Fiber-based Radio Frequency Dissemination for Branching Networks with Passive Phase Noise Cancellation

TL;DR

This paper presents a novel fiber-based RF dissemination method for branching networks that achieves high stability without active feedback, enabling scalable, cost-effective frequency synchronization across multiple remote sites.

Contribution

It introduces a passive phase noise cancellation scheme for fiber-based RF dissemination, eliminating the need for active feedback or phase controls.

Findings

Achieves relative frequency stability of 6E-15/1 day for 10 km dissemination.

Supports simultaneous, independent delivery to multiple remote sites.

Offers a low-cost, scalable solution for large-scale frequency synchronization networks.

Abstract

We demonstrate a new fiber-based radio frequency dissemination scheme for branching networks. Without any phase controls on RF signals or usages of active feedback locking components, the highly stable reference frequency signal can be delivered to several remote sites simultaneously and independently. Relative frequency stability of 6E-15/s and 7E-17/1E4s is obtained for 10km dissemination. The proposed low cost and scalable method can be applied to some large-scale frequency synchronization networks.