| 质心原理在光纤光栅传感波长解调中的应用 |
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| 引用本文： | 巩宪锋,李忠富,王长松,郭转运,吕可诚,李乙钢.质心原理在光纤光栅传感波长解调中的应用[J].北京科技大学学报,2004,26(4):429-432. |
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| 作者姓名： | 巩宪锋 李忠富 王长松 郭转运 吕可诚 李乙钢 |
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| 作者单位： | 1. 北京科技大学机械工程学院,北京,100083
2. 南开大学物理科学学院,天津,300071 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 在光纤光栅传感悬臂梁调谐滤波技术中,峰值法进行波长检测误差大,精度低,测量结果不稳定.针对峰值法的不足提出了一种质心原理方法.该方法利用扫描的光强分布图形的质心检测光纤光栅的波长变化,与传统的峰值法相比可使检测精度提高70倍,大大降低了波长检测误差.
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| 关 键 词： | 质心原理 波长解调 光纤光栅 质心原理 光纤光栅 波长解调 应用 Fiber Grating Sensors Demodulation Principle Centroid 精度提高 质心检测 变化 分布图形 光强 扫描 利用 原理方法 不稳定 测量结果 检测误差 峰值法 |
| 修稿时间： | 2003年8月10日 |
Application of Centroid Principle to Wavelength Demodulation of Fiber Grating Sensors |
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| GONG Xianfeng,LI Zhongfu,WANG Changsong,GUO Zhuanyun,LU Kecheng,LI Yigang
Mechanical Engineering School,University of Science and Technology Beijing,Beijing ,China
Institute of Physics,Nankai University,Tianjin ,China.Application of Centroid Principle to Wavelength Demodulation of Fiber Grating Sensors[J].Journal of University of Science and Technology Beijing,2004,26(4):429-432. |
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| Authors: | GONG Xianfeng LI Zhongfu WANG Changsong GUO Zhuanyun LU Kecheng LI Yigang
Mechanical Engineering School University of Science and Technology Beijing Beijing China
Institute of Physics Nankai University Tianjin China |
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| Institution: | GONG Xianfeng,LI Zhongfu,WANG Changsong,GUO Zhuanyun,LU Kecheng,LI Yigang
Mechanical Engineering School,University of Science and Technology Beijing,Beijing 100083,China
Institute of Physics,Nankai University,Tianjin 300071,China |
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| Abstract: | Among the tunable filter technologies of optical fiber grating sensors, the peak method is an usual way, but it has poor precision and the result is unstable. A centroid principle method was provided, which uses the detection of wavelength variation by the centroid of scanned light intensity distribution curves. Compared with the peak method the accuracy is improved 70 times and the error of the wavelength detection decreases greatly. |
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| Keywords: | centroid principle wavelength demodulation fiber grating |
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