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Proceedings Paper

Fiber Bragg Grating vibration sensor with DFB laser diode
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Paper Abstract

The Fiber Bragg Grating (FBG) sensors are nowadays used in many applications. Thanks to its quite big sensitivity to a surrounding environment, they can be used for sensing of temperature, strain, vibration or pressure. A fiber Bragg grating vibration sensor, which is interrogated by a distributed feedback laser diode (DFB) is demonstrated in this article. The system is based on the intensity modulation of the narrow spectral bandwidth of the DFB laser, when the reflection spectrum of the FBG sensor is shifted due to the strain that is applied on it in form of vibrations caused by acoustic wave pressure from loud speaker. The sensor’s response in frequency domain and strain is measured; also the factor of sensor pre-strain impact on its sensitivity is discussed.

Paper Details

Date Published: 18 December 2012
PDF: 9 pages
Proc. SPIE 8697, 18th Czech-Polish-Slovak Optical Conference on Wave and Quantum Aspects of Contemporary Optics, 86971P (18 December 2012); doi: 10.1117/12.2010467
Show Author Affiliations
Petr Siska, VSB-Technical Univ. of Ostrava (Czech Republic)
Martin Brozovic, VSB-Technical Univ. of Ostrava (Czech Republic)
Jakub Cubik, VSB-Technical Univ. of Ostrava (Czech Republic)
Stanislav Kepak, VSB-Technical Univ. of Ostrava (Czech Republic)
Jan Vitasek, VSB-Technical Univ. of Ostrava (Czech Republic)
Petr Koudelka, VSB-Technical Univ. of Ostrava (Czech Republic)
Jan Latal, VSB-Technical Univ. of Ostrava (Czech Republic)
Vladimir Vasinek, VSB-Technical Univ. of Ostrava (Czech Republic)


Published in SPIE Proceedings Vol. 8697:
18th Czech-Polish-Slovak Optical Conference on Wave and Quantum Aspects of Contemporary Optics
Jan Peřina; Libor Nozka; Miroslav Hrabovský; Dagmar Senderáková; Waclaw Urbańczyk; Ondrej Haderka; Libor Nožka, Editor(s)

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