磁光四波混频实验平台

Experimental Platform for Magneto-Optical Four Wave Mixing

设计一个测量光纤磁光(MO)效应和四波混频(FWM)的实验平台,具有较好的偏振控制性能,可分别采用自制的电磁偏振控制器(EMPC)和载纤螺绕环磁控装置控制输入光信号的偏振态(SOPs)和非线性光纤磁光耦合系数。实验测量了光纤四波混频闲频光功率对输入信号光偏振态椭圆率的依赖曲线,结果与理论分析一致。在此基础上,开展了连续导波光的磁光四波混频实验,测量了外加磁场对光纤四波混频闲频光功率的影响。

An experimental platform of good polarization control performance is designed for the fiber magneto- optical （MO） effect and four wave mixing （FWM）, in which the states of polarization （SOPs） of input optical signal and the MO coupling coefficient of nonlinear fibers are respectively controlled by a self-made electromagnetic polarization controller （EMPC） and a fiber-embedded toroidal coil. The dependency of fiber FWM idler power on the SOP ellipticity of input signal is measured and the experimental data are consistent with the theoretical results. And then, the MO-FWM experiment is implemented and the variation of fiber FWM idler power with the applied magnetic field is obtained.