Effect of Metallic Slab Cladding on Photonic Crystal Band Structures

摘要

We study the effect of a metal cladding on the band structure of a two-dimensional photoniccrystal slab. In this paper, we present some photonic band structures of square and triangularlattice-hole-patterned photonic crystal slabs. The results for the perfect electric conductor (PEC)or the metal cladding cases are shown. We used both the plane wave expansion (PWE) method andthe finite-difference time-domain (FDTD) method and we compared them to each other. We explainhow each cladding changes the band structure and we suggest the amount of change, especially atthe r point in the photonic band diagram.