石墨烯三缺陷光子晶体滤波特性分析  

Analysis of Filtering Characteristics of Graphene Three-defect Photonic Crystal

作　　者：凌凯 姜丽[1] 姚治海[1] 于梓麒 LING Kai;JIANG Li;YAO Zhihai;YU Ziqi(School of Physics,Changchun University of Science and Technology,Changchun 130022)

机构地区：[1]长春理工大学物理学院,长春130022

出　　处：《长春理工大学学报（自然科学版）》2023年第2期10-17,共8页Journal of Changchun University of Science and Technology(Natural Science Edition)

基　　金：吉林省科技厅自然基金面上项目(20220101031JC)。

摘　　要：为了优化信息光电子技术中传统滤波器的材料性能,设计了一种含石墨烯缺陷的一维光子晶体。利用新的传输矩阵推导了其光学特性,讨论了结构周期数、光入射角、介质层光学厚度等参数对透射谱的影响。仿真结果表明:石墨烯的加入对可见光有一定的吸收作用,使透射峰的高度降低;入射角增大时,透射谱中的透射峰发生蓝移;两介质层的光学厚度同时增大时,三个透射峰高度不变整体发生红移,透射峰的半高宽度随外层周期数的增大而变小,透射峰的位置随内层周期数的增大相互靠近;为三通道光子晶体滤波器的设计提供一定的理论指导。In order to optimize the material performance of traditional filters in information optoelectronics technology,a onedimensional photonic crystal containing graphene defects was designed.The optical properties of the one-dimensional photonic crystal with graphene defect are theoretically deduced by using the new transfer matrix method;the influence of the structure period number,the light incident angle,the optical thickness of the dielectric layer and other parameters on the transmission spectrum is discussed.The simulation results show that the addition of graphene has a certain absorption effect on visible light,which reduces the height of the transmission peaks;when the incident angle increases,the transmission peak in the spectrum is blue-shifted;the optical thickness of the two dielectric layers increase at the same time.When the heights of the three transmission peaks remain unchanged,the overall red shift occurs.The half-height width of the transmission peak changes with the increase of the outer layer period.Finally,the position of the transmission peak is close to each other with the increase of the inner layer period.It provides certain theoretical guidance for the design of the threechannel photonic crystal filter.

关 键 词：光子晶体 石墨烯 透射谱 缺陷模 

分 类 号：O431.1[机械工程—光学工程]