Station-side device migration method, station-side device, station-side device transmission control method, and optical communication system

摘要

A method for migrating an optical network unit for an optical communication system includes the steps of: configuring an optical network unit so that a receiving unit can receive an upstream signal having a wavelength included in a first wavelength band; A downlink signal can be transmitted using at least one wavelength included in a second wavelength band overlapping at least a part of the signal, an uplink signal can be received by a receiver, and reflected return light of the downlink signal is received. Configuring the optical line terminal so as to be able to be attenuated by the wavelength filter in the preceding stage of the unit.