| FIR滤波法改善光纤布喇格光栅传感系统性能 |
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| 引用本文： | 吴薇,刘辛,陈婷.FIR滤波法改善光纤布喇格光栅传感系统性能[J].光电子技术,2008,28(2). |
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| 作者姓名： | 吴薇 刘辛 陈婷 |
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| 作者单位： | 武汉理工大学理学院物理系,武汉,430070;武汉通信指挥学院,武汉,430010 |
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| 摘 要： | 光纤光栅的波长移位检测是光纤光栅传感实用化的关键技术之一.现有的波长检测方法其波长探测精度受到光噪声及有害干涉信号的限制.采用可调谐窄带光源法实现波长检测,并使用数字滤波器技术降低系统中的有害干涉信号.数值模拟结果和实验结果表明,在光纤布拉格光栅传感系统的波长检测过程中采用FIR滤波器可提高系统信噪比和波长测量精度,有效改善系统性能.
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| 关 键 词： | 有限冲激响应滤波器 光纤布喇格光栅 波长检测 |
FIR Filter for Improving the Performance of Fiber Bragg Grating Sensor System |
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| WU Wei,LIU Xin,CHEN Ting.FIR Filter for Improving the Performance of Fiber Bragg Grating Sensor System[J].Optoelectronic Technology,2008,28(2). |
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| Authors: | WU Wei LIU Xin CHEN Ting |
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| Affiliation: | WU Wei1,LIU Xin1,CHEN Ting2(1.School of Science,Wuhan University of Technology,Wuhan 430070,CHN,2.Department of Mathematics,Wuhan Communication School,Wuhan 430010,CHN) |
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| Abstract: | Wavelength-shift detection is the key technology of fiber grating sensor.The measurement accuracy of the existing wavelength-shift detection methods is limited by light noise and harmful interferometric signal.The method of tunable narrow-band light source is adopted to realize wavelength-shift detection,and digital filter is introduced to reduce the effect of harmful interferometric signal.The result of numerical simulation and experiment shows that applying FIR filter into wavelength detection could enhan... |
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| Keywords: | FIR filter FBG wavelength-shift detection |
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