Patent ID: 11914191
Assignee: NEC CORPORATION
Field: Telecommunications (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 15:
16. A tangible and non-transitory recording medium for a program for causing a computer of an optical branching/coupling device to execute:
a procedure of outputting, to a first line, a third optical signal acquired by multiplexing a first optical signal received from the first line with a second optical signal to be inserted into the first line;
a procedure of receiving, from a second line different from the first line, a sixth optical signal acquired by wavelength-multiplexing a fourth optical signal with a fifth optical signal to be dropped from the second line;
a procedure of demultiplexing the fourth optical signal and the fifth optical signal; and
a procedure of outputting, to the second line, a seventh optical signal acquired by multiplexing the fourth optical signal with the first optical signal.