously established operation path a protection path.