提出了一种将相位延迟器复合为旋光器的技术,利用米勒矩阵对其原理与应用进行了分析。相位延迟器复合为旋光器时,将相位延迟器置于两块1/4波片之间,使两块1/4波片的快轴相互垂直且与相位延迟器的快轴分别成±45°角。利用相位延迟器复合为旋光器技术,可以将相位调制器转换为偏振方向调制器。实验验证了相位延迟器复合为旋光器和相位调制器转换为偏振方向调制器的可行性。

A technique for forming a rotator by retarders is presented. The principle to form the rotator and its application are analyzed with Mueller matrix. When a retarder is placed between two quarter-wave plates whose fast axes are perpendicular to each other and the angles between fast axes of the retarder and the two quarter-wave plates are ±45° respectively, the rotator is formed. Based on the technique, a phase modulator can be applied for the modulation of polarization direction. In the experiments, principle of forming the rotator and application of the phase modulator to modulation of polarization direction are verified.