Work

Time–frequency transfer over optical fiber

Year: 2025

Type: article

Abstract: Optical time-frequency transfer establishes the metrological linkage in large-scale clock networks, which facilitates various applications. Fiber-based transfer benefits from the abundant deployment of fiber infrastructures to achieve this advantage. In this review, we provide an overview of the advances in optical two-way time-frequency transfer, which began with characterizing the time-frequency transfer stability. Then, we discuss the system configuration, key modules, main challenges and mainstream transfer methods. Finally, the review concludes with an outlook on further applications toward global-scale high-precision clock networks.

Source: National Science Review

DOI: 10.1093/nsr/nwaf236

Authors: Ziyang Chen, Yufei Zhang, Bin Luo, Hong Guo

Institutions: Peking University, Beijing University of Posts and Telecommunications, State Key Laboratory of Information Photonics and Optical Communications

Language: English

Topic: Advanced Frequency and Time Standards

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,000

Funders: National Natural Science Foundation of China, National High-tech Research and Development Program