摘要
为了研究镀Ni光纤布拉格光栅(FBG)的温度灵敏度,根据镀NiFBG的特点,分析了镀NiFBG温度变化时的应力应变,从理论上推导出镀NiFBG的温度灵敏度公式并通过实验进行了验证,用理论证明了镀NiFBG的波长漂移、应力和应变与温度变化成线性关系,分析了镀NiFBG的温度灵敏度与镀层厚度的关系。用AN-SYS软件对镀NiFBG在温度变化时的应力应变进行了仿真。理论分析得到镀层厚度为4.56μm的镀NiFBG的温度灵敏度为14.3306pm/℃,实验值为14.113pm/℃。理论、实验和仿真得到了一致的结果。
In order to research the temperature sensitivity of Ni-coated fiber Bragg grating（FBG） sensors, the strains and stresses on the Ni-coated FBG sensors under varied temperature were analyzed. The temperature sensitivity of Ni-coated FBG sensors was deduced in theory and verified by experiment. It was proved that the wave shift and strains/stesses of Ni-coated FBG sensors are proportional to the temperature change. The relationship between plating thickness and temperature sensitivity was analyzed. A finite element analysis software（ANSYS） was used to simulate the stresses and strains on the Ni-coated FBG sensors under varied temperatures. When plating thickness was 4.56 tan,temperature sensitivity was 14. 330 6 pm/℃ in theory and the experiment result was 14.113 pm/℃. The results of theoretical analysis matches the ones form experiments and simulation well.
出处
《光电子．激光》
EI
CAS
CSCD
北大核心
2007年第7期780-784,共5页
Journal of Optoelectronics·Laser
基金
国家"973"计划前期研究专项资助项目(2005CCA04300)
