基于二次曝光法的切趾2mm短栅距光纤布拉格光栅制作研究  

Research on Fabrication of Apodized FBG with Short Grating Length of 2 mm Based on Double-exposure Apodizing Technology

作　　者：武洪波[1] 陈爽[1] 赵印明[1] 陈喜[1] 

机构地区：[1]中航工业北京长城计量测试技术研究所,北京100095

出　　处：《计测技术》2013年第3期28-32,共5页Metrology & Measurement Technology

基　　金：中航工业集团创新基金支持项目(2009F30472)

摘　　要：研究了基于二次曝光法的2 mm短栅距型光纤布拉格光栅(FBG)的制作及切趾函数参数控制。针对所选取的3种切趾函数,在耦合模理论基础上,利用传输矩阵法进行了FBG光学特性仿真分析,给出了最佳切趾参数下的光栅反射谱。FBG制作实验结果表明,所选取的不同切趾型短栅距FBG性能较好满足传感用性能要求,为高反射率、较窄带宽、高边模抑制比的短栅距型FBG的制作研究提供了有益的参考。We introduce the fabrication of apodized FBG with a grating length of 2mm based on double-exposure apodizing technology and on the control of apodizing parameters. Three kinds of apodizing functions are chosen and their corresponding optimum control parameters are given after FBG＇ s transmission spectra simulation, based on Coupled Mode Theory and TMM method. FBG＇ s reflection spectra are provided after sim- ulation. It is shown by the experimental results that these three different kinds of apodized FBG with short grating length can satisfy the require- ments for sensing. They have great features of high reflectivity, high side-mode suppression ratio and comparatively low FWHM, and are contribm tory to the study of the fabrication of apodized FBGs with short grating length.

关 键 词：光纤布拉格光栅 短栅距 二次曝光切趾 

分 类 号：TN253[电子电信—物理电子学]