National Infrastructure for Clock Network Services: CITAF

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081731%3A_____%2F22%3A00564531" target="_blank" >RIV/68081731:_____/22:00564531 - isvavai.cz</a>

Result on the web

<a href="https://www.spiedigitallibrary.org/conference-proceedings-of-spie/12233/122330C/National-research-infrastructure-for-clock-network-services-CITAF/10.1117/12.2635013.short" target="_blank" >https://www.spiedigitallibrary.org/conference-proceedings-of-spie/12233/122330C/National-research-infrastructure-for-clock-network-services-CITAF/10.1117/12.2635013.short</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1117/12.2635013" target="_blank" >10.1117/12.2635013</a>

Result language

angličtina

Original language name

National Infrastructure for Clock Network Services: CITAF

Original language description

National time and frequency dissemination networks are being developed in many countries, also international connections are being established. In the contribution we present Czech Infrastructure for Time and Frequency as a noncommercial, open activity focused on the transfer of accurate time and very stable frequency using optical networks. The national optical infrastructure for time and frequency transfer is operated on top of the CESNET network infrastructure, to have operational cost under control. We also address actually running and planned upgrades and future development plans regarding wavelength bands and considered geographic extensions. We will also focus on creation of bidirectional dark channels on different wavebands within shared fibers together with bidirectional compensation of fiber losses. Single path bidirectional amplification utilizing lumped optical amplifiers is sensitive to feedback from fiber line like back scattering and reflections and in case of increased feedback can produce unwanted oscillations, which potentially interfere with parallel data transmissions. We will also briefly mention the CLONETS-DS project working on design study for coherent Pan-European time and frequency dissemination network, which would connect national networks and provide different services based on time and frequency for a wide range of users.

Czech name

—

Czech description

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Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

20203 - Telecommunications

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2022

Confidentiality

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

Article name in the collection

Infrared Remote Sensing and Instrumentation XXX

ISBN

978-151065450-1

ISSN

—

e-ISSN

—

Number of pages

6

Pages from-to

(2022)

Publisher name

SPIE

Place of publication

Bellingham

Event location

San Diego

Event date

Aug 21, 2022

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000882946600010