异质结构的低串扰少模多芯光纤设计  

Design of Low Crosstalk Few Mode Multi-Core Fiber Based on Heterogeneous Structure

作　　者：刘畅[1] 裴丽[1] 解宇恒 王建帅[1] 郑晶晶[1] 宁提纲[1] 李晶[1] Chang Liu;Li Pei;Yuheng Xie;Jianshuai Wang;Jingjing Zheng;Tigang Ning;Jing Li(Key Laboratory of All Optical Network and Advanced Telecommunication Network of Ministry of Education,Institute of Lightwave Technology,Beijing Jiaotong University,Beijing 100044,China)

机构地区：[1]北京交通大学光波技术研究所全光网络与现代通信网教育部重点实验室,北京100044

出　　处：《中国激光》2020年第11期210-216,共7页Chinese Journal of Lasers

基　　金：国家重点研发计划(2018YFB1801003);国家自然科学基金(61827817,61525501)

摘　　要：设计了一种基于异质结构的低串扰3-LP模12芯光纤,纤芯采用异质无沟槽辅助的环形折射率分布,结构简单且能增大纤芯的有效模场面积。利用COMSOL软件分析了异质纤芯的芯间串扰、有效模场面积等性能,结果表明,异质纤芯LP01,LP11,LP21模的芯间串扰分别低于-0.78,-0.66,-0.4 dB/km,有效模场面积分别为150,166,200μm 2。使用方点阵型纤芯排布方式,可实现包层直径约为213.8μm、相对纤芯复用因子为26.9的低串扰3-LP模12芯光纤设计,为通信容量的升级扩容提供器件支持。In this paper,a low crosstalk 3-LP mode 12-core fiber based on heterogeneous structure is designed.The core adopts a heterogeneous ring refractive index distribution without trench-assisted structure,which is simple in structure and can increase the effective mode area of the core.COMSOL software is used to analyze the performance of crosstalk and effective mode area of heterogeneous cores.The results indicate that the inter-core crosstalk of the heterogeneous core LP01,LP11,and LP12 modes are lower than-0.78,-0.66,and-0.4 dB/km,respectively,and their effective mode areas are 150,166,and 200μm 2,respectively.With a square lattice core arrangement,a low crosstalk 3-LP mode 12-core fiber design with a cladding diameter of about 213.8μm and a relative core multiplexing factor of 26.9 can be realized,providing device support for the upgrade and expansion of communication capacity.

关 键 词：光纤光学 少模光纤 多芯光纤 少模多芯光纤 低串扰 

分 类 号：TN252[电子电信—物理电子学]