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Proceedings Paper

Interrogation of fiber Bragg grating sensors using a VCSEL and correlation techniques
Author(s): Cristian Triana; Margarita Varón; Daniel Pastor
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Paper Abstract

We describe a demodulation technique for optical fiber Bragg grating (FBG) sensors based in the utilization of a long wavelength Vertical Cavity Surface Emitting Laser (VCSEL). The identification of the FBG wavelength is performed by sweeping the VCSEL wavelength over the operation range of the sensors and correlating its raising and falling periods in order to automatically determine the initial and final points of the wavelength to time mapping readout. The process is carried out by a simple computational routine, which allows the identification of the FBGs’ spectral position leading to a cost-effective scheme.

Paper Details

Date Published: 28 September 2015
PDF: 4 pages
Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 963473 (28 September 2015); doi: 10.1117/12.2195096
Show Author Affiliations
Cristian Triana, Univ. Nacional de Colombia (Colombia)
Univ. Politécnica de Valenica (Spain)
Margarita Varón, Univ. Nacional de Colombia (Colombia)
Daniel Pastor, Univ. Politécnica de Valencia (Spain)

Published in SPIE Proceedings Vol. 9634:
24th International Conference on Optical Fibre Sensors
Hypolito José Kalinowski; José Luís Fabris; Wojtek J. Bock, Editor(s)

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