Patent ID: 6693737
Filing Date: 2004-02-17
Classification: H01S,H04B

Abstract:
A broadband fiber transmission system, comprising:a transmission line comprising at least one zero dispersion wavelength &lgr;o and transmitting an optical signal comprising a wavelength &lgr;, the transmission line comprising a Raman amplifier that amplifies the optical signal through Raman gain, at least a portion of the transmission line comprises a magnitude of dispersion at the wavelength &lgr; between 10 ps/nm-km and 50 ps/nm-kin; and one or more semiconductor lasers operated at wavelengths &lgr;p for generating a pump light to pump the Raman amplifier, wherein the wavelength &lgr; is within thirty (30) nanometers of the at least one zero dispersion wavelength &lgr;0 and wherein the at least one zero dispersion wavelength &lgr;0 is less than 1540 nm or greater than 1560 nm.