Patent ID: 11949448
Assignee: NEC CORPORATION
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A submarine optical communication system comprising:
a first terminal station; and a second terminal station being connected to the first terminal station via a submarine cable, wherein
the submarine cable configured to accommodate a first transmission line, a second transmission line, and a third transmission line that enable light to propagate,
the first terminal station includes:
a first monitor configured to monitor first signal quality of dummy light that is acquired from the second terminal station via the first transmission line;
a first dummy light source configured to output dummy light to the second terminal station via the second transmission line; and
a light transmitter configured to transmit an optical signal to the second terminal station via the third transmission line, the optical signal including the first signal quality of dummy light from the second terminal station, and

the second terminal station includes:
a second dummy light source configured to output dummy light to the first monitor via the first transmission line;
a second monitor configured to monitor second signal quality of dummy light that is acquired from the first dummy light source via the second transmission line; and
a light receiver configured to receive the optical signal including the first signal quality from the third transmission line.