WAVELENGTH-DIVISION MULTIPLEXING OPTICAL COMMUNICATION SYSTEM AND METHOD FOR MEASURING OPTICAL PERFORMANCE OF AN OUTPUT SIGNAL FOR THE SYSTEM

摘要

Disclosed are a wavelength-division multiplexing optical communication system and a method for measuring optical performance of an output signal for the system. The optical communication system according to one embodiment comprises: a service-provider device; alocal node; and a plurality of subscriber devices. The service-provider device comprises: a plurality of first optical transceivers; a first optical multiplexer/demultiplexer (OD/OM) connected to the plurality of first optical transceivers so as to multiplex/demultiplex the light transceived by the plurality of first optical transceivers; and a seed-light source providing seed light. Each of the plurality of subscriber devices comprises a second optical transceiver. The local node connects the service-provider device and the plurality of subscriber devices to each other using aDWDM link comprising: a second multiplexer/demultiplexer (OD/OM); and a single-mode optical fiber for transmission. Here, the optical intensity of an output signal of the second optical transceiver is determined by compensating for the value of the loss caused when the output signal passes through the second optical multiplexer/demultiplexer of the local node.