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Optical Engineering • Open Access

Joint accurate time and stable frequency distribution infrastructure sharing fiber footprint with research network
Author(s): 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

Paper 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.

Paper Details

Date Published: 6 February 2017
PDF: 7 pages
Opt. Eng. 56(2) 027101 doi: 10.1117/1.OE.56.2.027101
Published in: Optical Engineering Volume 56, Issue 2
Show Author Affiliations
Josef Vojtech, CESNET z.s.p.o. (Czech Republic)
Martin Slapak, CESNET z.s.p.o. (Czech Republic)
Pavel Skoda, CESNET z.s.p.o. (Czech Republic)
Jan Radil, CESNET z.s.p.o. (Czech Republic)
Ondrej Havlis, CESNET z.s.p.o. (Czech Republic)
Michal Altmann, CESNET z.s.p.o. (Czech Republic)
Petr Munster, CESNET z.s.p.o. (Czech Republic)
Radek Velc, CESNET z.s.p.o. (Czech Republic)
Jan Kundrat, CESNET z.s.p.o. (Czech Republic)
Lada Altmannova, CESNET z.s.p.o. (Czech Republic)
Rudolf Vohnout, CESNET z.s.p.o. (Czech Republic)
Tomas Horvath, CESNET z.s.p.o. (Czech Republic)
Miloslav Hula, CESNET z.s.p.o. (Czech Republic)
Vladimir Smotlacha, CESNET z.s.p.o. (Czech Republic)
Martin Cizek, Institute of Scientific Instruments of the ASCR, v.v.i. (Czech Republic)
Lenka Pravdova, Institute of Scientific Instruments of the ASCR, v.v.i. (Czech Republic)
Simon Rerucha, Institute of Scientific Instruments of the ASCR, v.v.i. (Czech Republic)
Jan Hrabina, Institute of Scientific Instruments of the ASCR, v.v.i. (Czech Republic)
Ondrej Cip, Institute of Scientific Instruments of the ASCR, v.v.i. (Czech Republic)


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