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

0471016 - ÚPT 2018 RIV US eng J - Journal Article
Vojtěch, J. - Šlapák, M. - Škoda, P. - Radil, J. - Havliš, O. - Altmann, M. - Münster, P. - Velc, R. - Kundrát, J. - Altmannová, L. - Vohnout, R. - Horváth, T. - Hůla, M. - Smotlacha, V. - Čížek, Martin - Pravdová, Lenka - Řeřucha, Šimon - Hrabina, Jan - Číp, Ondřej
Joint accurate time and stable frequency distribution infrastructure sharing fiber footprint with research network.
Optical Engineering. Roč. 56, č. 2 (2017), s. 1-7, č. článku 027101. ISSN 0091-3286. E-ISSN 1560-2303
R&D Projects: GA ČR GB14-36681G
Institutional support: RVO:68081731
Keywords : accurate time * stable frequency * wavelength division multiplexing * bidirectional reciprocal path * Sagnac effect
OECD category: Optics (including laser optics and quantum optics)
Impact factor: 0.993, year: 2017

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.
Permanent Link: http://hdl.handle.net/11104/0271691