Photonic band structure calculations for metal-clad two-dimensional photonic crystal slab |
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Affiliation: | 1. Department of Physics, Korea University, Seoul 136-701, Republic of Korea;2. Department of Physics and Astronomy, Seoul National University, Seoul 151-747, Republic of Korea |
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Abstract: | We study the effect of metallic cladding on the band structure of a two-dimensional photonic crystal slab. Band structures of a honeycomb patterned two-dimensional photonic crystal slab, with/without a metal-clad or a perfect conductor clad, are calculated using both the finite-difference time-domain (FDTD) method and the plane wave expansion (PWE) method. We explain the changes of the band structure due to cladding. We also show that the band structure of a metal-clad photonic crystal can be obtained effectively from the odd modes of the air bridge type dielectric photonic crystal slab, thicker than the metal-clad photonic crystal by a factor larger than two. |
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