二维新型函数光子晶体带隙结构研究  

Band gap structure of two-dimensional new-type function photonic crystals

作　　者：刘晓静[1] 张斯淇[2] 梁禺[1] 刘继平[1] 马季[1] 李宏[3] 孟祥东[1] 吴义恒[4] 陆景彬[2] LIU Xiaojing1, ZHANG Siqi2, LIANG Yu1, LIU Jiping1, MA Ji1, LI Hong3, MENG Xiangdong1, WU Yiheng4, LU Jingbin2(1 College of Physics, Jilin Normal University, Siping 136000, China; 2 College of Physics, Jilin University, Changchun 130012, China;3 School of Physics, Northeast Normal University, Changchun 130012, China;4 School of Physics and Electronic Engineering, Anqing Normal University, Anqing 246133, China)

机构地区：[1]吉林师范大学物理学院,吉林四平136000 [2]吉林大学物理学院,吉林长春130012 [3]东北师范大学物理学院,吉林长春130012 [4]安庆师范学院物理与电气工程学院,安徽安庆246133

出　　处：《量子电子学报》2018年第2期191-196,共6页Chinese Journal of Quantum Electronics

基　　金：国家自然科学基金;61275047;吉林省科技发展计划项目;20130101031JC~~

摘　　要：用平面波展开法研究了二维函数光子晶体的带隙结构,其介质柱折射率为空间坐标函数。对TE和TM波带隙结构进行了数值分析,并与二维常规光子晶体(即介质柱折射率为常数)带隙结构进行了比较。研究了介质柱半径r_a、函数系数k和参数b对二维函数光子晶体带隙结构的影响,结果表明通过改变r_a、k、b的取值,可实现对二维函数光子晶体带隙的调节;二维函数光子晶体存在绝对带隙及半Dirac点.这些结论为光子器件设计提供了新的理论依据.The band gap structure of two-dimensional function photonic crystals is investigated with plane wave expansion method, and the refractive index of dielectric cylinder is space coordinate function. Band gap structure of TE and TM waves is analyzed numerically, and which is compared with two-dimensional conventional photonic crystals （the medium columns refractive index are constants）. Influences of medium column radius ra, function coefficient k and parameter b on band gap structure of two-dimensional function photonic crystals are investigated. Results show that the band gap adjustment of two-dimensional function photonic crystals can be realize by changing the values of ra, k and b. There are absolute band gaps and semi-Dirac points in two-dimensional function photonic crystals. Results provide a new theoretical basis for the design of optics devices.

关 键 词：量子光学 二维函数光子晶体 带隙结构 绝对带隙 半Dirac点 

分 类 号：O431.2[机械工程—光学工程]