Patent ID: 6292288
Filing Date: 2001-09-18
Classification: H01S,H04B

Abstract:
A Raman amplifier system comprising:an optical fiber configured to have a wavelength division multiplex, WDM, optical signal, with a signal bandwidth of at least 20 nm, propagate therethough;a pump configured to pump light into said optical fiber and Raman-amplify with said pump light said WDM optical signal; and an optical coupler that optically interconnects said optical fiber with said pump and is configured to couple said pump light into said optical fiber whereinsaid pump includes a plurality of semiconductor lasers, each producing light having a different central wavelength, andrespective wavelength intervals between said different central wavelengths being in an inclusive range of 6 nm through 35 nm, whereinan interval between adjacent central wavelengths of a first and a second of said semiconductor lasers being different than an interval between adjacent central wavelengths of said second and a third of said semiconductor lasers.