Patent ID: 6384962
Filing Date: 2002-05-07
Classification: H01S,H04B

Abstract:
An optical system to perform automatic gain equalization, comprising:a first amplifier to amplify an optical signal to produce a first gain curve having a first gain maxima and a first gain minima of a first period; a first set of amplifier pumps providing optical pump signals to said first amplifier; a second amplifier to amplify said optical signal to produce a second gain curve with a second gain maxima and a second gain minima of a second period, with said second gain maxima substantially coinciding with said first gain minima; a second set of amplifier pumps providing optical pump signals to said second amplifier, wherein said first and second gain curves form a third gain curve having a third gain maxima and a third gain minima of a third period; a third amplifier to amplify said optical signal to produce a fourth gain curve with a fourth gain maxima and a fourth gain minima of a fourth period, with said fourth gain maxima substantially coinciding with said third minima, and a third set of amplifier pumps providing optical signals to said third amplifier, wherein said pumps of said first amplifier operate at a first set of wavelengths, said pumps of said second amplifier operate at a second set of wavelengths, and said pumps of said third amplifier operate at a third set of wavelengths.