A Polymer Optical Fiber Temperature Sensor Based on Material Features.
A Polymer Optical Fiber Temperature Sensor Based on Material Features.
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DOI：
10.3390/s18010301
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发表时间：
2018-01-19
期刊：
影响因子：
--
通讯作者：
Pontes MJ
中科院分区：
文献类型：
--
作者：
Leal-Junior A;Frizera-Netoc A;Marques C;Pontes MJ
介绍了一种基于聚合物光纤的温度传感器。该传感器的工作原理是POF的力学性能随温度的变化而变化。当由于应力-光学效应向光纤施加恒定应力时，这种机械特性变化导致POF输出功率的变化。通过动态力学分析对光纤的力学性能进行了表征，并测量了输出功率随温度的变化。通过180°曲率将应力施加到光纤上，并在光纤上放置支撑件以抑制其曲率随温度变化的变化。结果表明，该传感器的灵敏度为1.0 4×10−3°C−1，线性度为0.994，均方根误差为1.4 8°C，相对误差小于2%，低于基于强度变化的温度传感器。此外，该传感器能够在高达110°C的温度下工作，高于文献中同类POF传感器的工作温度。
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.
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