Investigation of Two Dimensional Band Structure of New Geometrics Photonic Crystal

In this paper, new structures of two-dimensional periodic photonic crystals in the form of dielectric rods with different geometric shape are presented. All photonic crystals presented in this paper are in a square lattice. Band structure and photonic band gap limitation graph of these structures are obtained by using numerical method of plane wave expansion for transverse electric (TE) and transverse magnetic (TM) modes. The simulation results for these structures show different photonic band gaps width and places for different structures and modes.