含Kerr介质二维光子晶体滤波器的设计  

Design of Two-Dimensional Photonic Crystal Filter with Kerr Medium

作　　者：李支新 孙晶[1] 吴聪 苏慕阳 LI Zhixin;SUN Jing;WU Cong;SU Muyang(School of Physics and Electromechanical Engineering, Jishou University, Jishou 416000, Hunan China)

机构地区：[1]吉首大学物理与机电工程学院,湖南吉首416000

出　　处：《吉首大学学报（自然科学版）》2021年第6期23-29,共7页Journal of Jishou University(Natural Sciences Edition)

基　　金：吉首大学2020年校级科学研究课题(JDY20024);吉首大学2021年校级科学研究课题(JDY21024)。

摘　　要：利用Kerr介质的介电常数随着入射光强的变化而变化的特性,通过控制耦合腔介质柱边长来改变耦合腔频率的方法,设计了一款新型的含Kerr介质的滤波器.该滤波器由点缺陷、微腔、下载波导、反射异质结和主波导构成,耦合腔内用正方形GaAs介质柱.综合考虑利用COMSOL Multiphysics软件对新滤波器的仿真计算结果和器件尺寸,确定新滤波器的耦合腔介质柱边长为3.25r,此时滤波效率可以达到99.7%.Making use of the feature that the permittivity of Kerr medium changes with the incident light,a new-type filter with Kerr medium is designed by controlling the side length of dielectric cylinder of coupled cavity to change the frequency.This filter consists of point defect,micro-cavity,download wave-guide,reflection heterojunction and main wave-guide,and the square GaAs dielectric cylinder is used in coupled cavity.The simulation calculation made through COMSOL Multiphysics shows that the filtering efficiency of this new filter can reach 99.7%.

关 键 词：KERR介质 异质结 二维光子晶体 滤波器 

分 类 号：TM344.1[电气工程—电机]