Phase-Noise Characterization in Stable Optical Frequency Transfer over Free Space and Fiber Link Testbeds-Reference-Cited by-同舟云学术

Phase-Noise Characterization in Stable Optical Frequency Transfer over Free Space and Fiber Link Testbeds

Published:2023-12-02 Issue:23 Volume:12 Page:4870
ISSN:2079-9292
Container-title:Electronics
language:en
Short-container-title:Electronics

Author:

Barcik Peter¹^ORCID,Hrabina Jan²^ORCID,Cizek Martin²^ORCID,Kolka Zdenek¹^ORCID,Skryja Petr¹^ORCID,Pravdova Lenka²^ORCID,Cip Ondrej²^ORCID,Hudcova Lucie¹^ORCID,Havlis Ondrej³⁴^ORCID,Vojtech Josef³^ORCID

Affiliation:

1. Department of Radioelectronics, Brno University of Technology, 616 00 Brno, Czech Republic

2. Department of Coherence Optics, Institute of Scientific Instruments of the Czech Academy of Sciences, 612 64 Brno, Czech Republic

3. Department of Optical Networks, CESNET z.s.p.o, 160 00 Prague, Czech Republic

4. Department of Telecommunications, Brno University of Technology, 616 00 Brno, Czech Republic

Abstract

Time and frequency metrology depends on stable oscillators in both radio-frequency and optical domains. With the increased complexity of the highly precise oscillators also came the demand for delivering the oscillators’ harmonic signals between delocalized sites for comparison, aggregation, or other purposes. Besides the traditional optical fiber networks, free-space optical links present an alternative tool for disseminating stable sources’ output. We present a pilot experiment of phase-coherent optical frequency transfer using a free-space optical link testbed. The experiment performed on a 30 m long link demonstrates the phase-noise parameters in a free-space optical channel under atmospheric turbulence conditions, and it studies the impact of active MEMS mirror stabilization of the received optical wave positioning on the resulting transfer’s performance. Our results indicate that a well-configured MEMS mirror beam stabilization significantly enhances fractional frequency stability, achieving the−14th-order level for integration times over 30 s.

Funder

FR CESNET

MEYS Czech Republic and ERDF

Czech Academy of Sciences

the European Partnership on Metrology, co-financed from the European Union’s Horizon Europe Research and Innovation Program and by the Participating States

Publisher

MDPI AG

Subject

Electrical and Electronic Engineering,Computer Networks and Communications,Hardware and Architecture,Signal Processing,Control and Systems Engineering

Link

https://www.mdpi.com/2079-9292/12/23/4870/pdf

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