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Proceedings Paper

Fiber specklegram sensors (FSS) for measuring high frequency mechanical perturbations
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Paper Abstract

In this work, a technique for measuring high frequency micro-vibrations by using non holographic fiber specklegram sensor is experimentally demonstrated. In our setup, a laser source emitting at 632nm is coupled to a structure of Singlemode-Multimode-Singlemode fibers which produce a filtering effect that is used as optical transducer. Mechanical perturbations of controlled amplitude and frequency are applied to the Multimode fiber, which is fastened at the ends to induce vibrations. Perturbations higher than 3 KHz and below one micron are perfectly recovered by the system, which additionally, exhibits a linear response. Due to the low cost and the simplicity of the technique, it becomes an interesting method for the implementation of fiber sensors in a wide range of engineering applications.

Paper Details

Date Published: 18 November 2013
PDF: 8 pages
Proc. SPIE 8785, 8th Iberoamerican Optics Meeting and 11th Latin American Meeting on Optics, Lasers, and Applications, 8785BH (18 November 2013); doi: 10.1117/12.2026075
Show Author Affiliations
Alejandro Hoyos, Politécnico Colombiano Jaime Isaza Cadavid (Colombia)
Nelson Darío Gómez, Instituto Tecnológico Metropolitano (Colombia)
Jorge A. Gómez, Politécnico Colombiano Jaime Isaza Cadavid (Colombia)

Published in SPIE Proceedings Vol. 8785:
8th Iberoamerican Optics Meeting and 11th Latin American Meeting on Optics, Lasers, and Applications
Manuel Filipe P. C. Martins Costa, Editor(s)

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