Comparing Sensitivity of Methods to Measure Acoustic Vibrations in Optical Fibers

0580609 - ÚPT 2024 RIV US eng C - Conference Paper (international conference)
Čížek, Martin - Číp, Ondřej - Mokrý, O. - Dejdar, P. - Münster, P. - Horváth, T.
Comparing Sensitivity of Methods to Measure Acoustic Vibrations in Optical Fibers.
2023 IEEE SENSORS. New York: IEEE, 2023, (2023). ISBN 979-8-3503-0387-2. ISSN 1930-0395.
[IEEE SENSORS 2023 /22./. Vienna (AT), 29.10.2023-01.11.2023]
R&D Projects: GA MV(CZ) VJ01010035; GA MŠMT(CZ) EF16_026/0008460
Institutional support: RVO:68081731
Keywords : optical fibers * vibration sensing * methods * sensitivity * comparison
OECD category: Optics (including laser optics and quantum optics)
https://ieeexplore.ieee.org/document/10325010

Common optical fibers are sensitive to mechanical vibrations. When left exposed in important infrastructures, they can potentially compromise security. By utilizing measurement techniques rooted in various physical principles, these fibers can be transformed into functioning microphones, enabling unauthorized eavesdropping activities. In our research, we concentrate on assessing and comparing the sensitivity of different measurement methods, specifically the Φ-OTDR, state of polarization changes detector, and Michelson interferometer, within the controlled conditions of an anechoic chamber.
Permanent Link: https://hdl.handle.net/11104/0349412