| 具有温度补偿的LPFG功率解调系统的设计与实现 |
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| 引用本文： | 王彦,梁大开,胡兴柳,汪诚伟,方挺,李丹.具有温度补偿的LPFG功率解调系统的设计与实现[J].光电子．激光,2013(6):1048-1052. |
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| 作者姓名： | 王彦 梁大开 胡兴柳 汪诚伟 方挺 李丹 |
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| 作者单位： | 安徽工业大学 电气信息学院,安徽 马鞍山 243000;南京航空航天大学 飞行器结构 力学与控制教育部重点实验室,江苏 南京 210016;安徽工业大学 电气信息学院,安徽 马鞍山 243000;安徽工业大学 电气信息学院,安徽 马鞍山 243000;安徽工业大学 电气信息学院,安徽 马鞍山 243000;安徽工业大学 电气信息学院,安徽 马鞍山 243000 |
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| 基金项目： | 国家自然科学基金(51007002,61201109,51275239)和安徽省高校省级科学研究重点项目(K J2013A055)资助项目 (1.安徽工业大学 电气信息学院,安徽 马鞍山 243000; 2.南京航空航天大学 飞行器结构力学与控制教育部重点实验室,江苏 南京 210016) |
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| 摘 要： | 传统的利用光纤Bragg光栅(FBG)反射光作为长周期 光纤光栅(LPFG)入射光的解调方式,无法避免温度的影响。本文提出了一种具有温度补偿功 能的LPFG功率解调方案,将FBG的Bragg波长由压电陶瓷(PZT)的驱动电压控制,使得FBG谐振 波长始终跟随LPFG谐振波长, 以此抵消温度对传统功率解调中的影响。这种解调方案适用于LPFG透射光谱随物理量变化谱 形也发生变化的传感,如微 弯、横向负载等特性。利用本系统对LPFG的横向负载特性进行试验,结果表明,采用此解调 方案获得的实验数据具有与 光谱仪相同的功率变化趋势,能够始终监测LPFG的谐振峰幅值,实现温度补偿的功率解调, 更适合于动态解调。对LPFG 的温度特性进行功率解调实验,结果也验证了解调系统具有温度补偿功能。
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| 关 键 词： | 长周期光纤光栅(LPFG) 功率解调 温度补偿 压电陶瓷(PZT) |
| 收稿时间： | 2012/12/5 0:00:00 |
Design and realization of LPFG power demodulation syst em with temperature compensation |
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| WANG Yan,LIANG Da-kai,HU Xing-liu,WANG Cheng -wei,FANG Ting and LI Dan.Design and realization of LPFG power demodulation syst em with temperature compensation[J].Journal of Optoelectronics·laser,2013(6):1048-1052. |
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| Authors: | WANG Yan LIANG Da-kai HU Xing-liu WANG Cheng -wei FANG Ting and LI Dan |
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| Affiliation: | School of Electrical Engineering and Information,Anhui University of Technol ogy,Maanshan 243000,China;Key Laboratory of Veh icle Structure and Control of Education Ministry of China,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;School of Electrical Engineering and Information,Anhui University of Technol ogy,Maanshan 243000,China;School of Electrical Engineering and Information,Anhui University of Technol ogy,Maanshan 243000,China;School of Electrical Engineering and Information,Anhui University of Technol ogy,Maanshan 243000,China;School of Electrical Engineering and Information,Anhui University of Technol ogy,Maanshan 243000,China |
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| Abstract: | The traditional power demodulation method uses fiber Bragg grating (FBG) reflect ed light as the long period fiber grating (LPFG) incident light,which is unable to avoid the influence of the te m perature.This paper puts forward a kind of power demodulation scheme which could compensate the environment temperature of the LP FG,and the Bragg wavelength will be controlled by PZT driving voltage,making the FBG resonance wavelength always follow LPFG trans mission resonance wavelength,which could counteract the influence of the temperature.This demodulation scheme is suitable f or physical quantity measurement,in which the LPFG transmission spectrum shape changes,such as micro bending,lateral load ch aracteristics.From the LPFG transverse load characteristic test by this system,the results show that it has the same trend with optical spectrometer analyzer,it can always monitor LPFG resonant peak amplitude and realize the power demodulation with tem perature compensation,and the method is more suitable for dynamic demodulation.From the temperature characteristics of LPFG power demodulation experiments,it is verified that the demodulation system has the function of temperature compensation. |
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