Patent ID: 11936431
Assignee: NEC CORPORATION
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 12:
13. An optical communication system comprising an optical transmission apparatus and first to third optical reception apparatuses, wherein:
the optical transmission apparatus comprises:
a signal processor configured to convert a first data stream into a first electrical signal and a second electrical signal in a first case;
a first optical transmitter configured to convert the first electrical signal into a first optical signal in the first case;
a second optical transmitter configured to convert the second electrical signal into a second optical signal in the first case; and
an output interface configured to output the first optical signal and the second optical signal to the first optical reception apparatus in the first case,
wherein:
the signal processor converts a second data stream into a third electrical signal and converts a third data stream into a fourth electrical signal in a second case which is different in time from the first case;
the first optical transmitter converts the third electrical signal into a third optical signal in the second case;
the second optical transmitter converts the fourth electrical signal into a fourth optical signal in the second case; and
the output interface outputs the third optical signal to the second optical reception apparatus and outputs the fourth optical signal to the third optical reception apparatus in the second case.