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Proceedings Paper

Temperature influence of an air conditioner in refractive index measurements using long-period fiber gratings
Author(s): R. Falate; G. R. C. Possetti; R. C. Kamikawachi; J. L. Fabris; H. J. Kalinowski
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Paper Abstract

The influence of temperature in the measurements of surrounding refractive index using long-period fiber gratings is studied for room temperature variations. For temperature changes close to 2°C it is verified wavelength shifts lower than 0.1 nm for the grating immersed in air and as high as 1.1 nm for a hydrocarbon sample whose refractive index is 1.4530. Sensitivity evaluations of long-period fiber gratings and evanescent fiber sensors require a temperature system control that keeps the temperature constant. Otherwise, it should be considered compensation systems that consider not only the temperature changes but also the refractive index and the thermal-optical coefficient of the materials under analysis.

Paper Details

Date Published: 2 July 2007
PDF: 4 pages
Proc. SPIE 6619, Third European Workshop on Optical Fibre Sensors, 66193W (2 July 2007); doi: 10.1117/12.738782
Show Author Affiliations
R. Falate, Univ. Estadual de Ponta Grossa (Brazil)
G. R. C. Possetti, Univ. Tecnológica Federal do Paraná (Brazil)
R. C. Kamikawachi, Univ. Tecnológica Federal do Paraná (Brazil)
J. L. Fabris, Univ. Tecnológica Federal do Paraná (Brazil)
H. J. Kalinowski, Univ. Tecnológica Federal do Paraná (Brazil)


Published in SPIE Proceedings Vol. 6619:
Third European Workshop on Optical Fibre Sensors

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