| 基于级联长周期光纤光栅的光纤布拉格光栅解调系统 |
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| 引用本文： | 邹红波,梁大开,曾捷,李堃,周怡妃.基于级联长周期光纤光栅的光纤布拉格光栅解调系统[J].南京航空航天大学学报,2011,43(6). |
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| 作者姓名： | 邹红波 梁大开 曾捷 李堃 周怡妃 |
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| 作者单位： | 1. 南京航空航天大学航空宇航学院,南京,210016;三峡大学电气与新能源学院,宜昌,443002
2. 南京航空航天大学航空宇航学院,南京,210016 |
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| 基金项目： | 国家自然科学基金(60907038)资助项目; 江苏省自然科学基金(BK2009370)资助项目; 中国博士后科学基金(20090461116)资助项目; 江苏省博士后科研资助计划(1001010B)资助项目; 611航空科研基金资助项目 |
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| 摘 要： | 提出了一种基于级联长周期光纤光栅的光纤布拉格光栅解调系统.级联长周期光纤光栅作为边沿滤波器,利用它的一个线性区监测单个光纤布拉格光栅传感信号.该系统具有结构简单、价格低等优点,但易受光源抖动及系统其他不稳定因素等带来的系统噪声的影响.为消除系统噪声带来的不利影响,对该系统进行了改进.改进系统利用级联长周期光纤光栅的两个线性区同时监测两个光纤布拉格光栅传感信号.分别用原系统及其改进系统对温度进行监测,实验的温度测量范围为-70～-115℃.原系统的灵敏度为0.49 mV/℃,温度分辨率为0.5℃；改进系统的灵敏度为0.86 mV/℃,温度分辨率为0.3℃.实验结果表明改进系统能有效消除系统噪声,提高系统的精度.
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| 关 键 词： | 级联长周期光纤光栅 光纤布拉格光栅 解调 边沿滤波器 |
FBG Demodulation System Based on Cascaded Long-Period Fiber Grating |
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| Zou Hongbo
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Liang Dakai
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Zeng Jie
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Li Kun
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Zhou Yifei.FBG Demodulation System Based on Cascaded Long-Period Fiber Grating[J].Journal of Nanjing University of Aeronautics & Astronautics,2011,43(6). |
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| Authors: | Zou Hongbo Liang Dakai Zeng Jie Li Kun Zhou Yifei |
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| Institution: | Zou Hongbo1,2,Liang Dakai1,Zeng Jie1,Li Kun1,Zhou Yifei1(1.College of Aerospace Engineering,Nanjing University of Aeronautics &Astronautics,Nanjing,210016,China,2.College of Electric Engineering and Renewable Energy,Three Gorges University,Yichang,443002,China) |
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| Abstract: | A demodulation system of fiber Bragg grating(FBG) based on a cascaded long-period fiber grating(CLPG) is presented.A key interrogating component of this system is CLPG which acts as an edge filter converting wavelength variation into optical power measurement,thus realizing a FBG sensing signal monitoring by one linear region of CLPG.This system has some advantages such as a simple structure and low cost.However,it is inevitably influenced by system noise such as broadband optical source fluctuations,power ... |
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| Keywords: | cascaded long-period fiber grating fiber Bragg grating demodulation edge filter |
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