Dissemination stability and phase noise specification of fiber-cascaded RF frequency dissemination

TL;DR

This paper investigates the stability and phase noise characteristics of a fiber-cascaded RF frequency dissemination system through laboratory experiments, demonstrating how phase noise can be optimized with phase lock loops.

Contribution

It provides experimental analysis of dissemination stability and phase noise in a multi-segment fiber RF system, highlighting optimization techniques for phase noise reduction.

Findings

Dissemination stability measured for each fiber segment and the entire system.

Phase noise spectra can be improved using narrow band phase lock loops.

Experimental setup with three fiber segments totaling 145 km.

Abstract

Over the past decade, fiber based frequency dissemination has achieved significant progresses in following aspects. To study the dissemination stability and phase noise specifications of the fiber-cascaded RF frequency dissemination system, we perform a lab-top experiment using three sets of RF modulated frequency dissemination systems. They are linked by 50 km + 50 km +45 km fiber spools. The dissemination stabilities of each segments and whole system are measured simultaneously. After that, the phase noise of each segment is also measured and the result shows that the phase noise spectrums of recovered frequency signal can be optimized via narrow band phase lock loop.