We designed and demonstrated experimentally a silicon photonics integrated dynamic polarization controller. The overall size of the dynamic polarization controller on chip is 2.830mm×0.210mm×1mm. The modulation bandwidth is 30 kHz. By using a variable step simulated annealing approach, we achieve a dynamic polarization extinction ratio greater than 25 dB. A numerical simulation method was used to optimize the relevant parameters of the dynamic polarization controller. It is expected that the dynamic polarization controller can be utilized in fiber communication systems or silicon photonics integrated quantum communication systems to minimize the size and decrease the cost further.

研究了一种基于法布里-珀罗标准具多光束干涉成像的微小角度测量方法。通过计算同心干涉圆环圆心位置变化量（圆心位移量）和成像物镜焦距，实现反射镜微小偏转角度的测量。采用相对测量原理，构建了基于圆心位移量不确定度分量和成像物镜焦距不确定度分量的微小角度测量不确定度评定模型。选取2 mm间隔的F-P标准具进行微小角度的测量实验研究，并进行了数据处理。实验结果表明，在600″微小角度测量范围内，测量不确定度不大于0.132″；在40″微小角度测量范围内，测量不确定度不大于0.045″。该方法可为具有自校准特性的、更高准确度的微小角度测量的实现提供参考。