基于非球面透镜的光纤耦合系统设计  

Design of optical fiber coupling system with an aspherical lens

作　　者：陈海涛[1,2] 杨华军[2] 黄小平[2] 程晓洪[1] 

机构地区：[1]宜宾学院物理与电子工程学院,四川省高校计算物理重点实验室,四川宜宾644000 [2]电子科技大学物理电子学院,四川成都610054

出　　处：《激光与红外》2013年第1期76-78,共3页Laser & Infrared

基　　金：国家自然科学基金项目(No.11004024);四川省教育厅基金项目(No.10Zc031);宜宾学院基金项目(No.2010Z07)资助

摘　　要：有效将激光耦合进单模光纤是自由空间光通信的关键技术。为了改善聚焦光束质量和降低耦合损耗,首先设计了消球差非球面透镜,并采用精密光纤支架对耦合光纤进行准确定位使耦合光聚焦在光纤端面上。实验表明,该耦合系统的耦合效率达到60%以上。Effectively coupling the coherent laser into singlemode fiber is a key technology for freespace optical communication. In this paper, we analyze how to mitigate the efficiency degradation due to lens spherical aberration and fi ber position deviation. Firstly, an aspherical lens was designed to improve the focused spot quality and thereby de crease the coupling loss. Then, a precision fiber holder was adopted to precisely fix the fiber position and make the fo cal plane of the light coincided with the endface of the fiber. The measured coupling efficiency of 60% is achieved in the experiment.

关 键 词：光通信 耦合效率 消球差透镜 

分 类 号：TN929.11[电子电信—通信与信息系统]