点缺陷对波导的电场分布的调制  

Themodulation of point defect on electric field distribution of waveguide

作　　者：吴向尧[1] 刘晗[1] 屈春宏 马美玲 刘掌辉 王梦飞 王保亮 王艺洁 宋雨生 张晓茹[1] WU Xiang-yao;LIU Han;QU Chun-hong;MA Mei-ling;LIU Zhang-hui;WANG meng-fei;WANG Bao-liang;WANG Yi-jie;SONG Yu-sheng;ZHANG Xiao-ru(College of Physics,Jilin Normal University,Siping 136000,China)

机构地区：[1]吉林师范大学物理学院

出　　处：《吉林师范大学学报（自然科学版）》2020年第1期67-72,共6页Journal of Jilin Normal University:Natural Science Edition

基　　金：吉林师范大学博士科研启动项目(2017005);吉林师范大学研究生创新项目(研创新201937)

摘　　要：在二维函数光子晶体研究的基础上,进一步研究二维常规光子晶体波导中加入点缺陷介质柱时,二维光子晶体波导的带隙结构与电场分布情况.其中点缺陷介质柱介电常数是空间坐标的函数,其函数形式为εr=kr+b,参数k和b的变化可以通过光学Kerr效应或电光效应来实现.结果表明,通过改变点缺陷介质柱介电常数的参数k和b以及点缺陷半径r a,可以调节光的传播方向和光场分布,从而可以控制光在波导中传播方向.因此当含点缺陷时,二维常规光子晶体波导的光场分布和光的传播方向具有可调性.这些理论为光学器件的设计提供有价值的新的设计思路.The distribution of light field and the propagating direction can be changed by adjusting the dielectric constant parameters k and b of the point defect dielectric column,when point defects are added into the waveguide.The functions form of dielectric constant of dielectric column isεr=kr+b,in which the parameters k and b can be realized by electro-optical effect.When dielectric constant parameters k,b and radius r b of the point defect dielectric column changes,the electric field distribution and the propagating direction of waveguide can be adjusted,i.e.,the electric field position and and the propagating direction can be adjusted by changing parameters k,b and radius r b of the point defect dielectric column.This results will provide a theoretical basis and a new design idea for optical device design.

关 键 词：光子晶体波导 函数点缺陷 二维光子晶体 

分 类 号：O539[理学—等离子体物理]