Influence of the refractive index core profile on modal scattering of terminated two-dimensional waveguides

Koukoutsaki, PA; Dasyras, NF; Tigelis, IG; Manenkov, AB; Amditis, AJ

dc.contributor.author	Koukoutsaki, PA	en
dc.contributor.author	Dasyras, NF	en
dc.contributor.author	Tigelis, IG	en
dc.contributor.author	Manenkov, AB	en
dc.contributor.author	Amditis, AJ	en
dc.date.accessioned	2014-03-01T01:26:29Z
dc.date.available	2014-03-01T01:26:29Z
dc.date.issued	2007	en
dc.identifier.issn	10847529	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/18099
dc.subject	Refractive Index	en
dc.subject.other	Lanczos-Fourier expansion	en
dc.subject.other	Slab waveguides	en
dc.subject.other	Approximation theory	en
dc.subject.other	Electric fields	en
dc.subject.other	Fourier optics	en
dc.subject.other	Integral equations	en
dc.subject.other	Light reflection	en
dc.subject.other	Optical waveguides	en
dc.subject.other	Refractive index	en
dc.title	Influence of the refractive index core profile on modal scattering of terminated two-dimensional waveguides	en
heal.type	journalArticle	en
heal.identifier.primary	10.1364/JOSAA.24.001752	en
heal.identifier.secondary	http://dx.doi.org/10.1364/JOSAA.24.001752	en
heal.publicationDate	2007	en
heal.abstract	We examine the influence of the refractive index core profile on the modal scattering of abruptly terminated slab waveguides. The analysis is based on the integral equation method with accelerating parameters, while for the field description in the waveguide core, an appropriate Lanczos-Fourier expansion is employed. The electric-field distribution on the terminal plane, the reflection and transformation coefficient of the TE guided modes, and the far-field radiation pattern are computed. Numerical results are presented for slab waveguides with step, linear, and parabolic refractive index profiles of the core. Finally, several approximate analytical solutions are derived to study the problem in question and to explain the results obtained. © 2007 Optical Society of America.	en
heal.journalName	Journal of the Optical Society of America A: Optics and Image Science, and Vision	en
dc.identifier.doi	10.1364/JOSAA.24.001752	en
dc.identifier.volume	24	en
dc.identifier.issue	6	en
dc.identifier.spage	1752	en
dc.identifier.epage	1760	en