An In-Line Fiber Optic Fabry-Perot Sensor for High-Temperature Vibration Measurement
An In-Line Fiber Optic Fabry-Perot Sensor for High-Temperature Vibration Measurement
复制标题
用于高温振动测量的直列光纤法布里-珀罗传感器
DOI：
10.3390/mi11030252
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发表时间：
2020-03-01
期刊：
影响因子：
3.4
通讯作者：
Xiong, Jijun
中科院分区：
文献类型：
--
作者：
Chen, Dong;Qian, Jiang;Xiong, Jijun
提出了一种用于高温振动测量的直列光纤法布里-珀罗（FP）传感器，并进行了实验验证。我们在单模光纤（SMFs）上通过融合构建了FP腔和质量，并将它们一起插入空心硅玻璃管（HST）中形成振动传感器。该传感器径向尺寸小于500 μ m，采用全硅结构，具有在高温环境下测量振动的前景。在我们的测试中，传感器的共振频率为165 Hz。传感器系统的电压灵敏度约为11.57 mV/g，非线性约为2.06%。当温度低于500℃时，传感器可以正常工作，相位偏移点随温度的漂移为0.84 pm/℃。
An in-line fiber optic Fabry-Perot (FP) sensor for high-temperature vibration measurement is proposed and experimentally demonstrated in this paper. We constructed an FP cavity and a mass on single-mode fibers (SMFs) by fusion, and together they were inserted into a hollow silica glass tube (HST) to form a vibration sensor. The radial dimension of the sensor was less than 500 mu m. With its all-silica structure, the sensor has the prospect of measuring vibration in high-temperature environments. In our test, the sensor had a resonance frequency of 165 Hz. The voltage sensitivity of the sensor system was about 11.57 mV/g and the nonlinearity was about 2.06%. The sensor could work normally when the temperature was below 500 degrees C, and the drift of the phase offset point with temperature was 0.84 pm/degrees C.