| 基于温度补偿高双折射光纤环镜的边缘滤波解调方法 |
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| 引用本文： | 黄勇林,代森.基于温度补偿高双折射光纤环镜的边缘滤波解调方法[J].南京邮电大学学报(自然科学版),2009,29(3):64-66,72. |
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| 作者姓名： | 黄勇林 代森 |
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| 作者单位： | 南京邮电大学,光电工程学院,江苏,南京,210003 |
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| 基金项目： | 南京邮电大学引进人才基金 |
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| 摘 要： | 提出了一种光纤光栅传感解调新方法.系统由1个3dB耦合器、1个传感光纤布喇格光栅、1个双折射光纤环镜和1个探测器构成,高双折射光纤环镜作为边缘滤波器.光纤光栅波长的线性解调带宽为3.6nm.对双折射光纤环镜的温度补偿进行了实验研究,实验表明,封装的高双折射光纤环镜能够补偿高双折射光纤环镜的温度漂移.补偿前的高双折射光纤环镜波长随温度漂移为2.3 nm/℃,补偿后的双折射光纤环镜波长随温度漂移为0.005 nm/℃,远小于未补偿的双折射光纤环镜波长随温度漂移.
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| 关 键 词： | 光纤传感技术 边缘滤波解调 高双折射光纤 Sagnac环镜 温度补偿 |
A Method of Edge Filter Demodulation by Using Temperature Compensation for HBF Sagnac LM |
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| HUANG Yong-lin,DAI Sen.A Method of Edge Filter Demodulation by Using Temperature Compensation for HBF Sagnac LM[J].Journal of Nanjing University of Posts and Telecommunications,2009,29(3):64-66,72. |
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| Authors: | HUANG Yong-lin DAI Sen |
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| Institution: | HUANG Yong-lin,DAI Sen College of Optoelectronic Engineering,Nanjing University of Posts , Telecommunications,Nanjing 210003,China |
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| Abstract: | A novel method of demodulation for fiber Bragg grating(FBG)sensor is presented.The system consists of a 3dB coupler,a sensing FBG,a HBF Sagnac LM and a photo-detector,in which the HBF Sagnac LM is used as the edge filter.Linear demodulation bandwith of Bragg fiber grating is about 3.6 nm.The temperature compensation for HBF Sagnac LM is also studied.The experimental results demonstrated that packaged HBF can compensate the tenperature shit of the HBF Sagnac LM filter.The shift of wavelength for an uncompens... |
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| Keywords: | fiber sensing technology edge filter demodulation HBF Sagnac loop mirror temperature compensation |
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