| 应用平衡双光纤光栅动态解调技术测量应力的研究 |
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| 引用本文： | 励强华,李俊庆,李淳飞.应用平衡双光纤光栅动态解调技术测量应力的研究[J].光学学报,2003,23(10):196-1199. |
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| 作者姓名： | 励强华 李俊庆 李淳飞 |
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| 作者单位： | 哈尔滨工业大学应用物理系,哈尔滨,150001 |
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| 摘 要： | 报道了一种基于解调技术使用双光纤光栅测量张力的方法。在外界拉力下一个光纤布拉格光栅反射波长的漂移被转变成从另一个被压电陶瓷片调制的光栅反射的光脉冲间隔的变化。实验表明，当测量一个40N以内的力时，测量精度可达到2．5mN。
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| 关 键 词： | 应力测量 平衡双光纤光栅 动态解调 光纤布拉格光栅 压电陶瓷片调制 光纤传感器 |
| 收稿时间： | 2002/8/5 |
Study on Strain Measurement Using Dynamic Demodulation Technique with Two Fiber Gratings |
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| Li Qianghua,Li Junqing,Li,Chunfei.Study on Strain Measurement Using Dynamic Demodulation Technique with Two Fiber Gratings[J].Acta Optica Sinica,2003,23(10):196-1199. |
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| Authors: | Li Qianghua Li Junqing Li Chunfei |
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| Abstract: | Based on dynamic demodulation technique, a method of strain measurement using two fiber Bragg gratings is reported. The shift of reflective wavelength of one FBG under external strain is translated into a change in time interval of the optical pulse from another FBG drived by a PZT plate. Experiment demonstrates that the measurement accuracy can reach 2.5 mN with the range of 0～40 N. |
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| Keywords: | fiber Bragg grating sensor dynamic demodulation modulation with PZT |
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