镀金光纤光栅温度传感器的低温特性  

LOW TEMPERATURE PROPERTIES OF FIBER BRAGG GRATING TEMPERATURE SENSOR WITH PLATING GOLD

作　　者：郭明金[1] 姜德生[1] 

机构地区：[1]武汉理工大学光纤传感技术与信息处理教育部重点实验室,武汉430070

出　　处：《低温物理学报》2006年第2期138-141,共4页Low Temperature Physical Letters

基　　金：国家自然科学基金(项目编号:50179029)资助的课题.~~

摘　　要：介绍了用相位掩膜方法制作光纤布拉格光栅(FBG)以及镀金的FBG温度传感器.通过实验研究了-70℃～0℃之间的裸FBG和镀金FBG温度传感器的中心波长低温变化特性.实验结果表明裸FBG和镀金FBG温度传感器的中心波长在-70℃～0℃的区间随温度线性变化,重复性较好并且几乎没有迟滞现象.裸光纤布拉格光栅和镀金FBG温度传感器的温度灵敏系数KT分别为0.0101nm/℃和0.0283nm/℃.并且它们的线性拟合度都超过0.999.Fiber Bragg gratings （FBG） prepared in terms of a phase mask technique and the FBG temperature sensor with plating gold were introduced. The center wavelength low temperature properties of the bare Fiber Bragg grating and the FBG temperature sensor with plating gold from - 70℃to 0℃ were researched by the experiment. From the experimental results it could be seen that there is a very good linearity and preferable repeatability between the center wavelength shift of the bare FBG and the FBG temperature sensor with plating gold and the temperature change from -70℃ to 0℃, and there is almost no hysteresis effect. The sensitivities of the bare FBG and the FBG temperature sensor with plating gold Kr are 0. 0101 nm/℃ and 0. 0283 nm/℃ respectively. Their pertinence coefficients are more than 0.999.

关 键 词：导波与光纤光学 光纤布拉格光栅 相位掩膜 封装工艺 低温特性 

分 类 号：O513[理学—低温物理]