Sensitivity comparison of acoustic vibration detection methods in underground optical networks

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081731%3A_____%2F25%3A00642155" target="_blank" >RIV/68081731:_____/25:00642155 - isvavai.cz</a>
Result on the web
<a href="https://www.spiedigitallibrary.org/conference-proceedings-of-spie/13698/3072894/Sensitivity-comparison-of-acoustic-vibration-detection-methods-in-underground-optical/10.1117/12.3072894.short" target="_blank" >https://www.spiedigitallibrary.org/conference-proceedings-of-spie/13698/3072894/Sensitivity-comparison-of-acoustic-vibration-detection-methods-in-underground-optical/10.1117/12.3072894.short</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1117/12.3072894" target="_blank" >10.1117/12.3072894</a>

Result language
angličtina
Original language name
Sensitivity comparison of acoustic vibration detection methods in underground optical networks
Original language description
Optical fibers, commonly used in communication networks, can also serve as highly sensitive vibration sensors. This property raises security concerns, as vibrations induced by environmental factors or human activity can be detected and analyzed, potentially enabling unauthorized monitoring. Various sensing techniques leverage different physical principles to interpret these disturbances. In this study, we evaluate and compare the performance of three distinct methods: phase-sensitive OTDR, state of polarization detection, and Michelson interferometry. Presented measurements were conducted on optical fibers deployed along a roadside within a university campus, where we examined how external conditions influence signal behavior. The results provide insights into the feasibility and limitations of these sensing methods in practical scenarios. Our findings contribute to the ongoing development of fiber-based vibration monitoring systems, with potential applications in infrastructure security and environmental sensing.
Czech name
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Czech description
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

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

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