基于椭圆基元光子晶体的宽角度自准直传输研究  

All-angle Self-collimation in Photonic Crystals with Elliptical Basis

作　　者：孙慧玲[1] 陈宝锭[2] 陈华宝[2] 李清波[2] 

机构地区：[1]淮阴师范学院人事处,江苏淮安223300 [2]淮阴师范学院物理与电子电气工程学院,江苏淮安223300

出　　处：《淮阴师范学院学报（自然科学版）》2014年第2期121-125,共5页Journal of Huaiyin Teachers College;Natural Science Edition

基　　金：江苏省高校大学生创新创业训练计划项目(201310323009Z);淮安市科技支撑计划项目(HAG2010068)

摘　　要：针对二维光子晶体在自准直传输现象,推导了非正交坐标系下的时域有限差分(FDTD)模型,有效地计算了二维椭圆基元光子晶体带隙结构.结合等频图分析,从理论上研究了二维椭圆基元光子晶体结构中TM模式的自准直现象,优化设计出宽角度自准直效应模型,并通过高斯波束验证了其无衍射自导传输模式.In view of the self-collimation transmission phenomenon , a finite-difference time-domain scheme in a nonorthogonal coordinate system is presented to calculate the band structure of a two-dimensional photonic crystal.Self-collimation of photonic crystals in the whole angular range of ±90°in the fourth band of a two-dimensional photonic crystals with elliptical basis is demonstrated by examining the band structure and equifrequency contours .non-diffraction guiding modes is verified by a gaussian beam .

关 键 词：光子晶体 自准直 非正交时域有限差分方法 

分 类 号：O413.1[理学—理论物理]