| 一种对温度不敏感的光纤布拉格光栅加速度计 |
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| 引用本文： | 李岚.一种对温度不敏感的光纤布拉格光栅加速度计[J].上海电力学院学报,2010(11). |
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| 作者姓名： | 李岚 |
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| 作者单位： | 中国计量学院光电子技术研究所; |
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| 基金项目： | 国家“973”计划资助项目(2010CB327800); 国家自然科学基金资助项目(60807021); 浙江省自然基金资助项目(R1080087) |
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| 摘 要： | 提出了一种新型的基于光纤布拉格光栅(FBG)反射带宽和反射光功率测量的加速度计,其是将单根FBG斜向粘贴在矩形简支梁侧面构成的,通过在简支梁中间粘贴重物感应竖直方向的加速度,通过梁的弯曲改变FBG反射带宽和反射光功率。实验结果表明:FBG的反射带宽具有很好的线性响应,其测量范围可达到8g,因带宽展宽造成FBG的反射率降低,因此反射光功率的线性响应范围只有4g;带宽和功率灵敏度分别为0.4nm/g和4.57μW/g;由于温度仅改变FBG的布拉格波长,而对其反射带宽和光功率几乎没有影响,所以加速度计对温度变化不敏感。
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| 关 键 词： | 光纤布拉格光栅(FBG) 加速度计 简支梁 交叉敏感 |
A temperature-independent fiber Bragg grating accelerometer |
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| LI Lan.A temperature-independent fiber Bragg grating accelerometer[J].Journal of Shanghai University of Electric Power,2010(11). |
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| Authors: | LI Lan |
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| Affiliation: | Institute of Optoelectronic Technology,China Jiliang University,Hangzhou 310018,China |
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| Abstract: | An accelerometer based on the measurement of spectral bandwidth and power of the reflected optical signal from a strain-chirped fiber Bragg grating(FBG) is presented.The FBG is glued in a slanted direction onto the lateral surface of a simply-supported beam around the center.The bandwidth and optical power change with the applied vertical acceleration through beam bending caused by weights which are fixed in the middle of the beam.Experimental results show that bandwidth of the FBG responds to acceleration ... |
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| Keywords: | fiber Bragg gratings(FBGs) accelerometer simply-supported beam cross sensitivity |
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