Optical wavelength division multiplexing device for communication network, has external coupling paths with optical processing unit that permits and prohibits transfer of optical resources between two multiplexer/demultiplexer units

摘要

The device has external coupling paths connecting inlets/outlets of two multiplexer/demultiplexer units (M1, M2), and including an optical processing unit that permits and prohibits transfer of optical resources between the two units (M1, M2). Two external multiplexing/demultiplexing paths are connected to upstream fiber (F1)/down stream fiber (F2)and to respective inlet/outlets of the units (M1, M2).