High-resolution absolute-distance measurements using multiple-tunable fiber Bragg gratings

E. Luquin; Orlando Frazao; Luis Alberto Ferreira; Francisco M. Araujo; Manuel Lopez-Amo; Jose Luis Santos

doi:10.1117/12.566783

9 June 2004 High-resolution absolute-distance measurements using multiple-tunable fiber Bragg gratings

E. Luquin, Orlando Frazao, Luis Alberto Ferreira, Francisco M. Araujo, Manuel Lopez-Amo, Jose Luis Santos

Proceedings Volume 5502, Second European Workshop on Optical Fibre Sensors; (2004) https://doi.org/10.1117/12.566783
Event: Second European Workshop on Optical Fibre Sensors, 2004, Santander, Spain

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.

Citation Download Citation

E. Luquin, Orlando Frazao, Luis Alberto Ferreira, Francisco M. Araujo, Manuel Lopez-Amo, and Jose Luis Santos "High-resolution absolute-distance measurements using multiple-tunable fiber Bragg gratings", Proc. SPIE 5502, Second European Workshop on Optical Fibre Sensors, (9 June 2004); https://doi.org/10.1117/12.566783

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