Title :
Second-order accurate FDTD space and time grid refinement method in three space dimensions
Author :
Zakharian, A.R. ; Brio, M. ; Dineen, C. ; Moloney, J.V.
Author_Institution :
ACMS & Opt. Sci. Center, Univ. of Arizona, Tucson, AZ
fDate :
6/1/2006 12:00:00 AM
Abstract :
We present an algorithm based on the finite-difference time-domain method for local refinement of a three-dimensional computational grid in space and time. The method has second-order accuracy in space and time as verified in the numerical examples. A number of test cases with material traverse normal to the grid interfaces were used to assess the long integration time stability of the algorithm. Resulting improvements in the computation time are discussed for a photonic crystal microcavity design that exhibits a sensitive dependence of the quality factor on subwavelength geometrical features
Keywords :
Q-factor; finite difference time-domain analysis; grid computing; microcavities; optical design techniques; photonic crystals; FDTD; finite-difference time-domain method; photonic crystal microcavity design; quality factor; three-dimensional computational grid; Crystalline materials; Finite difference methods; Grid computing; Materials testing; Microcavities; Optical computing; Photonic crystals; Q factor; Stability; Time domain analysis; Finite-difference time-domain (FDTD); grid refinement; numerical simulations; photonic crystal microcavity; subgridding;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2006.875328
