LD与柱状楔形透镜光纤的耦合特性研究  

Research on LD coupled to the wedge-shaped cylindrical lensed fiber

作　　者：于海鹰[1] 王猛[1] 刘耀东[1] 王艳[1] 秦旭辉 

机构地区：[1]山东建筑大学信息与电气工程学院,山东济南250101

出　　处：《山东建筑大学学报》2015年第6期527-531,543,共6页Journal of Shandong Jianzhu University

基　　金：山东省科技厅科技攻关项目(2009GG20003071);住房与城乡建设部科技计划项目(2013K826);住房与城乡建设部科技计划项目(2013K145)

摘　　要：半导体激光器与光纤的耦合系统的优化设计,可减小耦合损耗,有利于半导体激光器的使用和发展。文章分析柱状楔形透镜光纤与半导体激光器的耦合损耗,运用矩阵光学的ABCD定律建立了柱状楔形透镜光纤与半导体激光器耦合的模型,对激光耦合进入光纤进行计算;通过仿真计算,研究柱状楔形透镜光纤的结构参数对耦合效率的影响与纵、横向位置偏移容忍度。结果表明:柱状楔形透镜光纤各项结构参数中,锥端尺寸与柱面半径对耦合效率的影响较大。锥端尺寸与柱面半径与耦合效率呈反比,在设计的耦合系统中,容忍范围为1.2μm;纵横向偏差存在时,x方向容忍度最低为0.71μm,而y方向的容忍度是x方向的3倍多;在进行柱状楔形透镜光纤耦合实验时要着重减少x方向误差。Optimizing the design of coupled system use and development of semiconductor lasers. The of laser diode has important implications for the wedge-shaped cylindrical lensed fiber get attention from the various coupling way because of its high coupling efficiency. By using the matrix optical theory and the ABCD law, the coupling loss between semiconductor lasers and the wedge-shaped cylindrical lensed fiber is analyzed, and the coupling mode is established. Through mathematical derivation and simulation software, the influence of structure parameters of wedge-shaped cylindrical lensed fiber on maximum theoretical coupling efficiency is obtained, axial and lateral offset tolerance are also analyzed. The study shows that conical size and cylinder radius has greater impact on the coupling efficiency, in the wedge-shaped cylindrical lensed fiber structural parameters. Conical size and cylinder radius are inversely proportional to the coupling efficiency. When there is axial and lateral offset, tolerance in x direction is lowest. During wedge-shaped cylindrical lensed fiber and laser diode coupling experiments to focus on reducing the deviation in x direction.

关 键 词：光纤耦合 柱状楔形透镜光纤 ABCD矩阵定律 容忍度 

分 类 号：TN929.11[电子电信—通信与信息系统]