Efficient Effective Permittivity Treatment for the 2D-FDTD Simulation of Photonic Crystals, By Ahmad Mohammadi

Research

Title	Efficient Effective Permittivity Treatment for the 2D-FDTD Simulation of Photonic Crystals
Type	Article
Keywords	—
Journal	Journal of Computational and Theoretical Nanoscience
DOI	—
Researchers	Tahmineh Jalali (First researcher) , Ahmad Mohammadi (Third researcher) ,

Abstract

In this paper, we present an efficient effective permittivity treatment for the two-dimensional Finite- Difference Time-Domain (2D-FDTD) method that can be applied to dielectric interfaces. Various issues related to simulation arrangements are discussed based on the 60 photonic crystal (PhC) waveguide bend as a test case. The transmission, obtained numerically, agrees very well with other two-dimensional simulation methods, namely the finite-element method (2D-FEM) and the 2D multiple multipole program (2D-MMP). Compared to other FDTD schemes, such as staircasing and the volume averaging method, our model performs faster and provides more accurate results for the dielectric interface.