Optical fibre temperature sensor based on thermochromic liquid crystal
Optical fibre temperature sensor based on thermochromic liquid crystal
复制标题
基于热致变色液晶的光纤温度传感器
DOI：
10.1117/12.2539566
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
He C
中科院分区：
文献类型：
--
作者：
He C
报道了一种在光纤尖端涂覆一层热致变色液晶(TLC)薄膜的光纤温度传感器。使用CCD光谱仪和卤素光源在波长域内进行询问。TLC传感器在检测到的温度范围内(28-46℃)显示出可逆的反射光峰的波长漂移。传感器对温度的响应呈线性关系，温度升高灵敏度为-4.52 nm/°C，温度降低灵敏度为-4.60 nm/°C。在TLC传感器的温度标定实验中，没有发现明显的滞后现象。
An optical fibre temperature sensor modified with coating a thermochromic liquid crystal (TLC) film on the tip of fibre is reported. The interrogation is conducted in the wavelength domain using a CCD spectrometer and halogen light source. The TLC sensor shows a reversible wavelength shift of the reflective light peak in the detected temperature range (28 – 46°C). The response of the sensor to temperature was linear with a sensitivity of -4.52 nm/°C for temperature increasing and -4.60 nm/°C for decreasing. There is no measurable hysteresis in the temperature calibration experiment for TLC sensor.