APPARATUS AND METHOD FOR OPTICAL TIME-DOMAIN REFLECTOMETER USING DUAL WAVELENGTH LIGHT SOURCE

摘要

It relates to a light path monitoring device using a dual light source, and according to an embodiment, the monitoring device includes a first light source and a second light source that output light of different wavelengths, and drives the first light source and the second light source to An optical receiver including an optical transmitter for propagating a first monitoring light and a second monitoring light to an optical line, and a first light receiving module and a second light receiving module for receiving the first reflected light and the second reflected light reflected from the optical line; may include