Open AccessElectromagnetic modes of thickness-modulated dual-periodic one-dimensional photonic crystals
Author(s) -
Zhou Jin-gou,
Du Gui-Qiang,
Yawen Zhang,
Nian-Hua Liu
Publication year - 2005
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.54.3703
Subject(s) - photonic crystal , optics , yablonovite , photonics , materials science , band gap , physics , optoelectronics , photonic integrated circuit , condensed matter physics
We have studied the photonic band of dual_periodic one_dimensional(1D) photonic crystals. The band splits into many sub_bands when we modulate periodically the thickness of the unit of the 1D photonic crystal. Some narrow bands appear in th e gap of the simple photonic crystal with single_period. The field of the electr omagnetic modes in the split bands exhibits dual_periodicity. The modes in the n arrow bands are localized, but those in the wider bands are extended.