摘要
针对目前单模光纤耦合使用球面透镜存在较大像差、影响耦合效率的问题,提出了一种利用双高斯透镜作为耦合透镜消除像差、提高耦合效率的方法。双高斯透镜的特殊结构可以使得在使用球面镜时很好地消除包括球差在内的大部分像差。利用ZEMAX光学设计与仿真软件设计优化了一种用于780 nm波长、5μm模场直径单模光纤的双高斯耦合透镜,经过计算,其成像质量的评价函数达到10^(-5)量级,耦合效率达到82.07%。为单模光纤耦合透镜的设计和使用提供了一种新的思路。
Aiming at the problem that large aberrations reduce the coupling efficiency of spherical lens coupling into single mode fiber,a method of using double Gaussian lens as a coupling lens to eliminate aberrations and improve coupling efficiency is proposed.By using the special structure of the double Gauss lens,a spherical lens can eliminate most of the aberrations including spherical aberration,and reduce the influence of lens aberration on the coupling efficiency.We designed and optimized a dual Gaussian coupling lens for 780 nm wavelength 5 micron mode field diameter single mode fiber by ZEMAX.The evaluation function of the system aberration and the coupling efficiency were calculated to reach the order of 10-5 and 82.07%respectively.The article provides a new idea for the design and use of single-mode fiber-coupled lens.
作者
李巍伟
陈江
肖玉华
刘志栋
涂建辉
LiWeiwei;Chen Jiang;Xiao Yuhua;Liu Zhidong;Tu Jianhui(Science and Technology on Vacuum Technology and Physics Laboratory,Lanzhou Institute of Physics,Lanzhou 730000,China)
出处
《真空与低温》
2021年第4期400-406,共7页
Vacuum and Cryogenics
基金
真空技术与物理重点实验室基金(HTKJ2018KL510002)。
关键词
光学设计
双高斯透镜
耦合效率
像差矫正
单模光纤
冷原子技术
optical design
double Gauss lens
coupling efficiency
aberration correction
single-mode fiber
cold atom technology
