FBG滤波的级联LPFG温度和折射率传感装置

发布时间：2018-02-25 21:21

本文关键词： 光纤布喇格光栅长周期光纤光栅滤波温度折射率准确度稳定性　出处：《光子学报》2016年01期 　论文类型：期刊论文

【摘要】：利用长周期光纤光栅具有较高的温度、折射率灵敏度,以及光纤布喇格光栅具有较高反射效率的特点,设计了一种基于光纤布啦格光栅滤波的级联长周期光纤光栅温度和折射率传感装置.利用光纤布喇格光栅的高反射率,将级联长周期光纤光栅干涉波峰的局部功率反射到功率计中,实现了温度和折射率的测量.基于信号叠加原理,对光纤布喇格光栅滤波的级联长周期光纤光栅温度和折射率传感方法的可行性进行了分析.将实际测得的功率计示数与温度以及折射率的变化进行二项式拟合,其确定系数分别为0.9990和0.9959,表明该传感方法可用于温度和折射率的精确测量.最后对该装置的稳定性做了一系列的测试,验证了该传感系统具有较高的稳定性.
[Abstract]:The long period fiber grating has the characteristics of high temperature, sensitivity of refractive index and high reflection efficiency of fiber Bragg grating. A cascade long period fiber grating temperature and refractive index sensing device based on fiber Bragg grating filter is designed. The high reflectivity of fiber Bragg grating is used. The local power of the interference wave peak of cascaded long period fiber grating is reflected into the power meter to measure the temperature and refractive index. The feasibility of cascaded long period fiber grating temperature and refractive index sensing method using fiber Bragg grating filter is analyzed. The actual measured power indicator number is fitted with the change of temperature and refractive index. The determination coefficients are 0.9990 and 0.9959, respectively, which indicate that the sensing method can be used to measure the temperature and refractive index accurately. Finally, a series of tests are made on the stability of the device, which proves that the sensor system has high stability.
【作者单位】：宁波大学理学院;宁波大学信息学院;
【基金】：浙江省新苗人才计划项目基金(No.2014R405024)资助~~
【分类号】：TN253

【相似文献】