CHANNEL EXPRESS/ADD OPTICAL MODULE AND CHANNEL EXPRESS/ADD METHOD IN OPTICAL ADD/DROP MULTIPLEXER NODE USING THE SAME

摘要

Provided are a channel express/add optical module and a method of channel express/add in an optical add/drop multiplexer node using the channel express/add optical module. The channel express/add optical module comprises: a multiplexer/demultiplexer which demultiplexes a multiplexed optical signal having a plurality of wavelengths into individual wavelength optical signals or multiplexes a plurality of different wavelength optical signals; a plurality of 1×2 switches each of which includes a first output end that guides the demultiplexed different wavelength optical signals to output them thereto and a second output end through which new wavelength optical signals; and a plurality of reflectors each of which reflects the optical signal output to the first output end so that the optical signal is feedback to the multiplexer/demultiplexer via the 1×2 switches. The channel express/add optical module and the method of channel express/add in an OADM using this optical module are applied to a reconfigurable optical add/drop multiplexer system, and can express/add multiplexed channels in a node using a simple structure.