Transmission properties of one-dimensional graded photonic crystals and enlargement of omnidirectional negligible transmission gap

被引：23
作者：
Tian, Huiping [1 ]
Ji, Yuefeng
Li, Changhong
Liu, Hai
机构：
[1] Beijing Univ Posts & Telecommun, Sch Telecommun Engn, Beijing 100876, Peoples R China
[2] Minist Educ, Key Lab Opt Commun & Lightwave Technol, Beijing 100876, Peoples R China
来源：
OPTICS COMMUNICATIONS | 2007年 / 275卷 / 01期
关键词：
photonic crystals; graded structure; omnidirectional mirror;
D O I：
10.1016/j.optcom.2007.03.003
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We investigate numerically the transmission properties of one-dimensional (1D) graded photonic crystals (PCs) in detail. Under the condition of linearly graded structures, the gap broadening of three cases is calculated: the case when the thickness of low index layer is increased, the case when the thickness of high index layer is increased and the case when the thickness values of both layers are increased simultaneously. Then the gap broadening of another graded case with the thickness exponentially increased is presented. At last the enlargement of omnidirectional negligible transmission band gap is obtained. (c) 2007 Elsevier B.V. All rights reserved.
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页码：83 / 89
页数：7
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