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Multichannel fiber-optic interferometric sensor for measurements of temperature and vibrations in composite materials

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2 Author(s)
Garcia-Souto, J.A. ; Optoelectron. & Laser Technol. Group, Univ. Carlos III de Madrid, Madrid, Spain ; Rivera, H.L.

A multichannel fiber-optic interferometric sensor for measuring temperature and vibrations in composite materials is presented. The fiber-optic sensor is designed for simultaneous monitoring of all channels with optical fibers embedded in the structure. The multichannel arrangement with a common reference path and the transducer principle, based in optical phase measurements, provide a high sensitivity sensing of two parameters, their spatial distributions, and the rules of calibration. Our results show that the temperature gradient and the propagation of vibrations along a carbon fiber board are obtained at the same time using the proposed technique as well as their dynamic behavior.

Published in:

Selected Topics in Quantum Electronics, IEEE Journal of  (Volume:6 ,  Issue: 5 )

Date of Publication:

Sept.-Oct. 2000

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