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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 37, Iss. 22 — Nov. 15, 2012
  • pp: 4802–4804

Subpixel smoothing finite-difference time-domain method for material interface between dielectric and dispersive media

Jinjie Liu, Moysey Brio, and Jerome V. Moloney  »View Author Affiliations


Optics Letters, Vol. 37, Issue 22, pp. 4802-4804 (2012)
http://dx.doi.org/10.1364/OL.37.004802


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Abstract

In this Letter, we have shown that the subpixel smoothing technique that eliminates the staircasing error in the finite-difference time-domain method can be extended to material interface between dielectric and dispersive media by local coordinate rotation. First, we show our method is equivalent to the subpixel smoothing method for dielectric interface, then we extend it to a more general case where dispersive/dielectric interface is present. Finally, we provide a numerical example on a scattering problem to demonstrate that we were able to significantly improve the accuracy.

© 2012 Optical Society of America

OCIS Codes
(000.4430) General : Numerical approximation and analysis
(050.1755) Diffraction and gratings : Computational electromagnetic methods

ToC Category:
Diffraction and Gratings

History
Original Manuscript: September 28, 2012
Revised Manuscript: October 16, 2012
Manuscript Accepted: October 16, 2012
Published: November 15, 2012

Virtual Issues
December 10, 2012 Spotlight on Optics

Citation
Jinjie Liu, Moysey Brio, and Jerome V. Moloney, "Subpixel smoothing finite-difference time-domain method for material interface between dielectric and dispersive media," Opt. Lett. 37, 4802-4804 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-22-4802


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