Inoue K, Mukai T
Opt Lett. 2001 Jan 1;26(1):10-2. doi: 10.1364/ol.26.000010.
Signal gain-saturation characteristics in a fiber optical parametric amplifier are described. Experiments and calculations for the high-gain-saturation region are presented in which the direction of optical power transfer, which is from the pump to the signal and the idler in the unsaturated region, becomes reversed at high-signal-input powers. It is shown that the signal gain soon saturates for signal wavelengths far from the pump. This wavelength dependence is explained by the power-dependent phase mismatch and its behavior in the high-signal-input region.
描述了光纤光学参量放大器中的信号增益-饱和特性。给出了高增益饱和区域的实验和计算结果，在不饱和区域中光功率从泵浦传输到信号光和闲频光，而在高信号输入功率时这种传输方向会反转。结果表明，对于远离泵浦的信号波长，信号增益很快就会饱和。这种波长依赖性可以通过与功率相关的相位失配及其在高信号输入区域的行为来解释。
