Defect assisted coupled resonator optical waveguide: Weak perturbations

Schwelb, O; Chremmos, I

dc.contributor.author	Schwelb, O	en
dc.contributor.author	Chremmos, I	en
dc.date.accessioned	2014-03-01T01:33:06Z
dc.date.available	2014-03-01T01:33:06Z
dc.date.issued	2010	en
dc.identifier.issn	0030-4018	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/20324
dc.subject	Fabry-Pérot resonators	en
dc.subject	Group velocity dispersion	en
dc.subject	Photonic multiring devices	en
dc.subject	Ring resonator	en
dc.subject.classification	Optics	en
dc.subject.other	Complex effects	en
dc.subject.other	Coupled-resonator optical waveguides	en
dc.subject.other	Coupling strengths	en
dc.subject.other	Large groups	en
dc.subject.other	MultiRing	en
dc.subject.other	Narrow resonances	en
dc.subject.other	Ring resonator	en
dc.subject.other	Stopband	en
dc.subject.other	Subluminal	en
dc.subject.other	Superluminal	en
dc.subject.other	Waveguide loss	en
dc.subject.other	Weak perturbation	en
dc.subject.other	Crystal resonators	en
dc.subject.other	Crystal structure	en
dc.subject.other	Defects	en
dc.subject.other	Group velocity dispersion	en
dc.subject.other	Light velocity	en
dc.subject.other	Optical resonators	en
dc.subject.other	Optical waveguides	en
dc.subject.other	Photonic crystals	en
dc.subject.other	Resonance	en
dc.subject.other	Solid state lasers	en
dc.subject.other	Waveguides	en
dc.subject.other	Photonic devices	en
dc.title	Defect assisted coupled resonator optical waveguide: Weak perturbations	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.optcom.2010.05.039	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.optcom.2010.05.039	en
heal.language	English	en
heal.publicationDate	2010	en
heal.abstract	Coupled resonator optical waveguides (CROW) comprised of only a few resonators including one defective element are investigated analytically and numerically. The defect is introduced by perturbing weakly the resonator at the center of the chain, creating a 'cavity' in what is an analogue of a Fabry-Perot resonator or a defect-assisted photonic crystal structure. The device is found to have a very narrow resonance within the original stopband of the unperturbed CROW, and an accompanying extremely large group velocity excursion, that extends over both the subluminal and the superluminal ranges. The properties of the resonance and the magnitude of the group velocity dispersion are found to be conveniently controllable by coupling strength and by the number of resonators used. The perturbation can be caused thermo-optically or electro-optically. The complex effects of waveguide loss are extensively discussed. (C) 2010 Elsevier B.V. All rights reserved.	en
heal.publisher	ELSEVIER SCIENCE BV	en
heal.journalName	Optics Communications	en
dc.identifier.doi	10.1016/j.optcom.2010.05.039	en
dc.identifier.isi	ISI:000280614400019	en
dc.identifier.volume	283	en
dc.identifier.issue	19	en
dc.identifier.spage	3686	en
dc.identifier.epage	3690	en