中国激光, 2015, 42 (7): 0705002, 网络出版: 2022-09-24
光纤时间频率同时传递系统中时间同步方法的研究
Time Synchronization Technique for Joint Time and Frequency Transfer via Optical Fiber
光纤光学 时频传递 时间同步 光学补偿 波分复用 fiber optics time and frequency transfer time synchronization optical compensation wavelength division multiplexer
摘要
提出了一种应用于光纤时间频率传递系统中时间信号的校准和同步方案。分析了基于光学补偿方式和波分复用技术的时频传递系统中本地和远地时间信号同步方案的原理,并完成了实验室内50 km 光纤链路的验证实验,时间同步精度为1.6 ps。在110 km 的商用光纤链路上完成了时间信号的同步实验,理论计算的时间同步精度为30.0 ps,对时间信号的误差来源进行了理论分析。
Abstract
A time calibration and synchronization technique for joint time and frequency transfer via optical fiber is described. The time synchronization scheme for joint time and frequency transfer based on optical compensation technique and dense wavelength division multiplexer (DWDM) is theoretically analyzed. The verification experiment is achieved via 50 km optical fiber spool in the laboratory, the accuracy of time synchronization is 1.6 ps. The time synchronization via 110 km urban fiber link is described, whose accuracy is 30.0 ps. The source of the error of the synchronization is analyzed.
程楠, 陈炜, 刘琴, 徐丹, 杨飞, 桂有珍, 蔡海文. 光纤时间频率同时传递系统中时间同步方法的研究[J]. 中国激光, 2015, 42(7): 0705002. Cheng Nan, Chen Wei, Liu Qin, Xu Dan, Yang Fei, Gui Youzhen, Cai Haiwen. Time Synchronization Technique for Joint Time and Frequency Transfer via Optical Fiber[J]. Chinese Journal of Lasers, 2015, 42(7): 0705002.