Premium
A novel photonic crystal band‐pass filter using degenerate modes of a point‐defect microcavity for terahertz communication systems
Author(s) -
ChunPing Chen,
Anada Tetsuo,
Greedy Stephen,
Benson Trevor M.,
Sewell Phillip
Publication year - 2014
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.28204
Subject(s) - photonic crystal , plane wave expansion , terahertz radiation , plane wave expansion method , microwave , resonator , degenerate energy levels , optoelectronics , band pass filter , physics , optics , passband , supercell , quantum mechanics , thunderstorm , meteorology
Compact devices are important for the realization of terahertz communications systems. This article proposes a novel photonic crystal‐based device for realizing microminiature, high‐selectivity high Q band‐pass filters (BPF) and the design of a dual‐mode square lattice photonic crystal BPF that utilizes the degenerated modes of a point defect microcavity is presented. To design a high Q microcavity, the photonic band‐gap is initially calculated using the plane wave expansion method. Second, the eigenfrequencies and modal fields of a point defect microcavity that generates localized states in the band‐gap are calculated by a supercell method. Finally, the characteristics of mode splitting and the proposed dual‐mode BPFs are numerically studied by a full‐wave time‐domain method. © 2014 The Authors. Microwave and Optical Technology Letters Published by Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:792–797, 2014