Large Timing Infrastructure with Sub-ns Precision in the Czech Republic, with Integration of Vibration Sensing

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F63839172%3A_____%2F25%3A10133842" target="_blank" >RIV/63839172:_____/25:10133842 - isvavai.cz</a>
Result on the web
<a href="https://laser.isibrno.cz/cs/Ke-stazeni/" target="_blank" >https://laser.isibrno.cz/cs/Ke-stazeni/</a>
DOI - Digital Object Identifier
—

Result language
angličtina
Original language name
Large Timing Infrastructure with Sub-ns Precision in the Czech Republic, with Integration of Vibration Sensing
Original language description
The distribution of ultra-precise time and phase-coherent optical frequency over dedicatedfibers or "dark" channels in Dense Wavelength Division Multiplexing (DWDM) networksunderpins cutting-edge scientific research, geophysical monitoring, and emerging industrialservices. By employing actively-stabilized, phase-coherent transfer links we achievesub-nanosecond timing jitter and fractional-frequency instabilities below 10-18 over severalhundred kilometres, while preserving the integrity of co-existing data traffic. In this work wedemonstrate that a shared dark spectrum within existing DWDM infrastructure cansimultaneously support high-precision time-frequency dissemination and distributed vibrationsensing. The same spectral allocation is used for real-time detection of environmentalperturbations such as seismic events and structural vibrations, leveraging phase-sensitiveOTDR and polarization-based sensing techniques.
Czech name
—
Czech description
—

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
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Sborník příspěvků multioborové konference LASER65
ISBN
978-80-87441-38-1
ISSN
—
e-ISSN
—
Number of pages
4
Pages from-to
136-139
Publisher name
Ústav přístrojové techniky AV ČR, v.v.i.
Place of publication
Brno, česká republika
Event location
Kurdějov, Česká republika
Event date
Nov 19, 2025
Type of event by nationality
CST - Celostátní akce
UT code for WoS article
—

Similar results(10)