Knowledge Management System Of National Time Service Center,CAS
| High-precision dual-wavelength time transfer via1085-km telecommunication fiber link | |
| Chen Fa-Xi1,2; Zhao Kan2; Li Bo2; Liu Bo2; Guo Xin-Xing2; Kong Wei-Cheng2,3; Chen Guo-Chao2,3; Guo Bao-Long1; Liu Tao2; Zhang Shou-Gang2 | |
| 2021-04-05 | |
| 发表期刊 | ACTA PHYSICA SINICA
 |
| ISSN | 1000-3290 |
| 卷号 | 70期号:7页码:10 |
| 摘要 | To reduce the influence of fiber dispersion on accuracy of fiber-based time synchronization, a method of dispersion-error corrected dual-wavelength time synchronization is proposed in this paper. Specificlly, the method is to measure the dispersion coefficient of the fiber link, and then input it to each remote terminal, the time delay error caused by the fiber dispersion is eliminated through the delay phase controller. With the self-developed engineering prototypes, the experimental verifications are subsequently made both in laboratory and real field. Before the test, 16 devices of time synchronization are connected in series for calibration. The time synchronization system is able to keep delay difference within +/- 15 ps after being calibrated. In the laboratory, the experimental setup is built by cascading 16 rolls of 50km-long fiber coils, and the total length of the fiber link is 800 km. The experimental results show that the dispersion coefficient of 800 km fiber link is 13.36 ps/(km.nm), and the delay error caused by dispersion is maintained within 10 ps after correction. The stability of the time transfer is 5.7 ps in standard deviation and the time deviation is 1.12 ps at an averaging time of 100000 s. In the real field test, a 1085-km-long field fiber link is utilized, along which 16 self-developed time-frequency transceiversare set at the cascaded fiber-optic stations. After being corrected with a dispersion coefficient of 16.67 ps/(km.nm) for 1085 km urban fiber link, the time transfer is demonstrated to have a dispersion-caused delay error of 60 ps. The experimental results show that the time standard deviation is 18 ps and the time transfer instability is 9.2 ps at an averaging time of 1 s and 5.4 ps at an averaging time of 40000 s. Finally, the time uncertainty of 800-km-long laboratory optical fiber link and 1085-km-long urban optical fiber link are evaluated, and the time uncertainty is 18.4 ps and 63.5 ps, respectively. This work paves the way for constructing the time synchronization fiber network in China. To further reduce the delay error caused by dispersion in a long-distance time transfer link, the more accurate thermal control of the lasers should be adopted to reduce the shifts of forward and backward wavelengths. |
| 关键词 | fiber link time synchronization synchronization network |
| 资助者 | National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Key R&D Program of Guangdong Province, China ; Key R&D Program of Guangdong Province, China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Key R&D Program of Guangdong Province, China ; Key R&D Program of Guangdong Province, China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Key R&D Program of Guangdong Province, China ; Key R&D Program of Guangdong Province, China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Key R&D Program of Guangdong Province, China ; Key R&D Program of Guangdong Province, China |
| DOI | 10.7498/aps.70.20201277 |
| 语种 | 英语 |
| 资助项目 | National Key R&D Program of China[2016YFF0200200] ; National Natural Science Foundation of China[91636101] ; National Natural Science Foundation of China[91836301] ; National Natural Science Foundation of China[11803041] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB21000000] ; Key R&D Program of Guangdong Province, China[2018B030325001] |
| 资助者 | National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Key R&D Program of Guangdong Province, China ; Key R&D Program of Guangdong Province, China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Key R&D Program of Guangdong Province, China ; Key R&D Program of Guangdong Province, China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Key R&D Program of Guangdong Province, China ; Key R&D Program of Guangdong Province, China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Key R&D Program of Guangdong Province, China ; Key R&D Program of Guangdong Province, China |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Multidisciplinary |
| WOS记录号 | WOS:000637968800005 |
| 出版者 | CHINESE PHYSICAL SOC |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://210.72.145.45/handle/361003/11038 |
| 专题 | 中国科学院国家授时中心 |
| 通讯作者 | Chen Fa-Xi; Zhao Kan |
| 作者单位 | 1.Xidian Univ, Xian 710071, Peoples R China 2.Chinese Acad Sci, Natl Time Serv Ctr, Xian 710600, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen Fa-Xi,Zhao Kan,Li Bo,et al. High-precision dual-wavelength time transfer via1085-km telecommunication fiber link[J]. ACTA PHYSICA SINICA,2021,70(7):10. |
| APA | Chen Fa-Xi.,Zhao Kan.,Li Bo.,Liu Bo.,Guo Xin-Xing.,...&Zhang Shou-Gang.(2021).High-precision dual-wavelength time transfer via1085-km telecommunication fiber link.ACTA PHYSICA SINICA,70(7),10. |
| MLA | Chen Fa-Xi,et al."High-precision dual-wavelength time transfer via1085-km telecommunication fiber link".ACTA PHYSICA SINICA 70.7(2021):10. |
| 条目包含的文件 | 条目无相关文件。 | |||||
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
修改评论