US 11,728,920 B2
Optical communication system and method of monitoring thereof
Chi Young Park, Siheung-si (KR); Gil Koog Kim, Seoul (KR); and Bum Soo Park, Seongnam-si (KR)
Assigned to SOLiD, INC., Seongnam-si (KR)
Filed by SOLiD, INC., Seongnam-si (KR)
Filed on Jul. 20, 2022, as Appl. No. 17/869,058.
Application 17/869,058 is a continuation of application No. 17/097,621, filed on Nov. 13, 2020, granted, now 11,418,277.
Claims priority of application No. 10-2019-0146498 (KR), filed on Nov. 15, 2019; and application No. 10-2020-0152297 (KR), filed on Nov. 13, 2020.
Prior Publication US 2022/0360357 A1, Nov. 10, 2022
Int. Cl. H04J 14/02 (2006.01)
CPC H04J 14/0271 (2013.01) [H04J 14/0272 (2013.01); H04J 14/0283 (2013.01)] 6 Claims
OG exemplary drawing
 
1. An optical communication device of an optical ring network, the optical communication device comprising:
a first optical signal-processor configured to output a first optical signal having a first wavelength;
a first multiplexer/demultiplexer (MUX/DEMUX) configured to output the first optical signal in a first direction, and receiving and outputting a first reflected signal which is a reflected signal of the first optical signal;
a second optical signal-processor configured to output a second optical signal of a second wavelength;
a second MUX/DEMUX configured to output the second optical signal in a second direction opposite to the first direction, and receiving and outputting a second reflected signal which is a reflected signal of the second optical signal; and
a controller configured to analyze a connection state of a first remote optical communication device to which the first and second optical signals are allocated, based on the first and second reflected signals.