| 用纤内Bragg光栅进行动态应变测量的研究 |
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| 引用本文： | 陈晓梅,李新良,曾吾,薛景峰. 用纤内Bragg光栅进行动态应变测量的研究[J]. 航空计测技术, 2002, 22(6): 3-7 |
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| 作者姓名： | 陈晓梅 李新良 曾吾 薛景峰 |
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| 作者单位： | 中国航空长城计量测试技术研究所 北京100095(陈晓梅，李新良，曾吾)，中国航空长城计量测试技术研究所 北京100095(薛景峰) |
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| 基金项目： | 航空科学基金资助项目 (0 1I4 4 0 0 1) |
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| 摘 要： | 描述了用纤内Bragg光栅进行动态应变测量研究的意义，原理和方法，提出了两种用纤内Bragg光栅动态应变测量时进行Bragg波长偏移量的解调方法；光干涉相位检测Bragg光栅反射波长偏移的解调方法和用DWDM密集波分复用器解调Bragg波长的方法，前者适用于高频宽带动态应变测量，后者适用于有限频率或中等频率响应的动态应变测量。
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| 关 键 词： | 纤内Bragg光栅 动态应变测量 工作原理 |
| 文章编号： | 1002-6061(2002)06-0003-05 |
| 修稿时间： | 2002-07-05 |
Investigation of Fiber Bragg Grating for Dynamic Strain Measurement |
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| Chen Xiao mei,Li Xin liang,Zeng Wu,Xue Jing feng. Investigation of Fiber Bragg Grating for Dynamic Strain Measurement[J]. Aviation Metrology & Measurement Technology, 2002, 22(6): 3-7 |
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| Authors: | Chen Xiao mei Li Xin liang Zeng Wu Xue Jing feng |
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| Abstract: | The sense,priciple and method of using the fiber Bragg grating for dynamic strain measurement are described in this paper. Two methods of using the fiber Bragg grating for wavelength shift demodulation are proposed when it is employed in the dynamic strain measurement. One is based on the fiber Mach Zehnder interferometry which is the dynamic phase demodulation suitable for high frequency bandwidth dynamic sensing and measurement and the other is the direct detection of the Bragg wavelength by DWDM with limited frequency bandwidth or medium frequency responding. |
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| Keywords: | FBG sensing dynamic strain measurement wavelength demodulation |
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