准周期结构一维光子晶体的缺陷模研究

J4 ›› 2009, Vol. 26 ›› Issue (3): 342-345.

准周期结构一维光子晶体的缺陷模研究

武继江高金霞

山东理工大学物理学院计算物理研究所山东淄博 255049

收稿日期:2008-09-01 修回日期:2008-10-06 出版日期:2009-05-28 发布日期:2009-05-07
通讯作者: 武继江(1973－)，男，山东郓城人，讲师，主要研究方向为集成光学与导波光学。 E-mail:w9513110@163.com

Defect modes of quasiperiodic one-dimensional photonic crystals

WU Ji-Jiang, GAO Jin-Xia

Computing Physics Institute of College of Physics，Shandong University of Technology，Zibo 255049,China

Received:2008-09-01 Revised:2008-10-06 Published:2009-05-28 Online:2009-05-07

摘要/Abstract

摘要：

利用传输矩阵方法，研究了光波在包含掺杂缺陷和替代缺陷的厚度渐变准周期结构一维光子晶体中的传播规律。研究结果表明，类似于传统的周期结构一维光子晶体，在准周期结构光子晶体引入缺陷，光子晶体禁带中也产生了缺陷模，并且两种缺陷所引起的缺陷模的性质基本一致；缺陷模的出现使带隙有了一定程度的加宽，而缺陷模的位置和强度与缺陷层所处的位置和缺陷层的光学厚度有关；随着缺陷层光学厚度的增大，缺陷模向长波方向移动。这些为相关光子器件的设计提供了参考。

关键词: 光电子学, 缺陷模, 传输矩阵法, 光子晶体, 准周期结构

Abstract:

The light wave propagation in quasiperiodic one-dimensional photonic crystals with the doped defect and the substitutional defect is studied by means of the transfer-matrix method. The results showed that defect modes appear in the bandgaps of this kind of quasiperiodic one-dimensional photonic crystals with defect, similar to the traditional periodic structure photonic crystals with defect. The defect modes caused by the doped defect and the substitutional defect are similar to each other. The creation of defect modes can broaden the bandgaps and the characteristics of defect modes are greatly related with the position and optical thickness of the defect. The wavelength of defect modes shifts in the direction of long-wavelength with the optical thickness of the defect layer increasing. Those offer a useful reference for the design of related photonic devices.

Key words: optoelectronic, defect mode, transfer-matrix method, photonic crystals, quasiperiodic structure

中图分类号:

O437

武继江高金霞. 准周期结构一维光子晶体的缺陷模研究[J]. J4, 2009, 26(3): 342-345.

WU Ji-Jiang, GAO Jin-Xia. Defect modes of quasiperiodic one-dimensional photonic crystals[J]. J4, 2009, 26(3): 342-345.

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