光纤波导结构设计仿真软件SeeNano  

Fiber-Waveguide Structure-Design Simulation Software SeeNano

作　　者：段磊[1] 谭姝丹 徐帆江[1] Duan Lei;Tan Shudan;Xu Fanjiang(National Key Laboratory of Space Integrated Information System,Institute of Software,Chinese Academy of Sciences,Beijing 100190,China)

机构地区：[1]中国科学院软件研究所天基综合信息系统全国重点实验室,北京100190

出　　处：《中国激光》2024年第19期237-245,共9页Chinese Journal of Lasers

基　　金：国家重点研发计划(2022YFB3606000)。

摘　　要：设计高性能光纤是实现高功率光纤激光器功率提升的重要环节。为解决复杂光纤结构数字化设计难题,在光纤光学理论的基础上,初步开发了光纤波导结构设计仿真软件——SeeNano。本文介绍了多层折射率光纤的部分理论模型以及该软件的基本功能和两个典型案例,利用该软件计算了模场分布、有效折射率、有效模场面积、色散等重要参数,并将计算结果与商用软件计算结果进行了比较。该软件可在一定程度上降低多层折射率光纤的研究和设计难度,有望推动国产光纤设计软件的发展。Objective The objective of this study is to enhance the power of high-power fiber lasers by designing high-performance fibers and to overcome the challenges associated with the digital design of complex fiber structures.Currently,the optical characteristic parameters of fibers are primarily obtained through experimental measurements or numerical calculations,which are expensive and difficult to accomplish.Therefore,the development of fiber modeling and simulation software for aiding the design is particularly urgent.Existing commercial fiber photonics simulation software typically present issues such as complex operation and non-specialization.In this study,SeeNano,which is a fiber-waveguide structure-design software,was developed.We analyze the cross-sectional structure of multilayer refractive-index fibers from the lateral dimension,establishe various material library models,and optimize the characteristic parameters of the fibers by analyzing their mode,loss,and dispersion characteristics to provide new solutions for enhancing the power of high-performance fibers and high-power fiber lasers.Methods First,the optical scale of fiber waveguides was considered via mathematical modeling and software development.Initially,a numerical model of the characteristic equation transmission matrix for fibers and other dedicated algorithm models were established to provide a theoretical basis for calculating the fiber mode-field,loss,and dispersion characteristics.Subsequently,based on software engineering,a fiber-waveguide design and simulation software named SeeNano was developed,which features a simple and intuitive graphical user interface with a guided operation flow.It was designed to help users understand the usage of the software promptly and reduce the learning difficulty.Subsequently,the design processes of two cases,i.e.,step-and graded-index trenchassisted cases,were introduced,and key characteristic parameters,such as the effective mode-field area,effective mode-field diameter,material dispersion,and waveguide d

关 键 词：光纤波导 光纤结构 阶跃折射率光纤 渐变折射率光纤 传导模式 仿真软件 

分 类 号：TN252[电子电信—物理电子学]