基于包层管正曲率调控的新型太赫兹反谐振光纤  

Novel Terahertz anti-resonant fiber based on positive curvature regulation of cladding tube

作　　者：章玉卓 肖庆生[1] ZHANG Yuzhuo;XIAO Qingsheng(School of Information Engineering,Jiangxi University of Science and Technology,Ganzhou Jiangxi 341000,China)

机构地区：[1]江西理工大学信息工程学院,江西赣州341000

出　　处：《光通信技术》2023年第6期21-28,共8页Optical Communication Technology

基　　金：国家自然科学基金项目(编号:61665003)资助;江西省自然科学基金资助项目(编号:20192BAB207036)资助。

摘　　要：针对光纤包层管正曲率部分现有研究较少的情况,提出一种基于包层管正曲率调控的新型太赫兹反谐振光纤。首先,对比研究了圆形包层管与半圆半椭圆形包层管的太赫兹反谐振光纤的结构,分析了正曲率对光纤限制损耗的影响及主要机理;然后,对太赫兹反谐振光纤的结构进行优化,即在光纤间隙处采用了2层包层管结构;最后,对3种结构的光纤的限制损耗性能进行仿真计算,并对新型太赫兹反谐振光纤的单模特性进行分析。仿真结果表明:与其它结构的光纤相比,新型太赫兹反谐振光纤的限制损耗为10-5 dB/m数量级,且在2.5~3.1 THz波段保持良好的单模特性。In view of the few studies on the positive curvature of fiber cladding tube,a new Terahertz antiharmonic fiber based on the positive curvature regulation of fiber cladding tube is proposed.Firstly,the structure of Terahertz anti-resonant fiber with circular cladding tube and semi-circular semi-elliptical cladding tube is studied,and the influence of positive curvature on the limiting loss of fiber and the main mechanism are analyzed.Then,the structure of Terahertz antiharmonic fiber is optimized,and the two-layer cladding tube structure is adopted in the fiber gap.Finally,the loss limiting performance of three kinds of fiber structures is simulated,and the single-mode characteristics of the new Terahertz antiharmonic fiber are analyzed.The simulation results show that compared with other fiber structures,the new antiresonant THz fiber has a limited loss of 10-5 dB/m,and maintains good single-mode characteristics in 2.5~3.1 THz band.

关 键 词：太赫兹波导 反谐振光纤 正曲率 限制损耗 

分 类 号：TN253[电子电信—物理电子学]