公开(公告)号：US10389441B2

公开(公告)日：2019-08-20

申请号：US15811029

申请日：2017-11-13

Applicant: SOLiD, INC.

Inventor： Chiyoung Park

IPC: H04J14/02 ,  H04B10/079 ,  H04B10/2575

Abstract: There is provided an optical signal monitoring device and an optical signal monitoring system of a wavelength division multiplexing based network including: an input unit configured to receive each of downlink signals and uplink signals; a wavelength division multiplexing filter configured to separate the downlink signals and the uplink signals by wavelength; an optical power measurement module configured to measure optical power of each signal separated by wavelength; and a controller configured to determine whether an optical signal is abnormal based on optical power information measured by the optical power measurement module.