基于DFB激光器的楔形截顶光纤微透镜耦合结构  

Coupling structure of truncated wedge-shaped optical microlens based on DFB laser

作　　者：蒋金宏 李勇奇 吕欢祝 金琪 张克非[2] JIANG Jinhong;LI Yongqi;L Huanzhu;JIN Qi;ZHANG Kefei(School of Science,Southwest University of Science and Technology,Mianyang 621010,China;School of Computer Science and Technology,Southwest University of Science and Technology,Mianyang 621010,China)

机构地区：[1]西南科技大学理学院,绵阳621010 [2]西南科技大学计算机科学与技术学院,绵阳621010

出　　处：《激光技术》2019年第5期655-659,共5页Laser Technology

基　　金：四川省科学技术厅重点研发基金资助项目(2018GZ0212);国家级大学生创新创业训练计划资助项目(201810619047; 201810619051)

摘　　要：为了解决分布式反馈激光器的光发射次模块耦合封装中存在最大耦合效率局限的问题,采用楔形截顶光纤微透镜代替分立式透镜的直接耦合的方法,得到斜面倾角0.6rad、耦合距离60μm、半宽度15μm的楔形截顶光纤端面模型。在此基础上与分立式和直接耦合进行对比,讨论了纵向、横向和角度偏移误差。结果表明,纵向耦合距离在-21.45μm^56.79μm,角向耦合角度在-8.3°~8.5°,耦合效率始终大于70%;结构整体容忍度较高,耦合效率达84.40%。该研究可为下一代分布式反馈激光器的次发射模块耦合封装器件提供新的解决方案。In order to overcome the limitation of maximum coupling efficiency in the coupling package of optical emission sub-modules of distributed feedback laser lasers,the wedge-shaped truncated optical fiber microlens was used to replace the discrete lens in direct coupling scheme.A wedge-shaped truncated end-face model with inclined angle of 0.6rad, coupling distance of 60μm and half-width of 15μm was obtained. On this basis, compared with discrete and direct coupling, longitudinal, transverse and angular migration errors were discussed.The results show that, when longitudinal coupling distance is -21.45μm~ 56.79μm and angular coupling angle ranges from -8.3°~8.5°,the coupling efficiency is always greater than 70%. The overall tolerance of structure is high and the coupling efficiency is 84.40%.This research can provide a new solution of secondary emission module of coupling package device for the next generation distributed feedback lasers.

关 键 词：光通信 截顶楔形光纤微透镜 失配容忍度 分布式反馈激光器 直接耦合 

分 类 号：TN243[电子电信—物理电子学]