Analysis of the detection materials as resonant pads for attaching the measuring arm of the interferometer when sensing mechanical vibrations

Jan Nedoma; Marcel Fajkus; Radek Martinek; Ondrej Zboril; Lukas Bednarek; Martin Novak; Karel Witas; Vladimir Vasinek

doi:10.1117/12.2257321

16 May 2017 Analysis of the detection materials as resonant pads for attaching the measuring arm of the interferometer when sensing mechanical vibrations

Jan Nedoma, Marcel Fajkus, Radek Martinek, Ondrej Zboril, Lukas Bednarek, Martin Novak, Karel Witas, Vladimir Vasinek

Author Affiliations +

Proceedings Volume 10231, Optical Sensors 2017; 1023119 (2017) https://doi.org/10.1117/12.2257321
Event: SPIE Optics + Optoelectronics, 2017, Prague, Czech Republic

Abstract

Fiber-optic sensors (FOS), today among the most widespread measuring sensors and during various types of measuring, are irreplaceable. Among the distinctive features include immunity to electromagnetic interference, passivity regarding power supply and high sensitivity. One of the representatives FOS is the interferometric sensors working on the principle of interference of light. Authors of this article focused on the analysis of the detection material as resonant pads for attaching the measuring arm of the interferometer when sensing mechanical vibrations (low frequencies). A typical example is the use of interferometer sensors in automobile traffic while sensing a vibration response from the roadway while passing the cars. For analysis was used sensor with Mach-Zehnder interferometer. Defined were different detection materials about different size and thickness. We analyzed the influence on the sensitivity (amplitude response) of the interferometer. Based on the results we have defined the best material for sensing mechanical vibrations. The signal was processed by applications created in LabView development environment. The results were verified by repeated testing in laboratory conditions.

Citation Download Citation

Jan Nedoma, Marcel Fajkus, Radek Martinek, Ondrej Zboril, Lukas Bednarek, Martin Novak, Karel Witas, and Vladimir Vasinek "Analysis of the detection materials as resonant pads for attaching the measuring arm of the interferometer when sensing mechanical vibrations", Proc. SPIE 10231, Optical Sensors 2017, 1023119 (16 May 2017); https://doi.org/10.1117/12.2257321

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