| 基于非均匀采样的光纤光栅解调系统 |
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| 引用本文： | 李锦明,杜东海,赖正喜,张少华. 基于非均匀采样的光纤光栅解调系统[J]. 光电子．激光, 2014, 0(12): 2288-2293 |
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| 作者姓名： | 李锦明 杜东海 赖正喜 张少华 |
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| 作者单位： | 中北大学 电子测试国家重点实验室,仪器科学与动态测试教育部重点实 验室,山西 太原 030051;中北大学 电子测试国家重点实验室,仪器科学与动态测试教育部重点实 验室,山西 太原 030051;中北大学 电子测试国家重点实验室,仪器科学与动态测试教育部重点实 验室,山西 太原 030051;中北大学 电子测试国家重点实验室,仪器科学与动态测试教育部重点实 验室,山西 太原 030051 |
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| 基金项目： | 国家自然科学基金(91123036)资助项目 (中北大学 电子测试国家重点实验室,仪器科学与动态测试教育部重点实验室,山西 太原 030051) |
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| 摘 要： | 鉴于重叠多光纤Bragg光栅(FBG)传感器均匀采样时遇到的数据频谱混叠问题, 提出利用扫描周期随 机变化的正弦波实现传感FBG的非均匀采样方法,并在一种基于可调谐F-P滤波器的 FBG解调系统中得到成功应用。实验结果显示,本文方法能够很好避免混叠现 象,并且还能以低于Nyquist采样频率对信号进行采样分析。
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| 关 键 词： | 非均匀采样 重叠多光纤Bragg光栅(FBG) FBG解调 可调谐F-P滤波器 |
| 收稿时间： | 2014-05-12 |
FBG demodulation system with non-uniform sampling |
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| Affiliation: | National Key Laboratory for Electronic Measurement Technology,Key Laboratory of Instrumentation Science & Dynamic Measurement,Ministry of Education of China,No rth University of China,Taiyuan 030051,China;National Key Laboratory for Electronic Measurement Technology,Key Laboratory of Instrumentation Science & Dynamic Measurement,Ministry of Education of China,No rth University of China,Taiyuan 030051,China;National Key Laboratory for Electronic Measurement Technology,Key Laboratory of Instrumentation Science & Dynamic Measurement,Ministry of Education of China,No rth University of China,Taiyuan 030051,China;National Key Laboratory for Electronic Measurement Technology,Key Laboratory of Instrumentation Science & Dynamic Measurement,Ministry of Education of China,No rth University of China,Taiyuan 030051,China |
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| Abstract: | In order to solve the problem of sig nal distortion in the process of uniform sampling complied by the overlapping multiple fiber Bragg gratings (FBGs),a new sampling method is proposed.The new way is non-uniform sampling which is implem ented by the sine wave with random variation cycles.This way of sampling is successfully appl ied to the tunable Fabry-Perot (F-P) filter FBG demodulation system.The experimental resu lts of the FBG demodulation system confirm that the phenomena of signal distortion are successfully solved b y the non-uniform sampling algorithm,the original signal can be sampled by the m easured signal whose frequency is below the Nyquist sampling frequency,and the ba ndwidth of signal sample is also improved. |
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| Keywords: | non-uniform sampling overlapping multiple fiber Bragg gratings (FBGs) FBG dem o dulation tunable F-P filter |
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