| 利用调谐滤波技术的光纤光栅复用传感器 |
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| 引用本文： | 刘云启,刘志国,郭转运,董孝义,郑建成. 利用调谐滤波技术的光纤光栅复用传感器[J]. 光学学报, 2000, 20(8): 1084-1088 |
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| 作者姓名： | 刘云启 刘志国 郭转运 董孝义 郑建成 |
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| 作者单位： | 1. 南开大学现代光学研究所,天津,300071
2. 香港城市大学电子工程系,香港 |
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| 基金项目： | 国家自然科学基金!(6 98780 0 1)，国家攀登计划资助项目 |
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| 摘 要： | 采用光纤光栅悬臂梁线性调谐技术 ,提出了利用调谐滤波技术对光纤光栅复用传感信号进行检测的方案 ,在分析其基本工作原理的基础上 ,实验研究了其波分复用传感特性 ,传感测量的结果与光谱分析仪直接测量的结果基本一致。传感器的波长分辨率主要取决于系统的最小可探测光功率 ,由于采用了高灵敏度的光电测量系统 ,传感测量的波长分辨率可达 0 .0 0 5nm ,应变分辨率可达 5.7× 10 - 6 。
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| 关 键 词： | 光纤光栅 复用传感 可调谐滤波器 |
| 收稿时间： | 1999-01-02 |
Multiplexed Fiber Bragg Grating Sensor Using Tunable FBG Filter Technique |
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| Liu Yunqi,Liu Zhiguo,Guo Zhuanyun,Dong Xiaoyi,K S Chiang. Multiplexed Fiber Bragg Grating Sensor Using Tunable FBG Filter Technique[J]. Acta Optica Sinica, 2000, 20(8): 1084-1088 |
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| Authors: | Liu Yunqi Liu Zhiguo Guo Zhuanyun Dong Xiaoyi K S Chiang |
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| Abstract: | A scheme of detecting multiplexed signal of fiber Bragg grating (FBG) sensor using cantilever beam tunable filtering technique is presented. The principle of the sensor is analyzed and the wavelength divided multiplex sensing property is demonstrated experimentally. The results of sensing measurement are accord with the resules measured with optical spectrum analyzer. The wavelength resolution of the sensor is mainly determined by the minimal detectable optical power of the system. The wavelength resolution of the measurement is 0.005 nm and strain resolution is 5.7×10-6, due to the high sensitivity photodetection system. |
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| Keywords: | fiber Bragg grating multiplexed sensing tunable filter. |
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