## Pseudospectral method for the analysis of diffractive optical elements

JOSA A, Vol. 16, Issue 5, pp. 1124-1130 (1999)

http://dx.doi.org/10.1364/JOSAA.16.001124

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### Abstract

A pseudospectral method for the analysis of diffractive optical elements is presented. This method is a full-vectorial direct solution of the time-domain Maxwell equations based on a spectral approximation of the spatial derivatives employed within a multidomain framework. The method exhibits little numerical dispersion, and only a few points per wavelength are needed to accurately resolve the propagation of the optical field over long distances. A comparison with the analytic solution for a thin-film waveguide is performed, and examples of analyses of grating couplers are given to demonstrate the feasibility of the method.

© 1999 Optical Society of America

**OCIS Codes**

(000.4430) General : Numerical approximation and analysis

(050.1960) Diffraction and gratings : Diffraction theory

**History**

Original Manuscript: August 4, 1998

Revised Manuscript: November 30, 1998

Manuscript Accepted: December 2, 1998

Published: May 1, 1999

**Citation**

P. G. Dinesen, J. S. Hesthaven, J. P. Lynov, and L. Lading, "Pseudospectral method for the analysis of diffractive optical elements," J. Opt. Soc. Am. A **16**, 1124-1130 (1999)

http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-16-5-1124

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