论文信息 - Temperature influence of an air conditioner in refractive index measurements using long-period fiber gratings

Temperature influence of an air conditioner in refractive index measurements using long-period fiber gratings

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.

Hypolito José Kalinowski | Gustavo R. C. Possetti | Ricardo C. Kamikawachi | José Luís Fabris | Rosane Falate

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