Adaptive polarization adjusting device for controlling the polarization of light input to the polarization-maintaining waveguide component

摘要

The non-linear double refraction guided wave road, is used for four light wave mixtures, wave length conversion and Raman expansion etc. In order to adjust the polarized wave of input light to this kind of guided wave road 14, it can provide polarized wave bimusupuritsuta. Polarized wave bimusupuritsuta diverges one of the cross polarization which through is not wanted doing. Power of the light which diverges is detected with photodiode 13. The detection signal of photodiode 13 is fed back to polarized wave control control equipment 10. In order the polarized wave of input light, for power of the light which is detected with photodiode 13 to become smallest, it controls polarized wave control control equipment 10. Selective figure Figure 3