太赫兹波在三角晶格光子晶体中传输特性的数值仿真  

Numerical Simulation of THz Wave Transmission Characteristics in Triangular Lattice Photonic Crystal

作　　者：李院平 孙传伟 姜泽琮 王孟辰 LI Yuan-ping;SUN Chuan-wei;JIANG Ze-cong;WANG Meng-chen(School of Opto-Electronic Engineering,Zaozhuang University Zaozhuang,277160,China)

机构地区：[1]枣庄学院光电工程学院

出　　处：《枣庄学院学报》2019年第5期20-25,共6页Journal of Zaozhuang University

基　　金：国家重点研发计划重点专项(项目编号:2017YFB1401200);国家自然基金项目(项目编号:61701434);山东省自然基金项目(项目编号:ZR2018LF001;ZR2017MF005);枣庄市自主成果转化项目(项目编号:2016GH19)

摘　　要：由三种不同半导体材料SI、GaAs、ZnO构成的三角晶格光子晶体,数值模拟太赫兹波在其中的传输特性,结果表明在其各自的TM模式带隙特性中,都存有一定的禁带;改变r/a占空比,数值模拟太赫兹波在SI材料构成的二维三角晶格光子晶体中的传输特性,结果表明随着占空比的增大,禁带宽度增加,到r/a=0.5时又迅速减小;为了进一步观察布里渊区带隙分布特性,模拟了Γ到K/2之间的带隙结构.研究结论为太赫兹三角晶格光子晶体传输波导的设计提供参考.Firstly,three kinds of triangular lattice photonic crystals which composed of SI,GaAs and ZnO respectively are simulated.The results show that there are some band gaps in their TM mode band gaps.By changing the r/a duty ratio,the transmission characteristics of terahertz wave in a two-dimensional triangular lattice photonic crystal which composed of SI material is also simulated.It shows that the bandgap width increases with the increase of duty ratio and decreases rapidly when r/a=0.5.In order to further observe the band gap distribution in Brillouin region,the band gap structure between Γand K/2 is also simulated.The research provide a reference for the design of waveguide which used terahertz triangular lattice photonic crystal.

关 键 词：太赫兹波 光子晶体 传输特性 

分 类 号：O431.1[机械工程—光学工程]