| 双膜片结构光纤光栅地震检波器低频特性的研究 |
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| 引用本文： | 李学成.双膜片结构光纤光栅地震检波器低频特性的研究[J].光电子．激光,2010(4):529-532. |
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| 作者姓名： | 李学成 |
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| 作者单位： | 兰州大学物理科学与技术学院;中国科学院半导体研究所光电系统实验室; |
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| 基金项目： | 国家“863”计划资助项目(2009AA11Z212); 中国科学院知识创新工程青年人才领域前沿资助项目(ISCAS2008T05) |
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| 摘 要： | 提出了一种双膜片式的光纤光栅(FBG)地震检波器,此结构有效限制了检波器横向响应。对该检波器的纵向加速度灵敏度和幅频特性进行了理论分析,并指出了影响这种检波器纵向加速度灵敏度的因素。实验结果表明,该种检波器在5～200Hz频率范围内频响平坦,纵向加速度灵敏度为24.3pm/g,谐振峰在900Hz附近,与理论计算较好的吻合。
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| 关 键 词： | 光纤光栅(FBG) 地震检波器 幅频特性 |
Study on low-frequency characteristic of double-diaphragm fiber Bragg grating geophone |
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| LI Xue-cheng.Study on low-frequency characteristic of double-diaphragm fiber Bragg grating geophone[J].Journal of Optoelectronics·laser,2010(4):529-532. |
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| Authors: | LI Xue-cheng |
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| Affiliation: | LI Xue-cheng1,2,LIU Su1,ZHANG Wen-tao2,ZHANG Fa-xiang2,LI Fang2,LIU Yu-liang2(1.School of physical Science , Technology,Lanzhou University,Lanzhou 730000,China,Optoelectronic System Laboratory,Institute of Semiconductors,Chinese Academy of Science,Beijing 100083,China) |
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| Abstract: | A novel fiber Bragg grating(FBG) geophone based on double-diaphragm is presented in this paper.The double-diaphragm structure effectively limits transverse vibration of the FBG geophone.The important parameters such as longitudinal acceleration sensitivity and amplitude-frequency response function of the FBG geophone are analyzed theoretically.In addition,we pointed out the factors that affect the longitudinal acceleration sensitivity of the FBG geophone.The experimental results show that the frequency resp... |
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| Keywords: | fiber Bragg grating(FBG) geophone amplitude-frequency characteristic |
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