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Proceedings Paper

High-resolution absolute-distance measurements using multiple-tunable fiber Bragg gratings
Author(s): E. Luquin; Orlando Frazao; Luis Alberto Ferreira; Francisco M. Araujo; Manuel Lopez-Amo; Jose Luis Santos
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Paper Abstract

We present and demonstrate a high-resolution absolute-distance measurement system based on multiple-wavelength interferometry. The information on a cavity length is obtained by sampling a fringe of its spectral response at different wavelengths. This is achieved by simultaneously tuning multiple fiber Bragg gratings. For a two wavelength system, an unambiguous measurement range of 262 μm was obtained with a resolution of 14.3 nm.

Paper Details

Date Published: 9 June 2004
PDF: 4 pages
Proc. SPIE 5502, Second European Workshop on Optical Fibre Sensors, (9 June 2004); doi: 10.1117/12.566783
Show Author Affiliations
E. Luquin, Univ. Publica de Navarra (Spain)
Orlando Frazao, INESC (Portugal)
Luis Alberto Ferreira, INESC (Portugal)
Francisco M. Araujo, INESC (Portugal)
Manuel Lopez-Amo, Univ. Publica de Navarra (Spain)
Jose Luis Santos, INESC (Portugal)
Univ. do Porto (Portugal)

Published in SPIE Proceedings Vol. 5502:
Second European Workshop on Optical Fibre Sensors
Jose Miguel Lopez-Higuera; Brian Culshaw, Editor(s)

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