A precise fiber-based time and frequency dissemination scheme for multiple users with a tree-like branching topology is proposed. Through this scheme, ultra-stable signals can be easily accessed online anywhere along the fiber 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 a delay-stabilized fiber optic links that are over 50 km long. Results show that the relative stabilities are 5E-14@1s and 2E-17@10000s. 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.
@article{arxiv.1501.05403,
title = {Joint time and frequency dissemination network over delay-stabilized fiber optic links},
author = {Wei Chen and Qin Liu and Nan Cheng and Dan Xu and Fei Yang and Youzhen Gui and Haiwen Cai},
journal= {arXiv preprint arXiv:1501.05403},
year = {2016}
}