通过在偏振相关型消偏器输入端增加一个1/4波片，消除了器件对入射线偏振光振动方向的相关性，实验中对半峰全宽度为0.13nm的激光消偏，消偏光偏振度小于2.6%。

• Adding a quarter waveplate before the entrance of polarization-dependent depolarizer, the dependence on the direction of vibration of incident linearly polarized light is effectively reduced. The DOP of output light is 2.6%25 when depolarizing a laser diode with FWHM of 0.13nm.