光学学报, 2015, 35(4): 0406004, 网络出版: 2015-04-01

基于100 km光纤链路的时间和频率同时传递

Simultaneous Transfer of Time and Frequency Over 100 km Fiber Link
作者单位

1上海交通大学区域光纤通信网与新型光通信系统国家重点实验室, 上海 200240

2上海交通大学, 上海市北斗导航与位置服务重点实验室, 上海 200240

3浙江师范大学数理信息与工程学院, 浙江 金华 321004

摘要
提出了一种基于光纤的时间和频率同时传递方案。采用基于温控光纤延迟线和压电陶瓷(PZT)光纤延迟线的光学相位噪声补偿技术实现高稳定的频率传递。同时,通过波分复用技术在稳定的光纤链路上进行基于时分复用的高精度同纤同波双向时间传递。在100 km 的光纤链路上进行了时间和频率同时传递实验,光纤频率传递链路的秒稳定度和天稳定度分别达到5.25 × 10-14 和1.9 × 10-17 ;双向时间比对在1 s 处的时间传递秒稳定度优于40ps,在平均时间1000 s处优于1.5 ps。时间差抖动的峰-峰值和标准差分别小于400 ps和45 ps。
Abstract
A simultaneous transfer scheme of time and frequency over optical fiber is presented. High- stable frequency transfer is realized by adopting the active phase noise compensation method based on the temperaturecontrolled fiber delay line and the piezoelectric ceramics transducer (PZT) delay line. At the same time, high precision two-way time transfer using bidirectional time division multiplexing transmission is carried out on the stable optical fiber link through wavelength division multiplexing technology. A simultaneous transfer of time and frequency over 100 km fiber is demonstrated. The results show that the frequency transfer can reach stabilities of 5.25 × 10-14 at 1 s and 1.9 × 10-17 at one day,and the time transfer can reach stabilities of 40 ps at 1 s average time and 1.5 ps at 1000 s average time. The peak-peak value and standard deviation of the two-way time transfer are below 400 ps and 45 ps, respectively.
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