2 July 2007 Temperature influence of an air conditioner in refractive index measurements using long-period fiber gratings
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Proceedings Volume 6619, Third European Workshop on Optical Fibre Sensors; 66193W (2007) https://doi.org/10.1117/12.738782
Event: Third European Workshop on Optical Fibre Sensors, 2007, Napoli, Italy
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.
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R. Falate, R. Falate, G. R. C. Possetti, G. R. C. Possetti, R. C. Kamikawachi, R. C. Kamikawachi, J. L. Fabris, J. L. Fabris, H. J. Kalinowski, H. J. Kalinowski, } "Temperature influence of an air conditioner in refractive index measurements using long-period fiber gratings", Proc. SPIE 6619, Third European Workshop on Optical Fibre Sensors, 66193W (2 July 2007); doi: 10.1117/12.738782; https://doi.org/10.1117/12.738782
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