摘要
应用多极法对包层空气孔排列为十边形结构光子晶体光纤的色散、色散斜率和模场面积等进行了数值分析,并与相同结构参数的六边形和八边形排列光子晶体光纤进行了对比,发现十边形结构排列更容易获得近零平坦色散特性和高非线性特性;研究了包层空气孔直径、孔间距对光子晶体光纤模场面积和色散特性的影响,得到了获得近零超平坦色散特性和高非线性的方法;经过大量数据计算,最终设计了在1.14~1.6μm波段范围内色散波动小于1ps/(nm·km),色散斜率波动小于0.05ps/(km·nm^2)的包层空气孔十边形排列的光子晶体光纤。论文计算结果可以为设计用于超连续谱产生的光子晶体光纤提供理论依据。
Contrast with hexagonal photonic crystal fibers and octagonal photonic crystal fibers,the dispersion and mode area properties of decagonal photonic crystal fibers were simulated by the multipole method. It is easier to obtain near zero and super-flattened dispersion and high nonlinear properties for decagonal photonic crystal fibers. The effect of the structural parameters on dispersion properties such as hole diameter and pitch were investigated and the method was obtained to get near zero and super-flattened dispersion and highly nonlinear properties. Through a large number of data calculations,proper structural parameters are selected and decagonal photonic crystal fibers with zero and super-flattened dispersion properties are designed. The absolute value of dispersion coefficient of the PCF is less than 1 ps/( nm·km) between 1.14 μm and 1.6 μm,and the dispersion slope fluctuation value is less than 0.05 ps/( km·nm^2). The calculation results provide a certain theoretical base on the design of photonic crystal fibers which is used to produce super-continuum.
作者
杜海龙
郑义
DU Hailong;ZHENG Yi(Sias College of Zhengzhou University,Zhengzhou 451150,China;School of Science,Beijing Jiaotong University,Beijing 100044,China)
出处
《激光杂志》
北大核心
2018年第12期134-137,共4页
Laser Journal
基金
河南省科技厅基础与前沿技术研究计划项目(No.162300410269)
郑州大学西亚斯国际学院中青年骨干教师基金项目
