Integral equation analysis of coupling in symmetric grating-assisted optical waveguides

Tsitsas, NL; Kaklamani, DI; Uzunoglu, NK

dc.contributor.author	Tsitsas, NL	en
dc.contributor.author	Kaklamani, DI	en
dc.contributor.author	Uzunoglu, NK	en
dc.date.accessioned	2014-03-01T01:24:31Z
dc.date.available	2014-03-01T01:24:31Z
dc.date.issued	2006	en
dc.identifier.issn	1084-7529	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/17302
dc.subject	Integral Equation	en
dc.subject	Optical Waveguide	en
dc.subject.classification	Optics	en
dc.subject.other	Convergence of numerical methods	en
dc.subject.other	Diffraction gratings	en
dc.subject.other	Electric fields	en
dc.subject.other	Galerkin methods	en
dc.subject.other	Integral equations	en
dc.subject.other	Matrix algebra	en
dc.subject.other	Method of moments	en
dc.subject.other	Coupling process	en
dc.subject.other	Grating-assisted optical couplers	en
dc.subject.other	Grating-assisted optical waveguides	en
dc.subject.other	Integral equation formulation	en
dc.subject.other	Optical waveguides	en
dc.title	Integral equation analysis of coupling in symmetric grating-assisted optical waveguides	en
heal.type	journalArticle	en
heal.identifier.primary	10.1364/JOSAA.23.001488	en
heal.identifier.secondary	http://dx.doi.org/10.1364/JOSAA.23.001488	en
heal.language	English	en
heal.publicationDate	2006	en
heal.abstract	The propagation and coupling phenomena in grating-assisted optical couplers are analyzed by using an integral equation formulation and applying an entire-domain Galerkin technique. The proposed method constitutes a special type of the method of moments and provides high numerical stability and controllable accuracy The electric field in the grating region is the unknown quantity and the resulting integral equation is subsequently solved by using Galerkin's method. The propagation constants of the guided waves are computed accurately by determining the singular points of the corresponding system's matrix. Numerical results regarding the propagation constants are presented for various coupler parameters, and the effect of the grating's physical and geometric characteristics on the coupling process is investigated. (C) 2006 Optical Society of America.	en
heal.publisher	OPTICAL SOC AMER	en
heal.journalName	Journal of the Optical Society of America A: Optics and Image Science, and Vision	en
dc.identifier.doi	10.1364/JOSAA.23.001488	en
dc.identifier.isi	ISI:000237755000025	en
dc.identifier.volume	23	en
dc.identifier.issue	6	en
dc.identifier.spage	1488	en
dc.identifier.epage	1502	en