高精度光学频率传递实验研究

Report of optical frequency transfer via fiber

在利用单模光纤传输窄线宽激光过程中,由光纤外部环境引入的相位噪声造成激光线宽的展宽。介绍了光纤相位噪声抑制的基本原理,建立了光纤相位噪声抑制实验系统。实验观测了该相位噪声抑制系统对激光通过20 m单模光纤后相位噪声抑制效果,等效光学频率传递精度优于3×10-18。

When a narrow-linewidth laser is transferred through a single-mode optical fiber, the phase noise induced by the environment, results in broadening of the laser linewidth. In this article, we introduced the basic principle of the fiber phase noise suppression, and established the experimental system of it. In the experiment we observed the laser phase noise suppression effect through the system of the fiber phase noise suppressing of a 20 m single-mode fiber, the precision of the optical frequency transfer is better than 3 × 10-18.