Patent ID: 6236777
Filing Date: 2001-05-22
Classification: H04B

Abstract:
An improved optical communication system comprising:a first optical fiber line having a first end and a second end;a second optical fiber line having a first end and a second end;a first transmitter for transmitting a signal in the first optical line;a second transmitter for transmitting a signal in the second optical line;at least one two-stage amplifier in each of said first and second lines;a first receiver connected to one of the first and second ends of the first optical fiber line for receiving the signal from the first optical line;a second receiver connected to one of the first and second ends of the second optical fiber line for receiving the signal from the second optical line; anda pair of laser pumps coupled to form a single system that provides a first pumping signal to at least one stage of said at least one amplifier in said first optical fiber line and to at least one stage of said at least one amplifier in said second optical fiber line.