Joint accurate time and stable frequency distribution infrastructure sharing fiber footprint with research network

Josef Vojtech; Martin Slapak; Pavel Skoda; Jan Radil; Ondrej Havlis; Michal Altmann; Petr Munster; Radek Velc; Jan Kundrat; Lada Altmannova; Rudolf Vohnout; Tomas Horvath; Miloslav Hula; Vladimir Smotlacha; Martin Cizek; Lenka Pravdova; Simon Rerucha; Jan Hrabina; Ondrej Cip

doi:10.1117/1.OE.56.2.027101

6 February 2017 Joint accurate time and stable frequency distribution infrastructure sharing fiber footprint with research network

Josef Vojtech, Martin Slapak, Pavel Skoda, Jan Radil, Ondrej Havlis, Michal Altmann, Petr Munster, Radek Velc, Jan Kundrat, Lada Altmannova, Rudolf Vohnout, Tomas Horvath, Miloslav Hula, Vladimir Smotlacha, Martin Cizek, Lenka Pravdova, Simon Rerucha, Jan Hrabina, Ondrej Cip

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Funded by: Ministry of Education, Youth and Sport of the Czech Republic as part of the CESNET E-infrastructure project, Grant Agency of the Czech Republic

Optical Engineering, Vol. 56, Issue 2, 027101 (February 2017). https://doi.org/10.1117/1.OE.56.2.027101

Abstract

The infrastructure essentialities for accurate time and stable frequency distribution are presented. Our solution is based on sharing fibers for a research and educational network carrying live data traffic with time and frequency transfer in parallel. Accurate time and stable frequency transmission uses mainly dark channels amplified by dedicated bidirectional amplifiers with the same propagation path for both directions of transmission. This paper targets challenges related to bidirectional transmission, particularly, directional nonreciprocities.

CC BY: © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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Josef Vojtech, Martin Slapak, Pavel Skoda, Jan Radil, Ondrej Havlis, Michal Altmann, Petr Munster, Radek Velc, Jan Kundrat, Lada Altmannova, Rudolf Vohnout, Tomas Horvath, Miloslav Hula, Vladimir Smotlacha, Martin Cizek, Lenka Pravdova, Simon Rerucha, Jan Hrabina, and Ondrej Cip "Joint accurate time and stable frequency distribution infrastructure sharing fiber footprint with research network," Optical Engineering 56(2), 027101 (6 February 2017). https://doi.org/10.1117/1.OE.56.2.027101

Received: 28 October 2016; Accepted: 12 January 2017; Published: 6 February 2017

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