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dc.contributor.authorLi, Juntao
dc.contributor.authorO'Faolain, Liam
dc.contributor.authorRey, Isabella Helen
dc.contributor.authorKrauss, Thomas Fraser
dc.identifier.citationLi , J , O'Faolain , L , Rey , I H & Krauss , T F 2011 , ' Four-wave mixing in photonic crystal waveguides : slow light enhancement and limitations ' , Optics Express , vol. 19 , no. 5 , pp. 4458-4463 .
dc.identifier.otherPURE: 22876089
dc.identifier.otherPURE UUID: e331a32b-3887-4452-9fd0-58a0bfdde149
dc.identifier.otherWOS: 000288870300070
dc.identifier.otherScopus: 79952143456
dc.description.abstractWe demonstrate continuous wave four-wave mixing in silicon photonic crystal waveguides of 396 mu m length with a group index of n(g) = 30. The highest observed conversion efficiency is -24 dB for 90 mW coupled input pump power. The key question we address is whether the predicted fourth power dependence of the conversion efficiency on the slowdown factor (eta approximate to S-4) can indeed be observed in this system, and how the conversion efficiency depends on device length in the presence of propagation losses. We find that the expected dependencies hold as long as both realistic losses and the variation of mode shape with slowdown factor are taken into account. Having achieved a good agreement between a simple analytical model and the experiment, we also predict structures that can achieve the same conversion efficiency as already observed in nanowires for the same input power, yet for a device length that is 50 times shorter. (C) 2011 Optical Society of America
dc.relation.ispartofOptics Expressen
dc.rights(c) 2011 Optical Society of America. This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at http://www.opticsinfobase.orgen
dc.subjectNonlinear opticsen
dc.subjectFour-wave mixingen
dc.subjectPhotonic Crystal waveguidesen
dc.subjectQC Physicsen
dc.titleFour-wave mixing in photonic crystal waveguides : slow light enhancement and limitationsen
dc.typeJournal articleen
dc.contributor.sponsorEuropean Commissionen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.contributor.institutionUniversity of St Andrews. Microphotonics and Photonic Crystals Groupen
dc.description.statusPeer revieweden

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