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Information × Registration Number 2114U001686, Article popup.category Стаття Title popup.author popup.publication 01-01-2014 popup.source_user Сумський державний університет popup.source http://essuir.sumdu.edu.ua/handle/123456789/37121 popup.publisher Sumy State University Description The paper describes a numerical method based on the Fourier transform application for studying propagating optical waves in dielectric planar waveguides. The inverse problem to known direct one in waveguide investigation is proposed, namely a search of light wavelengths according to taken values of propagation constants. For each constant a set of wavelengths is obtained, among which an input value of wavelength in direct problem exists necessarily. A high accuracy of the method proposed is confirmed by exact values obtained by solution of transcendental dispersion equation. This method is tested on many examples, in particular, for waveguides of different permittivity profiles or modes of TE- and TM-polarization. popup.nrat_date 2025-05-12 Close