CAJ | 학술논문

通过化学镀和电镀的方法使光纤布拉格光栅金属化，可对光纤光栅进行保护、增敏，使其具有可焊性，进而可通过焊接嵌入金属或封装在表面监测工作状态。采用化学镀Ni-Zn-P方法对光纤布拉格光栅进行了金属化，通过体视显微镜和金相显微镜观察Ni-Zn-P镀层；对化学镀后的光纤光栅进行了30～70℃温度传感试验，分析了传感特性。结果表明：化学镀后的光纤与镀层结合良好，具有导电性可以进一步电镀；化学镀光栅与裸光栅相比温度传感灵敏度提升1．1倍，存在迟滞误差，随静置时间的推移灵敏度不变，迟滞误差减小。残余应力是产生迟滞误差的主要原因，分析讨论了残余应力的来源和残余应力对金属化光栅中心波长的影响。
통과화학도화전도적방법사광섬포랍격광책금속화，가대광섬광책진행보호、증민，사기구유가한성，진이가통과한접감입금속혹봉장재표면감측공작상태。채용화학도Ni-Zn-P방법대광섬포랍격광책진행료금속화，통과체시현미경화금상현미경관찰Ni-Zn-P도층；대화학도후적광섬광책진행료30～70℃온도전감시험，분석료전감특성。결과표명：화학도후적광섬여도층결합량호，구유도전성가이진일보전도；화학도광책여라광책상비온도전감령민도제승1．1배，존재지체오차，수정치시간적추이령민도불변，지체오차감소。잔여응력시산생지체오차적주요원인，분석토론료잔여응력적래원화잔여응력대금속화광책중심파장적영향。
A fiber Bragg grating (FBG)can be effectively metallized and protected by using the chemical plating and electro-plating methods. After metallization,the sensitivity of the FBG can be enhanced,and the metallized FBG can be embedded in a metal by using the brazing or soldering process for monitoring the internal temperature and strain. In this study,the FBGs were metallized by electroless Ni-Zn-P plating method;the quality of the coating was observed with the stereomicroscopy and optical microscopy;Temperature sensing tests for the metallized FBGs were conducted in a controlled water bath with the temperature range of 30~70℃,the sensing characteristics were analyzed. Results show:the interface between the coating and FBG presents a good bonding,and the coating has a nice conductivity;the sensitivity of the metallized FBG is about 1. 1 times of that of a bare FBG,and there is a hysteresis error in the sensing curve;it is noted that the sensitivity remains the same value and the hysteresis error decreases with the time aging;the hysteresis error is caused by the residual stress,the origin of residual stress and its influences on the central wavelength are analyzed.