Patent ID: 6384963
Filing Date: 2002-05-07
Classification: H01S,H04B

Abstract:
An article comprising an optical fiber Raman amplifier comprisingan input port responsive to an optical signal to be amplified; an output port for providing an exit path from said Raman amplifier for an amplified optical signal; an optical fiber path for support Raman gain disposed between said input port and said output port; and a Raman pump source coupled to said input port with said optical signal to be amplified, said Raman pump source including at least one pump laser for providing an optical pump to co-propagate with said optical signal through said optical fiber path, said Raman pump source exhibiting a relatively high output power, relatively large spectral width, a frequency difference between all longitudinal modes of each pump laser being separated by at least the walk-off frequency between the pump laser frequency and the signal frequency, and all intense longitudinal modes between different pump lasers, if there is more than one pump laser, being separated by at least the electrical bandwidth of the communication system.