在 1839 千米长的电信光纤链路中进行时间传输，显示出皮秒级的稳定性

IF 3.5 2区物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY

Chinese Physics Letters Pub Date : 2024-05-15 DOI:10.1088/0256-307x/41/6/064202

Xinxing Guo, Bing'an Hou, Bo Liu, Fan Yang, Weicheng Kong, Tao Liu, Ruifang Dong, Shougang Zhang

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引用次数: 1

摘要

本文报告了在中国两个省会城市（西安和太原）之间长达 1839 千米的现场光纤环回链路上实现高精度时间传输的情况。在平均时间为 1 秒和 40000 秒时，时间传输稳定性分别达到 6.5 ps 和 4.6 ps。对时间转移系统的不确定性进行了评估，结果显示预算为 56.2 ps。这些结果是在跨越数千公里的现场光纤链路上实现高精度时间传送的一个重要里程碑，标志着实况时间传送在稳定性和距离上都取得了破纪录的成就，为通过光纤网络构建全国范围的高精度时间服务铺平了道路。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Time transfer in an 1839-km telecommunication fiber link demonstrating a picosecond-scale stability

In this letter, an implementation of high-precision time transfer over an 1839-km field fiber loop back link between two provincial capitals of China, Xi'an and Taiyuan, is reported. Time transfer stability of 6.5 ps at an averaging time of 1 s and 4.6 ps at 40000 s were achieved. The uncertainty for the time transfer system was evaluated, showing a budget of 56.2 ps. These results represent a significant milestone in achieving high-precision time transfer over a field fiber link spanning thousands of kilometers, signifying a record-breaking achievement for the real-field time transfer both in stability and in distance, which paves the way for constructing the nationwide high-precision time service via fiber network.

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来源期刊

Chinese Physics Letters 物理-物理：综合

CiteScore

5.90

自引率

8.60%

发文量

13238

审稿时长

4 months

期刊介绍： Chinese Physics Letters provides rapid publication of short reports and important research in all fields of physics and is published by the Chinese Physical Society and hosted online by IOP Publishing.