Fiber Fabry-Perot interferometer sensor for measuring resonances of piezoelectric elements

R.E. Da Silva; R.A. Oliveira; A.A.P. Pohl

doi:10.1117/12.885858

Fiber Fabry-Perot interferometer sensor for measuring resonances of piezoelectric elements

R.E. Da Silva, R.A. Oliveira, A.A.P. Pohl

Research output: Contribution to journal › Conference article › peer-review

Abstract

The development of a fiber extrinsic Fabry-Perot interferometer for measuring vibration amplitude and resonances of piezoelectric elements is reported. The signal demodulation method based on the use of an optical spectrum analyzer allows the measurement of displacements and resonances with high resolution. The technique consists basically in monitoring changes in the intensity or the wavelength of a single interferometric fringe at a point of high sensitivity in the sensor response curve. For sensor calibration, three signal processing techniques were employed. Vibration amplitude measurement with 0.84 nm/V sensitivity and the characterization of the piezo resonance is demonstrated.

Original language	English
Article number	775319
Journal	Proceedings of SPIE - International Society for Optical Engineering
Volume	7753
DOIs	https://doi.org/10.1117/12.885858
Publication status	Published - 17 May 2011

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Copyright 2011 SPIE. One print or electronic copy may be made for personal use only. Systematic reproduction, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited

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10.1117/12.885858

Fiber Fabry-Perot interferometer sensor for measuring resonances of piezoelectric elements
Copyright 2011 SPIE. One print or electronic copy may be made for personal use only. Systematic reproduction, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
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abstract = "The development of a fiber extrinsic Fabry-Perot interferometer for measuring vibration amplitude and resonances of piezoelectric elements is reported. The signal demodulation method based on the use of an optical spectrum analyzer allows the measurement of displacements and resonances with high resolution. The technique consists basically in monitoring changes in the intensity or the wavelength of a single interferometric fringe at a point of high sensitivity in the sensor response curve. For sensor calibration, three signal processing techniques were employed. Vibration amplitude measurement with 0.84 nm/V sensitivity and the characterization of the piezo resonance is demonstrated.",

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Fiber Fabry-Perot interferometer sensor for measuring resonances of piezoelectric elements

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