Standard single-mode fiber and hollow-core fiber sensitivity to acoustic vibrations in audible spectrum

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F24%3APU152040" target="_blank" >RIV/00216305:26220/24:PU152040 - isvavai.cz</a>
Result on the web
<a href="https://www.spiedigitallibrary.org/conference-proceedings-of-spie/12999/129992R/Standard-single-mode-fiber-and-hollow-core-fiber-sensitivity-to/10.1117/12.3022465.full#_=_" target="_blank" >https://www.spiedigitallibrary.org/conference-proceedings-of-spie/12999/129992R/Standard-single-mode-fiber-and-hollow-core-fiber-sensitivity-to/10.1117/12.3022465.full#_=_</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1117/12.3022465" target="_blank" >10.1117/12.3022465</a>

Result language
angličtina
Original language name
Standard single-mode fiber and hollow-core fiber sensitivity to acoustic vibrations in audible spectrum
Original language description
Hollow-core fibers (HCF) are increasingly being studied and evaluated for telecommunication, as well as sensing application. They seem to have many advantages compare to standard single-mode fibers (SMF), especially in the area of the cyber-security of optical fiber infrastructures and also information they carrying. In our research we mainly focus on cyber-security issues, especially acoustic sensing. In the paper we evaluate sensitivity of negative curve HCF using a Mach–Zehnder interferometry (MZI). Results are compared with SMF (G.657 in this case). Both fibers were in primary coating with similar length. Sensitivity measurements were conducted within the controlled environment of an anechoic chamber. Results show that both fibers are sensitive to acoustic vibration and with post-processing method based on de-noising of the measured signal, the sensitivity can be improved. The clarity of the captured speech signal was assessed using the Speech Transmission Index for Public Address (STIPA).
Czech name
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Czech description
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Project
<a href="/en/project/VK01030114" target="_blank" >VK01030114: Research into the sensitivity of hollow-core optical fibers on waves in the acoustic spectrum</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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