| 一种高分辨率的光纤光栅传感解调技术 |
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| 引用本文： | 关柏鸥,余有龙,葛春风,刘志国,董孝义,谭华耀.一种高分辨率的光纤光栅传感解调技术[J].光学学报,2000,20(11):509-1513. |
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| 作者姓名： | 关柏鸥 余有龙 葛春风 刘志国 董孝义 谭华耀 |
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| 作者单位： | 1. 南开大学现代光学研究所,天津,300071
2. 香港理工大学电机工程系,香港 |
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| 基金项目： | 国家自然科学基金快速反应项目!( 698780 0 7)，国家攀登计划预研项目 |
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| 摘 要： | 报道了一种基于光纤激光器波长扫描寻址的高分辨率的光纤光栅传感解调方案。光纤激光器的扫描寻址过程由微机来控制。微机控制光纤激光器波长扫描的同时，同步采集、处理传感信号，并通过曲线拟合给出传感光栅的中心反射波长值。本解调方案的波长移动分辨率为０．１ｐｍ，可以实现高分辨率的温度及应变测量。
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| 关 键 词： | 光纤光栅 传感器 解调 高分辨率 |
| 收稿时间： | 1999/4/5 |
A Scheme for Demodulation of Fiber Grating Sensors with High Resolution |
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| Guan Baiou,Yu Youlong,Ge Chunfeng,Liu Zhiguo,Dong Xiaoyi,Hwa Yaw Tam.A Scheme for Demodulation of Fiber Grating Sensors with High Resolution[J].Acta Optica Sinica,2000,20(11):509-1513. |
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| Authors: | Guan Baiou Yu Youlong Ge Chunfeng Liu Zhiguo Dong Xiaoyi Hwa Yaw Tam |
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| Abstract: | A novel approach for demodulation of fiber grating sensors with high resolution is proposed based on a tunable fiber laser interrogating the sensing fiber grating. The fiber laser scanning for interrogation is controlled by computer. The computer synchronously performs data gathering and data processing while it controls laser wavelength scanning. The Bragg wavelength of sensing grating is determined by using the Gaussian Newton curve fitting approach. The wavelength shift resolution of this scheme is 0.1 pm, which can be used in the measurement of temperature or strain with high resolution capability. |
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| Keywords: | fiber grating sensor demodulation |
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