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本文针对原有光纤循环延迟线单模光纤偏振控制系统存在的技术和理论问题，提出了改进方案．技术上引入了旋转挤压器，理论上引入了反向旋转矩阵．理论和实验结果都证实了新方案的合理性．
In this paper, aiming at the existing technical and theoretical problems of single-mode optical fiber polarization control system of optical fiber cyclical delay line, an improved scheme is proposed. Technically introduced a rotary extruder, the theoretical introduction of the inverse rotation matrix. Both theoretical and experimental results confirm the rationality of the new scheme.