Design of tunable terahertz photonic crystal narrow-band filters

被引：4
|
作者：
Zhang H. [1 ]
Bai J.-J. [1 ]
Guo P. [1 ]
Wang X.-H. [1 ]
Chang S.-J. [1 ]
机构：
[1] Institute of Modern Optics, Nankai University
来源：
Optoelectronics Letters | 2009年 / 5卷 / 03期
基金：
中国国家自然科学基金;
关键词：
Liquid Crystal; Photonic Crystal; Point Defect; External Electric Field; Line Defect;
D O I：
10.1007/s11801-009-8127-6
中图分类号：
学科分类号：
摘要：
The coupling between the line defect and point defect in a two-dimensional photonic crystal is studied by using plane wave expansion method and finite difference time domain method. Based on the analysis, we propose a novel tunable terahertz narrow-band filter. Simulation results on the defect modes and output spectra show that the photonic crystal that consists of two line defects and one point defect can act as a tunable filter with narrow bandwidth of 0.02 THz under the control of an external electric field. © Tianjin University of Technology and Springer-Verlag GmbH 2009.
引用
收藏
页码：169 / 172
页数：3
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