与光纤阵列耦合的微透镜阵列设计与损耗分析  

Design of Micro Lens Arrays Coupling with Fiber Arrays and Analysis of the Coupling Loss

作　　者：阎嫦玲[1] 鲁平[1] 刘德明[1] 向思桦[1] 

机构地区：[1]华中科技大学光电子工程系,湖北武汉430074

出　　处：《光电子．激光》2006年第9期1043-1047,共5页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金资助项目(60477027)

摘　　要：设计了2种不同冠高的圆形微透镜阵列,将平行光耦合进16路单模光纤阵列和多模光纤阵列。每种微透镜阵列均由16个直径为120μm的平凸微透镜排成一行组成,相邻微透镜间距为127μm。模拟其成像特性知,2种微透镜可以将平行光会聚成在其像平面直径分别为8.0μm和32.5μm的光斑。分析了微透镜与光纤存在横向、纵向和角向误差3种位置失配时的耦合损耗,并得出对耦合损耗影响最大的因素是角向误差,由此得出:在微透镜与光纤耦合对准过程中,要注意减小角向误差。To couple parallel lights into an array of 16 singlemode fibers and an array of 16 multimode fibers,two types of circular micro lens arrays with different crown heights are proposed. Each array is composed of 16 lined-up piano-convex micro lenses with the diameter of 120 μm,and the space of two adjacent lenses is 127 μm. The imaging properties of the micro lenses are simulated and it is shown that parallel lights are converged after passing through the micro lenses, and the diameters of the spots at the image planes of the two kinds of micro lens are 8.0 μm and 32.5 μm. The coupling losses when there are lateral, longitudinal and angular deviations between the micro lens array and the fiber array are also analyzed,and the factor that influences the coupling loss most is found to be angular deviation. It is concluded that angular deviation must be avoided when the micro lens array and fiber array are collimated.

关 键 词：光纤阵列 微透镜阵列 耦合 

分 类 号：TN253[电子电信—物理电子学]