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

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.

Publication DOI: https://doi.org/10.1117/12.885858
Divisions: College of Engineering & Physical Sciences > Aston Institute of Photonics Technology (AIPT)
College of Engineering & Physical Sciences
Additional Information: 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
Full Text Link: http://www.scop ... tnerID=MN8TOARS
Related URLs: https://www.spi ... 5858.full?SSO=1 (Publisher URL)
PURE Output Type: Conference article
Published Date: 2011-05-17
Authors: Da Silva, R.E. (ORCID Profile 0000-0002-6271-0361)
Oliveira, R.A.
Pohl, A.A.P.

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