基于ZEMAX单模大光束光纤准直透镜信号耦合分析  

Signal Coupling Analysis of Single-Mode Large Beam Fiber Collimating Lens Based on ZEMAX

作　　者：何琦 赵振刚[1,2] 许晓平 罗川[1] 李英娜 李川[1,2] He Qi;Zhao Zhengang;Xu Xiaoping;Luo Chuan;Li Yingna;Li Chuan(Faculty of Information Engineering and Automation,Kunming University of Science and Technology,Kunming,Yunnan 656500,China;Yunnan Key Laboratory of Computer Technology Applications,Kunming,Yunnan 656500,China)

机构地区：[1]昆明理工大学信息工程与自动化学院,云南昆明656500 [2]云南省计算机应用重点实验室,云南昆明656500

出　　处：《激光与光电子学进展》2021年第21期87-95,共9页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(51667011,61765009,61962031);云南省自然科学基金(2018FB095,202101AT070131)。

摘　　要：针对光纤连接器核心部件之一光纤准直透镜信号精密耦合问题,采用双合透镜设计了一种单模大光束光纤连接器。通过分析双合透镜特性、光纤准直器阵列中的多光学器件耦合机理和准直透镜间的3种耦合偏差引起的传输损耗,推导出该耦合系统的传输损耗公式。基于MATLAB分析得到:角向失配对准直器的耦合损耗影响最大,轴向失配影响最小。利用光学仿真软件ZEMAX在序列和混合模式下对连接器进行模拟,用Origin绘制出不同失配情况下信号耦合效率曲线,结果表明单模光纤芯径为12μm时,耦合效率达到92.42%。最后通过光学平台搭建实验系统,验证了仿真结果的准确性。Aiming at the precise coupling problem of the optical fiber collimating lens signal,one of the core components of the optical fiber joint,a single-mode large beam optical fiber connector is designed using a doublet lens.By analyzing the characteristics of dual lens,the coupling mechanism of the multi-optical devices in the fiber collimator array,and the transmission loss caused by the three coupling deviations between the collimating lenses,the transmission loss formula of the coupling system is derive.Based on MATLAB analysis,the angular mismatch has the greatest effect on the coupling loss of the collimator,and the axial mismatch has the least effect.The optical simulation software ZEMAX is used to simulate the joint in sequence and hybrid modes,and Origin is used to plot the signal coupling efficiency curves under different mismatch conditions.The results show that when the core diameter of single-mode fiber is 12μm,the coupling efficiency reaches 92.42%.Finally,an experimental system is built through the optical platform to verify the accuracy of the simulation results.

关 键 词：光纤光学 光纤旋转连接器 双合透镜 单模光纤 大光束准直透镜 ZEMAX 

分 类 号：TN247[电子电信—物理电子学]