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Proceedings Paper

Accurate Measurement Of The Voltage-Microdisplacement Correlation Of Piezoelectric Sensor With A Fiber Optic Interferometer
Author(s): Dong Tai-Huo; Pao Cheng-Kang; Lin Dan
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Paper Abstract

A novel method for measuring the voltage-microdisplacement correlation of a piezoelectric sensor has been devised. It is based on the multi-mode fiber-optic interferometry and the variation in the resonant frequency dv which can be affected by changing the cavity length of a laser with a piezoelectric sensor. Then the linearity of the PZT can be measured with a ultra-precision by counting the interfe.rometric fringes shifted. The experimental results have shown that this device permits to detecting the displacement of PZT as small as λ/240 when using a fiber 20m in length. The potential of fiber interferometry in measuring the ultra-microdisplacement is also discussed.

Paper Details

Date Published: 14 October 1987
PDF: 3 pages
Proc. SPIE 0798, Fiber Optic Sensors II, (14 October 1987); doi: 10.1117/12.941125
Show Author Affiliations
Dong Tai-Huo, Zhejiang University (China)
Pao Cheng-Kang, Zhejiang University (China)
Lin Dan, Zhejiang University (China)

Published in SPIE Proceedings Vol. 0798:
Fiber Optic Sensors II
Anna Maria Verga Scheggi, Editor(s)

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