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首页> 外文期刊>Karbala International Journal of Modern Science >Fabrication and characterization of multimode optical fiber sensor for chemical temperature monitoring using optical time domain reflectometer
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Fabrication and characterization of multimode optical fiber sensor for chemical temperature monitoring using optical time domain reflectometer

机译：使用光时域反射仪的化学温度监测多模光纤传感器的制作与表征

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摘要

In this work, the optical fiber sensor system to measure the optical loss due to temperature variation of gasoline and toluene was papered. The optical fiber sensor was characterized using optical time domain reflectometer (OTDR). The sensor was a 50?cm multimode fiber with about 1–3?cm at its central region being partially unclad. The partial uncladding was carried out using chemical etching technique. The optical loss of sensor was measured when unclad part exposed to gasoline and toluene respectively at different temperature ranging from 25?°C to 60?°C. The optical loss of sensor increases in a step drop of OTDR trace as the temperature is increased. The rate of optical loss was estimated to be 0.01576?dB/°C and 0.02212?dB/°C for gasoline and toluene respectively.
机译：在这项工作中，提出了一种用于测量由于汽油和甲苯的温度变化而引起的光损耗的光纤传感器系统。使用光时域反射仪（OTDR）对光纤传感器进行了表征。传感器是50？cm多模光纤，其中心区域约有1-3？cm部分未覆盖。使用化学蚀刻技术进行部分脱层。当未覆盖部分分别在25°C至60°C的不同温度下暴露于汽油和甲苯时，测量传感器的光学损耗。随着温度的升高，传感器的光学损耗会随着OTDR迹线的阶跃下降而增加。汽油和甲苯的光损耗率分别估计为0.01576？dB /°C和0.02212？dB /°C。

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