Photonic-band-gap structures and guide modes in two-dimensional magnetic photonic crystal heterostructures |
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| Authors: | Yun-Song?Zhou,Ben-Yuan?Gu mailto:guby@aphy.iphy.ac.cn" title=" guby@aphy.iphy.ac.cn" itemprop=" email" data-track=" click" data-track-action=" Email author" data-track-label=" " >Email author,Fu-He?Wang |
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| Affiliation: | (1) Department of Physics, Capital Normal University, 100037 Beijing, P.R. China;(2) CCAST (World Lab.), P.O. Box 8730, 100080 Beijing, P.R. China;(3) Institute of Physics, Chinese Academy of Sciences, P.O. Box 603, 100080 Beijing, P.R. China |
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| Abstract: | ![]()
We first investigate the band gap structures of two-dimensional magnetic photonic crystals (MPC) composed of rectangular (square) magnetic cylinders embedded in a host dielectric material in the rectangular (square) lattice, and we then study guide modes at interface of MPC heterostructures (MPCHs) by use of plane wave expansion method in combination with supercell technique. We find that both the mirror-symmetric MPCHs and the mixed-type MPCHs composed of square cylinders in a square lattice can produce the TM guide modes even without any lattice distortions. This feature is quite different from that of the non-magnetic PC heterostructures, in which the occurrence of the guide modes requires the relatively longitudinal gliding or transverse displacement of lattices. It may provide a new way to generate guide modes and apply to the device of light wave guides.Received: 26 August 2003, Published online: 2 April 2004PACS: 42.70.Qs Photonic bandgap materials - 78.67.-n Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures - 63.20.Pw Localized modes - 42.79.Gn Optical waveguides and couplers |
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