Omnidirectional photonic band gaps in one-dimensional gradient refractive index photonic crystals considering linear and quadratic profiles

被引：6
|
作者：
Calvo-Velasco, D. M. [1 ]
Sanchez-Cano, Robert [2 ]
机构：
[1] Corp Univ Comfacauca, Dept Ciencias Basicas, Santander De Quilichao 190001, Colombia
[2] Univ Autonoma Occidente, Dept Fis, Cali 2790, Colombia
来源：
CURRENT APPLIED PHYSICS | 2022年 / 35卷
关键词：
Gradient refractive index; Photonic system; Linear index profile; Quadratic index profile; OPTICAL-PROPERTIES;
D O I：
10.1016/j.cap.2021.12.013
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
By using the transfer matrix formalism, in this work it is presented the study of the optical properties of 1D photonic structures constructed with M periods of bilayers of dielectric material and slabs with gradient refractive index (GRIN) profile of two types: linear and quadratic. By varying the profile parameters, preserving the average value of the refractive index for the GRIN slab, the results show the formation of new photonic band gaps whose bandwidths depends on the slope and the curvature of the linear and quadratic profile respectively. Also, it can be observed the formation of omnidirectional photonic bandgaps for the TE and TM polarizations, one for the linear profile and three for the quadratic one, for which their bandwidths depend linearly on the slope and the curvature of the GRIN profiles. It is expected that the presented results could be useful in the construction of optical devices based in their optical response under oblique incidence.
引用
收藏
页码：72 / 77
页数：6
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