Magnetic field integral equation analysis of surface plasmon scattering by rectangular dielectric channel discontinuities

Chremmos, I

dc.contributor.author	Chremmos, I	en
dc.date.accessioned	2014-03-01T01:33:43Z
dc.date.available	2014-03-01T01:33:43Z
dc.date.issued	2010	en
dc.identifier.issn	1084-7529	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/20554
dc.subject	Surface Plasmon	en
dc.subject	Magnetic Field Integral Equation	en
dc.subject.classification	Optics	en
dc.subject.other	Cauchy's residue theorems	en
dc.subject.other	Channel dimension	en
dc.subject.other	Closed-form expression	en
dc.subject.other	Complex analysis	en
dc.subject.other	Fourier	en
dc.subject.other	Magnetic field integral equations	en
dc.subject.other	matrix	en
dc.subject.other	Numerical results	en
dc.subject.other	Plane-wave expansions	en
dc.subject.other	Radiated Field	en
dc.subject.other	Saddlepoint method	en
dc.subject.other	Sensing applications	en
dc.subject.other	Surface plasmon polaritons	en
dc.subject.other	Surface plasmon scattering	en
dc.subject.other	Wavelength Selectivity	en
dc.subject.other	Galerkin methods	en
dc.subject.other	Green's function	en
dc.subject.other	Integral equations	en
dc.subject.other	Magnetic fields	en
dc.subject.other	Physical optics	en
dc.subject.other	Plasmons	en
dc.subject.other	Refractive index	en
dc.subject.other	Scattering	en
dc.subject.other	Surface plasmon resonance	en
dc.subject.other	Method of moments	en
dc.title	Magnetic field integral equation analysis of surface plasmon scattering by rectangular dielectric channel discontinuities	en
heal.type	journalArticle	en
heal.identifier.primary	10.1364/JOSAA.27.000085	en
heal.identifier.secondary	http://dx.doi.org/10.1364/JOSAA.27.000085	en
heal.language	English	en
heal.publicationDate	2010	en
heal.abstract	The scattering of a surface plasmon polariton (SPP) by a rectangular dielectric channel discontinuity is analyzed through a rigorous magnetic field integral equation method. The scattering phenomenon is formulated by means of the magnetic-type scalar integral equation, which is subsequently treated through an entire-domain Galerkin method of moments (MoM), based on a Fourier-series plane wave expansion of the magnetic field inside the discontinuity. The use of Green's function Fourier transform allows all integrations over the area and along the boundary of the discontinuity to be performed analytically, resulting in a MoM matrix with entries that are expressed as spectral integrals of closed-form expressions. Complex analysis techniques, such as Cauchy's residue theorem and the saddle-point method, are applied to obtain the amplitudes of the transmitted and reflected SPP modes and the radiated field pattern. Through numerical results, we examine the wavelength selectivity of transmission and reflection against the channel dimensions as well as the sensitivity to changes in the refractive index of the discontinuity, which is useful for sensing applications. (C) 2009 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.27.000085	en
dc.identifier.isi	ISI:000273200100012	en
dc.identifier.volume	27	en
dc.identifier.issue	1	en
dc.identifier.spage	85	en
dc.identifier.epage	94	en