High-precision fiber-optic time transfer with an unlimited compensation range

被引：1
|
作者：
Han, Darning [1 ]
Wei, Wei [2 ,3 ]
Xie, Weilin [2 ,3 ]
Dong, Yi [2 ,3 ]
机构：
[1] Shanghai Jiao Tong Univ, State Key Lab Adv Opt Commun Syst & Networks, Shanghai 200240, Peoples R China
[2] Beijing Inst Technol, Sch Opt & Photon, Key Lab Photon Informat Technol, Minist Ind & Informat Technol, Beijing 100081, Peoples R China
[3] Beijing Inst Technol, Yangtze Delta Reg Acad, Jiaxing 314011, Peoples R China
来源：
OPTICS LETTERS | 2023年 / 48卷 / 22期
基金：
中国国家自然科学基金;
关键词：
703.1 Electric Networks - 713.2 Oscillators - 741.1.2 Fiber Optics - 941.4 Optical Variables Measurements - 961 Systems Science;
D O I：
10.1364/OL.502388
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We present a fiber-optic time transfer system with high transfer stability and an unlimited compensation range of the delay variation. We first stably transmit a frequency signal from a voltage-controlled oscillator to the remote site. The time signal is then embedded in the frequency signal by simply selecting its one cycle per second with a tunable gate signal. Therefore, the proposed time transfer system inherits both the stability and the unlimited adjustment range of the frequency transfer yet with no need for demodulation. The time deviation of 1.93 ps is achieved at 1000-s averaging. This simple and demodulation-free time transfer system is applicable for scalable distributed applications that require high-precision time synchronization and wide-range delay compensation. (c) 2023 Optica Publishing Group
引用
收藏
页码：5943 / 5946
页数：4
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