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Purification technique with a hertz-linewidth laser for fiber-based optical frequency coherence dissemination

文献类型：期刊论文

作者Wang, Dan1,2,3; Liu, Jie1,3; Jiao, Dongdong1,3; Zang, Qi1,3; Zhang, Xiang1,3; Zhou, Qian1,2,3; Zhang, Yucan1,2,3; Xu, Guanjun1,3; Dong, Ruifang1,3; Liu, Tao1,3
刊名OPTICAL FIBER TECHNOLOGY
出版日期2024-10-01
卷号87页码:6
关键词Purification technique Hertz-linewidth laser Optical frequency dissemination Fiber network
ISSN号1068-5200
DOI10.1016/j.yofte.2024.103923
英文摘要We propose a purification relay station for optical frequency dissemination over long-distance communication fiber links particularly in complex environments. This technique addresses the challenge of phase noise suppression limitation due to dissemination delay in laser traversing fiber links. Utilizing a cavity-stabilized hertzlinewidth laser, we synchronized the phase noise with that of the signal received from the previous link within a 10 Hz bandwidth. Beyond this range, the phase noise followed the hertz-linewidth laser, decreasing from 20 rad to 6 rad. Furthermore, to ensure continuous coherence and stability of the disseminated laser, the data processing based on FPGA was employed to eliminate phase cycle slips in the previously disseminated optical frequency. We applied this technique to the optical frequency disseminated along with a 106 km communication fiber link. After optical frequency purification, the fractional frequency instability at a 1 s averaging time is reduced by a factor of three. Additionally, with the elimination of the phase cycle slips, the fractional frequency instability of purified optical frequency scales as 1 tau which matches with a signal dominated by phase-modulated white noise. At a 10,000 s averaging time, the purified optical frequency achieves a stability of 8.43 x 10-19, representing a reduction of two orders of magnitude compared to that of the previously disseminated optical frequency. This work establishes the foundation for the development of a nationwide optical frequency dissemination network involving long-distance fiber links in complex environments.
WOS关键词NETWORK ; LINK
WOS研究方向Engineering ; Optics ; Telecommunications
语种英语
WOS记录号WOS:001284266700001
出版者ELSEVIER SCIENCE INC
源URL[http://210.72.145.45/handle/361003/14491]  
专题国家授时中心_量子频标研究室
通讯作者Dong, Ruifang; Liu, Tao
作者单位1.Chinese Acad Sci, Key Lab Time Reference & Applicat, Xian, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
3.Chinese Acad Sci, Natl Time Serv Ctr, Xian, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Dan,Liu, Jie,Jiao, Dongdong,et al. Purification technique with a hertz-linewidth laser for fiber-based optical frequency coherence dissemination[J]. OPTICAL FIBER TECHNOLOGY,2024,87:6.
APA Wang, Dan.,Liu, Jie.,Jiao, Dongdong.,Zang, Qi.,Zhang, Xiang.,...&Zhang, Shougang.(2024).Purification technique with a hertz-linewidth laser for fiber-based optical frequency coherence dissemination.OPTICAL FIBER TECHNOLOGY,87,6.
MLA Wang, Dan,et al."Purification technique with a hertz-linewidth laser for fiber-based optical frequency coherence dissemination".OPTICAL FIBER TECHNOLOGY 87(2024):6.

入库方式： OAI收割

来源：国家授时中心

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