Accurate FDTD simulation of anisotropic media by subpixel smoothing
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Johnson_Accurate fdtd simulation.pdf
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Author(s)
Oskooi, Ardavan
Kottke, Chris
Johnson, Steven G.
Alternative Title
Accurate finite-difference time-domain simulation of anisotropic media by subpixel smoothing
Date Issued
September 2009
Journal
Optics Letters
Publisher
Optical Society of America
Citation
Ardavan F. Oskooi, Chris Kottke, and Steven G. Johnson, "Accurate finite-difference time-domain simulation of anisotropic media by subpixel smoothing," Opt. Lett. 34, 2778-2780 (2009)
Version
Author's final manuscript
Abstract
Finite-difference time-domain (FDTD) methods suffer from reduced accuracy
when discretizing discontinuous materials. We previously showed that accuracy
can be significantly improved by using subpixel smoothing of the isotropic
dielectric function, but only if the smoothing scheme is properly designed.
Using recent developments in perturbation theory that were applied to spectral
methods, we extend this idea to anisotropic media and demonstrate that the
generalized smoothing consistently reduces the errors and even attains secondorder
convergence with resolution.
MIT Department
Massachusetts Institute of Technology. Center for Materials Science and Engineering
Massachusetts Institute of Technology. Department of Mathematics
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Creative Commons Attribution-Noncommercial-Share Alike
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DOI of Published Version
https://doi.org/10.1364/OL.34.002778
