Study of optical properties for photonic crystals by using OptiFDTD simulation

In this research, a high transmission Y-junction and T-junction in (1×2) splitters based of two dimensional waveguides of photonic crystal with lattice consisting of air holes was designed. The results of optical properties obtained by using a simulation program(OptiFDTD) at a wavelength (λ=1900nm) which was used to calculate the electric and magnetic fields as well as the poynting vector-z. The comparison of results for the (Y and T) junctions shows that the T-junction improved the electric and magnetic fields better than Y-junction.