大功率光纤耦合模块光学系统  

High Power Optical Fiber Coupling Module Optical Systems

作　　者：袁春生[1] 刘洋洋[2] 房玉锁[1] 杜旭涛[2] 徐会武[1] 安振峰[1] 

机构地区：[1]中国电子科技集团公司第十三研究所,石家庄050051 [2]河北工业大学信息工程学院,天津300401

出　　处：《微纳电子技术》2015年第4期205-210,260,共7页Micronanoelectronic Technology

摘　　要：基于单管半导体激光器光束传输特性,用光线追迹法对光纤耦合光路进行仿真分析,结果表明在激光器与光纤间放置圆柱透镜的间接耦合方法具有成本低廉、准直光束质量好等特性。根据光束传输几何关系,优化得到了准直距离L与圆柱透镜半径r比值为0.5时,准直效果最好,准直后发散角为2.45°。用光学仿真软件设计耦合光路,并对耦合光路进行光线追迹,结合产品的可靠性问题,最终得到优化的柱透镜直径为60μm。进行耦合实验,测量准直后发散角和采用水冷散热的耦合系统的耦合效率,准直后发散角约为2.55°,耦合效率最高为89.50%。耦合实验结果与仿真结果接近,满足了光纤激光器泵浦源的使用要求。Based on the beam transmission characteristics of the single emitter semiconductor laser,the optical fiber coupling optical path was simulated and analyzed using the ray tracing method.The results show that the indirect coupling method with the cylindrical lens placed between the laser and optical fiber has advantages such as low cost and good collimating beam quality.Based on the beam transmission geometric relations,optimal the ratio of the collimating diatance Land radius r of the cylindrical lens is 0.5,the collimation effect is best,the divergence angle is 2.45°after the collimation.The coupling optical path was designed using the optical simulation software,and the ray tracing of the coupling optical path was carried out.Combining the product reliability problems,the optimized diameter of the cylindrical lens is 60μm.The coupling experiment was conducted,the divergence angle after the collimation and the coupling efficiency of the water-cooling thermal coupling system were measured.The results show that the divergence angle is about 2.55°after the collimation,the maximum coupling efficiency is 89.50%.The coupling experiment result is close to the simulation result,the operational requirements of fiber laser pump sources are satisfied.

关 键 词：单管半导体激光器 光线追迹 圆柱透镜 耦合效率 光纤耦合 

分 类 号：TN248.4[电子电信—物理电子学]