柚子型微结构光纤Bragg光栅温度和应变传感特性研究  

Temperature and strain sensing property of grapefruit microstructure fiber Bragg grating

作　　者：张春书[1] 开桂云[1] 王志[1] 王超[1] 孙婷婷[1] 张伟刚[1] 刘艳格[1] 刘剑飞[1] 袁树忠[1] 董孝义[1] 

机构地区：[1]南开大学现代光学研究所,天津300071

出　　处：《物理学报》2005年第6期2758-2763,共6页Acta Physica Sinica

基　　金：国家973计划项目(批准号:2003CB314906);国家863计划项目(批准号:2002AA313110);国家自然科学基金(批准号:60407005;60137010);南开大学科技创新基金资助的课题.~~

摘　　要：通过对柚子型微结构光纤Bragg光栅的多个反射峰的温度和应变传感特性进行的理论和实验研究,得出柚子型微结构光纤Bragg光栅的反射波长与温度呈二次关系,且理论和实验二者吻合较好;同时发现每个反射峰的温度灵敏度不同.理论分析柚子型微结构光纤Bragg光栅的反射波长与应变呈线性关系,实验得到了该种Bragg光栅的反射波长与应变的线性关系,实验结果与理论分析相吻合.由于微结构光纤光栅反射谱中多个峰对温度和应变等物理量敏感度不一致,这种Bragg光栅更适合应用到多参量传感领域.The temperature and strain sensing property of a grapefruit microstructure fiber (MF) Bragg grating with multi-reflection peaks have been studied. Analysis indicates that the wavelength shift of this grating changes quadratically with the environmental temperature. Experimental results show that different reflection peaks have their individual temperature sensitivities. Furthermore, the relationship between the wavelength shifts and temperature variation has been fitted, which confirms the above analysis. However, theoretical analysis indicates that the wavelength shift have a good linear relationship with the strain change. The relationship between the wavelength shift and strain changes has been fitted through experiment. The inconsistent sensitivity of different reflection peaks for this grating ensures its practical applications in the field of multi-parameter sensing measurement.

关 键 词：微结构光纤 光纤BRAGG光栅 温度传感 应变传感 

分 类 号：TN25[电子电信—物理电子学]