Impact of Input Pump Profile on the Gain Spectrum and the Saturation Behavior of One-Pump Fiber Optical Parametric Amplifiers

In this article, the impact of input pump profile on the gain spectrum as well as the saturation behavior of one-pump fiber optical parametric amplifiers (fopas) is investigated. since in practical circumstances, pump sources used for fopas have lorentz-gaussian profile instead of gaussian, a more realistic case is considered for simulating fopas in this article. the results of simulations for the gaussian and the lorentz-gaussian profiles show that a higher gain and a faster saturation are obtained for a pump with a lorentz-gaussian profile than a gaussian pump. the results of this article provide a more realistic model for fopas.