Opt Lett. 2013 Dec 15;38(24):5361-4. doi: 10.1364/OL.38.005361.
We experimentally study the dynamics of the generation of multiple sidebands by means of a quasi-phase-matched four-wave mixing (FWM) process occurring in a dispersion-oscillating, highly nonlinear optical fiber. The fiber under test is pumped by a ns microchip laser operating in the normal average group-velocity dispersion regime and in the telecom C band. We reveal that the growth of higher-order sidebands is strongly influenced by the competition with cascade FWM between the pump and the first-order quasi-phase matched sidebands. The properties of these competing FWM processes are substantially affected when a partially coherent pump source is used, leading to a drastic reduction of the average power needed for sideband generation.
我们通过在色散振荡、高度非线性光纤中发生的准相位匹配四波混频（FWM）过程实验研究了多边带产生的动力学。测试光纤由在正常平均群速度色散区和电信 C 波段工作的 ns 微芯片激光器泵浦。我们揭示了高阶边带的增长受到泵浦和一阶准相位匹配边带之间的级联 FWM 竞争的强烈影响。当使用部分相干泵浦源时，这些竞争的 FWM 过程的特性会受到很大影响，从而导致边带产生所需的平均功率大大降低。
