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采用级联方式在230 km 光纤链路中同时实现频率传递和时间同步

Simultaneous Frequency Transfer and Time Synchronization over a Cascaded Fiber Link of 230 km

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摘要

The joint transfer of frequency and one pulse-per-second time signals based on dense wavelength division multiplexing technology is demonstrated over a compensated cascaded fiber link of 230 km, consisting of two stages of fiber links with lengths of 150 km and 80 km . A bi-directional erbium-doped fiber amplifier is inserted in the center of 150 km fiber link to compensate for significant optical attenuation. After every stage has achieved the steady state by optical compensation, the Allan deviation of frequency signal of the cascaded system is 3.1×10-14 at 1 s and 6.3 × 10-18 at 104 s respectively; the time deviation of time signal is less than 3.5 ps at an averaging time of 102 s to 104 s. Further, it is verified that the stability of the cascaded link is the standard deviation of the stabilities of the two stages links for both frequency and time signals. After calibration, time synchronization is also realized and the accuracy is within 90 ps.

Abstract

基于波分复用技术,通过级联方式在230 km 光纤链路中实现了频率和时间的同传。该级联系统包含了150 km 和80 km 两级链路系统,其中为了补偿150 km 光纤链路中的损耗,在链路中间放置了一个双向掺铒光纤放大器。当每一级传递系统通过光学补偿方式达到稳定后,整个级联系统的频率稳定度为3.1×10-14(平均时间1 s时)和6.3×10-18(平均时间104 s时),时间稳定度为3.5 ps(平均时间102~104 s时)。实验结果也证明,不管是对频率信号还是时间信号,都满足误差理论,整个系统的稳定度几乎等于两级链路稳定度的标准偏差。同时通过两级系统的校准,最后得到整个级联系统的时间同步准确度为90 ps。

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中图分类号:O439

DOI:10.3788/cjl201643.0305006

所属栏目:光通信

基金项目:国家自然科学基金(61405227)

收稿日期:2015-10-13

修改稿日期:2015-11-14

网络出版日期:--

作者单位    点击查看

刘琴:中国科学院上海光学精密机械研究所中科院量子光学重点实验室, 上海 201800
陈炜:中国科学院上海光学精密机械研究所上海市全固态激光器与应用技术重点实验室, 上海 201800
徐丹:中国科学院上海光学精密机械研究所上海市全固态激光器与应用技术重点实验室, 上海 201800
程楠:中国科学院上海光学精密机械研究所上海市全固态激光器与应用技术重点实验室, 上海 201800
杨飞:中国科学院上海光学精密机械研究所上海市全固态激光器与应用技术重点实验室, 上海 201800
桂有珍:中国科学院上海光学精密机械研究所中科院量子光学重点实验室, 上海 201800
蔡海文:中国科学院上海光学精密机械研究所上海市全固态激光器与应用技术重点实验室, 上海 201800
韩申生:中国科学院上海光学精密机械研究所中科院量子光学重点实验室, 上海 201800

联系人作者:刘琴(diudiudashu@163.com)

备注:刘琴(1988—),女,博士研究生,主要从事光纤时频传递方面的研究。

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引用该论文

Liu Qin,Chen Wei,Xu Dan,Cheng Nan,Yang Fei,Gui Youzhen,Cai Haiwen,Han Shensheng. Simultaneous Frequency Transfer and Time Synchronization over a Cascaded Fiber Link of 230 km[J]. Chinese Journal of Lasers, 2016, 43(3): 0305006

刘琴,陈炜,徐丹,程楠,杨飞,桂有珍,蔡海文,韩申生. 采用级联方式在230 km 光纤链路中同时实现频率传递和时间同步[J]. 中国激光, 2016, 43(3): 0305006

被引情况

【1】刘琴,韩圣龙,王家亮,冯子桐,陈炜,程楠,桂有珍,蔡海文,韩申生. 采用级联方式实现430 km高精度频率传递. 中国激光, 2016, 43(9): 906001--1

【2】熊晓锋,杨飞,桂有珍,蔡海文,苏觉,朱祖勍. 光纤通信网中波长选择开关的时频传递性能. 中国激光, 2018, 45(1): 106003--1

【3】周旭,陈法喜,赵侃,刘涛,张首刚. 光纤时间传递的时延测量技术. 激光与光电子学进展, 2018, 55(8): 81201--1

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