量子电子学报, 2018, 35 (3): 374, 网络出版: 2018-06-09
光纤耦合中的偏振匹配优化
Optimization of polarization matching in fiber coupling
纤维与波导光学 单模保偏光纤 偏振匹配 功率稳定 偏振器 fiber and waveguide optics single-mode polarization-maintaining fiber polarization matching power stabilization polarizer
摘要
单模保偏光纤因其优良的保偏特性而被广泛应用。在冷原子精密测量领域,光路搭建过 程中用光纤引导激光到不同的实验平台以实现激光功率的合理分配,光纤入射端光偏振匹配不好会 导致输出光功率发生严重抖动。以397 nm激光为例介绍了如何使空间传输的线偏振激光的偏振方向与 保偏光纤的双折射轴匹配。在光纤输出端放置一个偏振器,通过旋转偏振器可将光纤输出光的功率抖动控制在5%左右。
Abstract
Single mode polarization-maintaining fibers are widely used for its excellent polarization-maintaining property. In the field of precision measurement of cold atoms, in order to realize the reasonable distribution of laser power, lasers are guided with fibers into different experiment platforms in the process of optical path building. Poor laser polarization matching at the fiber incident end can cause severe jitter of output laser power. Taking the 397 nm laser as an example, it’s introduced how to match the polarization direction of linearly polarized laser in space with the birefringence axis of polarization-maintaining fiber. A polarizer is placed at the fiber output end, and laser power jitter out of the fiber can be controlled at about 5% by rotating the polarizer.
宋红芳, 曾孟彦, 黄垚, 管桦, 高克林. 光纤耦合中的偏振匹配优化[J]. 量子电子学报, 2018, 35(3): 374. SONG Hongfang, ZENG Mengyan, HUANG Yao, GUAN Hua, GAO Kelin. Optimization of polarization matching in fiber coupling[J]. Chinese Journal of Quantum Electronics, 2018, 35(3): 374.