Efficient effective permittivity treatment for the two-dimensional finite difference time-domain simulation of photonic crystals
In: Journal of Computational and Theoretical Nanoscience, Jg. 4 (2007) ; Nr. 3, S. 644 - 648
Zeitschriftenaufsatz / Fach: Elektrotechnik
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.