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A Polymer Optical Fiber Temperature Sensor Based on Material Features

Authors :
Maria José Pontes
Anselmo Frizera-Neto
Carlos Marques
Arnaldo G. Leal-Junior
Source :
Sensors; Volume 18; Issue 1; Pages: 301, Sensors, Vol 18, Iss 1, p 301 (2018), Sensors (Basel, Switzerland)
Publication Year :
2018
Publisher :
Multidisciplinary Digital Publishing Institute, 2018.

Abstract

This paper presents a polymer optical fiber (POF)-based temperature sensor. The operation principle of the sensor is the variation in the POF mechanical properties with the temperature variation. Such mechanical property variation leads to a variation in the POF output power when a constant stress is applied to the fiber due to the stress-optical effect. The fiber mechanical properties are characterized through a dynamic mechanical analysis, and the output power variation with different temperatures is measured. The stress is applied to the fiber by means of a 180° curvature, and supports are positioned on the fiber to inhibit the variation in its curvature with the temperature variation. Results show that the sensor proposed has a sensitivity of 1.04 × 10−3 °C−1, a linearity of 0.994, and a root mean squared error of 1.48 °C, which indicates a relative error of below 2%, which is lower than the ones obtained for intensity-variation-based temperature sensors. Furthermore, the sensor is able to operate at temperatures up to 110 °C, which is higher than the ones obtained for similar POF sensors in the literature.

Details

Language :
English
ISSN :
14248220
Database :
OpenAIRE
Journal :
Sensors; Volume 18; Issue 1; Pages: 301
Accession number :
edsair.doi.dedup.....a7298332d70428accb33b5ccb04c9062
Full Text :
https://doi.org/10.3390/s18010301