Design of tunable terahertz photonic crystal narrow-band filters  

作　　者：张会 白晋军 郭澎 王湘晖 常胜江 

机构地区：[1]Institute of Modern Optics,Nankai University

出　　处：《Optoelectronics Letters》2009年第3期169-172,共4页光电子快报（英文版）

基　　金：supported by the National Basic Research Program of China (Grant No.2007CB310403);the National Natural Science Foundation of China (Grant No.60772105);Key Program of the Applied Basic Research of Tianjin(Grant No.07JCZDJC05500)

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.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.

关 键 词：二维光子晶体 可调谐滤波器 窄带滤波器 太赫兹 时域有限差分法 平面波展开方法 设计 THZ辐射 

分 类 号：TN713[电子电信—电路与系统]