光学
包层模式
加速度计
材料科学
光纤传感器
光纤
振动
包层(金属加工)
保偏光纤
物理
声学
量子力学
冶金
作者
Lang Xie,Binbin Luo,Mingfu Zhao,Ou Deng,Enhua Liu,Peng Liu,Yajie Wang,Lin Zhang
出处
期刊:Optics Letters
[The Optical Society]
日期:2019-12-19
卷期号:45 (1): 125-125
被引量:23
摘要
An orientation-dependent optic-fiber accelerometer based on the excessively tilted fiber grating (ExTFG) inscribed in SM28 fiber is demonstrated, which is based on the optical power demodulation scheme. Without any complicated processing, the cladding mode resonances of the bare ExTFG show high sensitivity to slight perturbation of bending. Due to its excellent azimuth-related bending properties, such a bare ExTFG fixed on a simple cantilever beam has exhibited strong orientation-dependent vibration properties. The experimental results show that a TE mode of the sensor can provide a maximum acceleration sensitivity of 74.14 mV/g at 72 Hz and maximum orientation sensitivity of 9.1 mV/deg while, for a TM mode, a maximum acceleration sensitivity of 57.85 mV/g at 72 Hz and maximum orientation sensitivity of 7.4 mV/deg could be achieved. These unique properties enable the sensor to act as a vector accelerometer for applications in many vibration measurement fields.
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