Preferential-order waveguide grating couplers: A comparative rigorous analysis using the finite- difference time-domain method

Papadopoulos, AD; Glytsis, EN

dc.contributor.author	Papadopoulos, AD	en
dc.contributor.author	Glytsis, EN	en
dc.date.accessioned	2014-03-01T01:34:21Z
dc.date.available	2014-03-01T01:34:21Z
dc.date.issued	2010	en
dc.identifier.issn	0003-6935	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/20704
dc.subject.classification	Optics	en
dc.subject.other	Branching ratio	en
dc.subject.other	Corrugated surfaces	en
dc.subject.other	Design parameters	en
dc.subject.other	Excitation wavelength	en
dc.subject.other	Field formulation	en
dc.subject.other	Grating couplers	en
dc.subject.other	Mode method	en
dc.subject.other	Out-coupling efficiency	en
dc.subject.other	Output couplers	en
dc.subject.other	Rigorous analysis	en
dc.subject.other	Rigorous coupled wave analysis	en
dc.subject.other	Surface-relief grating couplers	en
dc.subject.other	TM polarization	en
dc.subject.other	Volume holographic grating couplers	en
dc.subject.other	Waveguide grating coupler	en
dc.subject.other	Waveguide gratings	en
dc.subject.other	Finite difference time domain method	en
dc.subject.other	Waveguides	en
dc.title	Preferential-order waveguide grating couplers: A comparative rigorous analysis using the finite- difference time-domain method	en
heal.type	journalArticle	en
heal.identifier.primary	10.1364/AO.49.005787	en
heal.identifier.secondary	http://dx.doi.org/10.1364/AO.49.005787	en
heal.language	English	en
heal.publicationDate	2010	en
heal.abstract	We rigorously analyze and compare preferential-order waveguide grating output couplers using the finite-difference time-domain method in the total-field/scattered-field formulation for TE and TM polarizations. Four kinds of preferential-order grating couplers are studied: volume holographic grating couplers, slanted parallelogrammic surface-relief grating couplers, double-corrugated surface-relief grating couplers, and reflecting-stack surface-relief grating couplers. The outcoupling efficiencies and branching ratios of the couplers, revealing their preferentiality, are calculated and compared with the rigorous coupled-wave analysis leaky-mode method. In addition, their performance is examined in terms of the main design parameters and the excitation wavelength. (C) 2010 Optical Society of America	en
heal.publisher	OPTICAL SOC AMER	en
heal.journalName	Applied Optics	en
dc.identifier.doi	10.1364/AO.49.005787	en
dc.identifier.isi	ISI:000283247800013	en
dc.identifier.volume	49	en
dc.identifier.issue	30	en
dc.identifier.spage	5787	en
dc.identifier.epage	5798	en