CAJ | 학술논문

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益~80益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1.3 mm和1.0 mm的FBG的温度灵敏度分别为19.11 pm/益和18.4 pm/益。
광섬Bragg광책( FBG)작위전감급신식전수기건，감입도금속중가획득광섬지능재료혹결구。위료대FBG진행괄당적증민화보호봉장，이화학도가전도적방법실현료FBG적유효봉장，토론료금속화과정중FBG중심파장표이정황급금속화전후FBG반사보변화정황，병대금속화후적FBG재외계온도위30익~80익진행료온도전감시험。결과표명：FBG재전도얼과정중수도입자침적압응력작용，기중심파장감소，차감소속솔선쾌후만；도얼층후도위1.3 mm화1.0 mm적FBG적온도령민도분별위19.11 pm/익화18.4 pm/익。
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.