H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 10/17 (2006.01)
Patent
CA 2410257
A system and method are provided for amplifying an optical signal in an optical communications system where spans between amplifiers may vary. The system includes a Raman amplifier variable gain portion and an EDFA gain portion. The amount of Raman amplifier gain is chosen to trade off accumulation of noise with accumulation of multi-path interference. This variable Raman gain is used to equalize the loss of each span so that the amount of option power supplied at the input of the EDFA gain portion is substantially constant throughout the system.
Golovchenko Ekaterina
Nagel Jonathan
Nissov Morten
Pilipetskii Alexei N.
Ten Sergey
Kirby Eades Gale Baker
Tyco Electronics Subsea Communications Llc
Tyco Telecommunications (us) Inc.
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