CITAF - National Infrastructure for Dissemination of Precise Time and Ultra-stable Optical Frequency

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F63839172%3A_____%2F23%3A10133589" target="_blank" >RIV/63839172:_____/23:10133589 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

CITAF - National Infrastructure for Dissemination of Precise Time and Ultra-stable Optical Frequency

Original language description

National time and frequency dissemination networks are being developed in manycountries; also international connections are being established. In the contributionwe present Czech Infrastructure for Time and Frequency as a non-commercial,open activity focused on the transfer of accurate time and very stable frequencyusing optical networks. The national optical infrastructure for time and frequencytransfer is operated on top of the CESNET network infrastructure, to haveoperational cost under control. We also address actually running and plannedupgrades and future development plans regarding wavelength bands andconsidered geographic extensions. We will also focus on creation of bidirectionaldark channels on different wavebands within shared fibers together withbidirectional compensation of fiber losses. Single path bidirectional amplificationutilizing lumped optical amplifiers is sensitive to feedback from fiber line likeback scattering and reflections and in case of increased feedback can produceunwanted oscillations, which potentially interfere with parallel datatransmissions. We will also briefly mention the results and recommendations ofCLONETS-DS project, which presented design study for coherent Pan-Europeantime and frequency dissemination network, which would connect nationalnetworks and and provide different services based on time and frequency for awide range of users.

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

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OECD FORD branch

20203 - Telecommunications

Project

<a href="/en/project/LM2023054" target="_blank" >LM2023054: e-Infrastructure CZ</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2023

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů