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首页> 美国卫生研究院文献>Sensors (Basel Switzerland) >Hybrid Fiber Optic Sensor Based on the Fabry–Perot Interference Assisted with Fluorescent Material for the Simultaneous Measurement of Temperature and Pressure
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Hybrid Fiber Optic Sensor Based on the Fabry–Perot Interference Assisted with Fluorescent Material for the Simultaneous Measurement of Temperature and Pressure

机译：混合光纤传感器基于法布里-珀罗干涉技术辅以荧光材料可同时测量温度和压力

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摘要

Herein we design a fiber sensor able to simultaneously measure the temperature and the pressure under harsh conditions, such as strong electromagnetic interference and high pressure. It is built on the basis of the fiber-optic Fabry–Perot (F–P) interference and the temperature sensitive mechanism of fluorescent materials. Both halogen lamps and light-emitting diodes (LED) are employed as the excitation light source. The reflected light from the sensor contains the low coherent information of interference cavity and the fluorescent lifetime. This information is independent due to the separate optical path and the different demodulation device. It delivers the messages of pressure and temperature, respectively. It is demonstrated that the sensor achieved pressure measurement at the range of 120–400 KPa at room temperature with a sensitivity of 1.5 nm/KPa. Moreover, the linearity of pressure against the cavity length variation was over 99.9%. In the meantime, a temperature measurement in the range of 25–80 °C, with a sensitivity of 0.0048 ms/°C, was obtained. These experimental results evince that this kind of sensor has a simple configuration, low-cost, and easy fabrication. As such, it can be particularly applied to many fields.
机译：本文中，我们设计了一种光纤传感器，该传感器能够在恶劣的条件下（例如强电磁干扰和高压）同时测量温度和压力。它是基于光纤法布里-珀罗（FP）干涉和荧光材料的温度敏感机制建立的。卤素灯和发光二极管（LED）都被用作激发光源。来自传感器的反射光包含干涉腔和荧光寿命的低相干信息。由于分离的光路和不同的解调设备，该信息是独立的。它分别传递压力和温度信息。结果表明，该传感器在室温下可在120-400 KPa的范围内完成压力测量，灵敏度为1.5 nm / KPa。此外，针对腔体长度变化的压力线性度超过99.9％。同时，获得的温度测量范围为25-80°C，灵敏度为0.0048 ms /°C。这些实验结果表明，这种传感器具有简单的配置，低成本和易于制造的特点。这样，它可以特别地应用于许多领域。

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