Dinesen, PGHesthaven, Jan S.Lynov, JPLading, L.2013-11-122013-11-122013-11-12199910.1364/JOSAA.16.001124https://infoscience.epfl.ch/handle/20.500.14299/96863WOS:000079954200020A 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. (C) 1999 Optical Society of America [S0740-3232(99)00705-X].text::journal::journal article::research article