Počet záznamů: 1
National Infrastructure for Dissemination of Precise Time and Ultra-stable Optical Frequency also Aiming to Connect Quantum Sources: CITAF
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SYSNO ASEP 0575210 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV D - Článek ve sborníku Název National Infrastructure for Dissemination of Precise Time and Ultra-stable Optical Frequency also Aiming to Connect Quantum Sources: CITAF Tvůrce(i) Vojtěch, J. (CZ)
Smotlacha, V. (CZ)
Havliš, O. (CZ)
Vohnout, R. (CZ)
Špaček, M. (CZ)
Novák, T. (CZ)
Andriantsarazo, E. (CZ)
Šlapák, M. (CZ)
Altmannová, L. (CZ)
Velc, R. (CZ)
Pospíšil, P. (CZ)
Kundrát, J. (CZ)
Čížek, Martin (UPT-D) RID, ORCID, SAI
Hrabina, Jan (UPT-D) RID, ORCID, SAI
Řeřucha, Šimon (UPT-D) RID, ORCID, SAI
Pravdová, Lenka (UPT-D) RID, ORCID, SAI
Lazar, Josef (UPT-D) RID, ORCID, SAI
Číp, Ondřej (UPT-D) RID, SAI, ORCID
Kuna, Alexander (URE-Y) RID, RID, ORCID, SAI
Roztočil, J. (CZ)Celkový počet autorů 20 Číslo článku 1257003 Zdroj.dok. Quantum Optics and Photon Counting 2023. - Bellingham : SPIE, 2023 / Procházka I. ; Sobolewski R. - ISSN 0277-786X - ISBN 978-1-5106-6260-5 Rozsah stran (2023) Edice Proceedings of SPIE Poč.str. 6 s. Forma vydání Tištěná - P Akce Quantum Optics and Photon Counting 2023 Datum konání 26.04.2023 - 27.04.2023 Místo konání Prague Země CZ - Česká republika Typ akce WRD Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova precise time ; coherent optical frequency ; time metrology ; infrastructure ; optical amplification ; optical fibre ; White Rabbit Vědní obor RIV JW - Navigace, spojení, detekce a protiopatření Obor OECD Telecommunications Vědní obor RIV – spolupráce Ústav fotoniky a elektroniky - Navigace, spojení, detekce a protiopatření Institucionální podpora UPT-D - RVO:68081731 ; URE-Y - RVO:67985882 UT WOS 001023007300002 EID SCOPUS 85170642941 DOI 10.1117/12.2665497 Anotace There has been an increased focus on precise time and frequency transmission dissemination at a national and international level recently. We would like to present the situation in the Czech Republic, our strategy, approach, and our experience with a non-commercial, cost-effective solution that utilizes shared optical networks. The presented solution provides accurate time and stable frequency at a lower operational cost, utilizing the shared spectrum of the CESNET3 network infrastructure. We are committed to future developments and upgrades that will include the next wavelength bands and geographic extensions. Additionally, we have implemented bidirectional dark channels on various wavebands, which utilize shared leased fibers and offer bidirectional compensation for fiber losses. However, operating precise time and frequency requires a single path with bidirectional amplification performed by optical amplifiers, which are sensitive to feedback from the fiber line induced by back-scattering, and reflections, and which can cause unwanted oscillations. We have addressed this issue by carefully solving the interference with parallel data transmissions. In summary, we have implemented a cost-effective solution for precise time and frequency dissemination in the Czech Republic, which utilizes shared optical networks. We are committed to future developments, and we are also part of a consortium that plans to realize a Pan-European network to offer time and frequency services to a broad range of users. Pracoviště Ústav přístrojové techniky Kontakt Martina Šillerová, sillerova@ISIBrno.Cz, Tel.: 541 514 178 Rok sběru 2024 Elektronická adresa https://www.spiedigitallibrary.org/conference-proceedings-of-spie/12570/2665497/National-infrastructure-for-dissemination-of-precise-time-and-ultra-stable/10.1117/12.2665497.short
Počet záznamů: 1