镀镍过程对光纤Bragg光栅中心波长及传感特性的影响  

Influence of the Nickel Plating Process on Central Wavelength and Sensing Characteristics of the Coated Fiber Bragg Grating

作　　者：赵诚[1] 李玉龙[1] 姜智超[1] 

机构地区：[1]南昌大学机电工程学院机器人及焊接自动化重点实验室,南昌330031

出　　处：《传感技术学报》2013年第12期1666-1670,共5页Chinese Journal of Sensors and Actuators

基　　金：国家自然科学基金项目(51265035);教育部留学回国人员科研启动基金项目;江西省自然科学基金项目(20132BAB206024);江西省教育厅科技项目(GJJ13064)

摘　　要：光纤Bragg光栅（FBG）作为传感及信息传输器件，嵌入到金属中可获得光纤智能材料或结构。为了对FBG进行适当的增敏和保护封装，以化学镀加电镀的方法实现了FBG的有效封装，讨论了金属化过程中FBG中心波长漂移情况及金属化前后FBG反射谱变化情况，并对金属化后的FBG在外界温度为30℃～80℃进行了温度传感试验。结果表明：FBG在电镀镍过程中受到粒子沉积压应力作用，其中心波长减小，且减小速率先快后慢；镀镍层厚度为1．3mm和1．0mm的FBG的温度灵敏度分别为19．11pm/℃和18．4pm／℃。Fiber Bragg grating（FBG）as one of the important elements for the sensing and information transfer in the fiber smart materials or structures. A FBG should be well protected, and the sensitivity of which should be enhanced before application. In this study, FBG was effectively metallized with a nickel coating by using an electroless-electro plating method. The associated central wavelength shift and reflection spectrum change during the metallization were discussed,and the temperature sensing experiments of the metallized FBG were conducted within the temperature range of 30 ℃- 80 ℃. Results show that central wavelength of the tested FBG shifted down due to the compressive stress during the nickel electroplating process, and the reduction rate decreased gradually. Moreover, when the nickel coating thickness was 1.3 mm and 1.0 mm,the temperature sensitivity was 19.11 pm/℃ and 18.4 pm/℃ ,respectively.

关 键 词：光通信技术 光纤BRAGG光栅 增敏和保护 光纤智能材料 

分 类 号：TP212.44[自动化与计算机技术—检测技术与自动化装置]