Joint Time and Frequency Dissemination Network Over Delay-Stabilized Fiber Optic Links

Author

Wei Chen ; Qin Liu ; Nan Cheng ; Dan Xu ; Fei Yang ; Youzhen Gui ; Haiwen Cai

Author_Institution

Shanghai Key Lab. of All Solid-State Laser & Appl. Tech., Shanghai Inst. of Opt. & Fine Mech., Shanghai, China

Volume

7

Issue

3

fYear

2015

fDate

Jun-15

Firstpage

1

Lastpage

9

Abstract

A precise fiber-based time and frequency dissemination scheme for multiple users with a tree-like branching topology is proposed. Through this scheme, ultrastable signals can be easily accessed online without affecting other sites. The scheme is tested through an experiment, in which a modulated frequency signal and a synchronized time signal are transferred to multiple remote sites over delay-stabilized fiber optic links that are over 50 km long. Results show that the relative stabilities are 5 x 10^-14 at 1 s and 2 x 10^-17 at 104 s. Meanwhile, compared with each site, time synchronization precision is less than 80 ps. These results can pave the way to practical applications in joint time and frequency dissemination network systems.

Keywords

delays; optical fibre communication; optical links; delay-stabilized fiber optic links; frequency dissemination network; modulated frequency signal; synchronized time signal; time 104 s; time dissemination network; time synchronization; tree-like branching topology; ultrastable signals; Delays; Frequency modulation; Laser stability; Optical fibers; Synchronization; Time-frequency analysis; Fiber optics systems; fiber optics network; fiber optics systems; fiber opticsnetwork; frequency stability; time and frequency transfer;

fLanguage

English

Journal_Title

Photonics Journal, IEEE

Publisher

ieee

ISSN

1943-0655

Type

jour

DOI

10.1109/JPHOT.2015.2426874

Filename

7096913