Avoiding Aliasing in Allan Variance: An Application to Fiber Link Data Analysis

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
C E CalossoS Micalizio

Abstract

Optical fiber links are known as the most performing tools to transfer ultrastable frequency reference signals. However, these signals are affected by phase noise up to bandwidths of several kilohertz and a careful data processing strategy is required to properly estimate the uncertainty. This aspect is often overlooked and a number of approaches have been proposed to implicitly deal with it. Here, we face this issue in terms of aliasing and show how typical tools of signal analysis can be adapted to the evaluation of optical fiber links performance. In this way, it is possible to use the Allan variance (AVAR) as estimator of stability and there is no need to introduce other estimators. The general rules we derive can be extended to all optical links. As an example, we apply this method to the experimental data we obtained on a 1284-km coherent optical link for frequency dissemination, which we realized in Italy.

References

May 26, 2007·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Samuel T DawkinsAndré N Luiten
Mar 10, 2010·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Samuel R Stein
Sep 22, 2011·Optics Express·Miho FujiedaTetsuya Ido
Nov 29, 2012·Optics Express·Olivier LopezGiorgio Santarelli
Aug 24, 2013·Science·N HinkleyA D Ludlow
Oct 1, 2013·Physical Review Letters·S DrosteR Holzwarth
Nov 13, 2015·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Cecilia ClivatiDavide Calonico

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Citations

Apr 2, 2018·The Review of Scientific Instruments·B RaufD Calonico
Oct 4, 2018·The Review of Scientific Instruments·Alex Tourigny-PlanteJean-Daniel Deschênes

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