单光纤光栅的温度、压力双参量测量分析  

Temperature and pressure dual-parameter measurement and analysis with single fiber Bragg grating

作　　者：赵玲君[1] 余震虹[1] 鱼瑛[1] 马仁坤[1] 

机构地区：[1]江南大学通信与控制工程学院,江苏无锡214122

出　　处：《量子电子学报》2010年第4期503-507,共5页Chinese Journal of Quantum Electronics

摘　　要：介绍了一种以悬臂梁为基底,单光纤光栅为传感元件,测量温度和压力的方法。分析了温度和波长的非线生关系对测量结果的影响,给出了布拉格共振波长与温度的线性及非线性的适用范围。光纤光栅的裸光栅部分和预应变部分波长与温度的线性适用范围分别为:-11.2℃～89℃,22.5℃～62.5℃。在此测量范围内,温度和压力响应曲线具有良好的线性。相应的压力灵敏度系数和温度灵敏度系数分别为:0 nm/N,0.4082 nm/N,0.0128 nm/℃,0.1346 nm/℃。结果表明,该方法简单易行,为温度和压力的实际测量提供了便利。A temperature and pressure measurement method is introduced, which is based on a cantilever with single fiber Bragg grating as the sensing element. The non-linear relationship of measurement result between temperature and wavelength is analyzed. Then the linear and nonlinear application scope of reflection wavelength and temperature is given. The linear application scope of wavelength and temperature of bare grating part and pre-strain part is -11.2 ℃ -89 ℃ and 22.5 ℃ -62.5℃. Linear responds to pressure and temperature are achieved in the measurable ranges. The measured pressure sensitivity coefficient and temperature sensitivity coefficient is 0 nm/N, 0.4082 nm/N, 0.0128 nm/ ℃ and 0.1346 nm/ ℃. The result shows that the method is simple and it makes the actual measurement of temperature and pressure facilitated.

关 键 词：纤维与波导光学 双参量测量 光纤光栅 等强度悬臂梁 交叉敏感 

分 类 号：TN253[电子电信—物理电子学]