Design of tunable terahertz photonic crystal narrow-band filters

• 来源期刊: 光电子快报(英文版)
• 年，卷（期）: 2009,（3）
• 页码范围: 169-172
• 页数: 4页
• 语种: 英文
• DOI: 10.1007/s11801-009-8127-6

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.