Open AccessPBG structures of two-dimensional magnetic photonic crystals in square lattice
Author(s) -
Ming Che,
Zhou Yun-Song,
Fu-He Wang,
Gu Ben-Yuan
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.54.4770
Subject(s) - photonic crystal , square lattice , condensed matter physics , materials science , optics , square (algebra) , plane wave expansion method , hexagonal lattice , dielectric , hexagonal crystal system , filling factor , band gap , lattice (music) , physics , geometry , optoelectronics , crystallography , acoustics , chemistry , mathematics , antiferromagnetism , ising model
Photonic band gap(PBG) structures of the two-dimensional magnetic photonic crystals (MPCs) are calculated by use of the plane-wave expansion method. The MPCs consist of magnetic pillars in rectangular, square, hexagonal and circular shapes, respectively embedded in dielectric medium in a square lattice. The optimal MPC samples that possess the largest gap-mid gap ratio for each type of MPC are obtained by scanning the three parameters(permeability, filling factor and rotating angle). The changes of the PBG structures are investigated when varying independently each parameter and fixing the others. Calculated results show that the frequency in the middle of the PBG hardly changes with the variation in filling factor or rotating angle, but decreases monotonicly with the increase of the per meability. The PBG width increases to a top value and then decreases with the in crease of each parameter.