基于光梳的自由空间双向时频传递技术研究现状及趋势  

Research Status and Trend of Free Space Bidirectional Time-frequency Transfer Technology Based on Optical Comb

作　　者：卢樟健 蒙艳松[1] 王国永[1] 姚渊博 LU Zhangjian;MENG Yansong;WANG Guoyong;YAO Yuanbo(China Academy of Space Technology(Xi’an),Xi’an 710000,China)

机构地区：[1]中国空间技术研究院西安分院,西安710000

出　　处：《空间电子技术》2021年第1期1-7,共7页Space Electronic Technology

基　　金：国家重大科研仪器研制项目(编号:61627817);国家自然基金青年基金课题(编号:11803023)。

摘　　要：随着光钟精度的不断提高,光学时频传递技术已经成为当前的研究热点。基于光梳的自由空间双向时频传递技术既能实现高精度的时间传递又能实现高精度的频率传递,已经成为当前光学时频传递技术的主要发展方向之一。本文介绍了基于光梳的自由空间双向时频传递技术的主要概念及方法,并对它的发展现状和趋势进行了总结和分析。目前基于光梳的自由空间双向时频传递技术可以在公里级的大气湍流信道上实现亚飞秒级的时间同步。该方法将为光钟远程比对和“秒”的重新定义提供技术支撑。With the continuous improvement of the accuracy of the optical clock,optical time-frequency transfer technology has become the current research hotspot.Free space bidirectional time-frequency transfer technology based on optical comb can realize both high-precision time-frequency transfer and high-precision frequency transfer,which has become one of the main development directions of optical time-frequency transfer technology.This paper introduces the main concepts and methods of Free space bidirectional time-frequency transfer technology based on optical comb,and summarizes and analyzes its development status and trend.At present,the Free space bidirectional time-frequency transfer technology based on optical comb can achieve sub femtosecond time synchronization in the kilometer level atmospheric turbulence channel.This method will provide technical support for the remote comparison of optical clock and the redefinition of second.

关 键 词：自由空间 时频传递 光梳 不稳定性来源 

分 类 号：V747[航空宇航科学技术]