Output saturation characteristics of erbium-doped fiber amplifiers pumped at 975 nm

Abstract

We report the signal saturation behavior of an erbium-doped fiber amplifier pumped at 975 nm. We have characterized the output saturation powers as a function of fiber length and observed that the output saturation powers peak at an optimum length close to the optimum length for small signal gain. The output saturation power is found to be higher at a signal wavelength of 1.555 μm than at 1.532 μm.