外文题目: Joint transfer of time and frequency signals and multi-point synchronization via fiber network
作者: 程楠; 陈炜; 刘琴; 徐丹; 杨飞; 桂有珍; 蔡海文
刊名: Chin. Phys. B
年: 2016 卷: 25 期: 1 文章编号：14206
英文关键词:
joint time and frequency transfer; optical compensation; time synchronization
PROPAGATION DELAY; STABILIZATION
英文摘要:
system of jointly transferring time signals with a rate of 1 pulse per second (PPS) and frequency signals of 10 MHz via a dense wavelength division multiplex-based (DWDM) fiber is demonstrated in this paper. The noises of the fiber links are suppressed and compensated for by a controlled fiber delay line. A method of calibrating and characterizing time is described. The 1PPS is synchronized by feed-forward calibrating the fiber delays precisely. The system is experimentally examined via a 110 km spooled fiber in laboratory. The frequency stabilities of the user end with compensation are 1.8 x 10(-14) at 1 s and 2.0 x 10(-17) at 10(4) s average time. The calculated uncertainty of time synchronization is 13.1 ps, whereas the direct measurement of the uncertainty is 12 ps. Next, the frequency and 1PPS are transferred via a metropolitan area optical fiber network from one central site to two remote sites with distances of 14 km and 110 km. The frequency stabilities of 14 km link reach 3.0 x 10(-14) averaged in 1 s and 1.4 x 10(-17) in 104 s respectively; and the stabilities of 110 km link are 8.3 x 10(-14) and 1.7 x 10(-17), respectively. The accuracies of synchronization are estimated to be 12.3 ps for the 14 km link and 13.1 ps for the 110 km link, respectively.


文献类型: 期刊论文
正文语种: English
收录类别: SCI
DOI: 10.1088/1674-1056/25/1/014206


全文传递服务