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dc.contributor.authorPanettieri, Danilo
dc.contributor.authorO'Faolain, Liam
dc.contributor.authorGrande, Marco
dc.identifier.citationPanettieri , D , O'Faolain , L & Grande , M 2016 , Control of Q-factor in nanobeam cavities on substrate . in 2016 18th International Conference on Transparent Optical Networks, ICTON 2016 . , 7550638 , IEEE , 18th International Conference on Transparent Optical Networks, ICTON 2016 , Trento , Italy , 10/07/16 .
dc.identifier.otherPURE: 245888702
dc.identifier.otherPURE UUID: 7a289990-a27d-48df-9865-0bcef463a58c
dc.identifier.otherScopus: 84985931267
dc.identifier.otherWOS: 000389537400383
dc.description.abstractIn this paper, we demonstrate how to efficiently control the quality factor of silicon nitride nanobeam cavities, grown on a silica substrate and embedded in an upper cladding, by engineering the nanobeam cross-section and the shape of the periodic holes. We propose optimized configurations that are able to overcome the decreasing of the Q-factor when the nanobeam is embedded in an asymmetric medium. More precisely, we show that the maximum achievable quality factor can be designed and tuned in asymmetric configurations where the upper cladding is particularly different from the substrate one. These optimized configurations exhibit high-Q factor and small mode volume over a wide range of the upper cladding refractive index paving the way for the realization of innovative optical sensors and for the compensation of fabrication tolerances in embedded optical nanobeam cavities.
dc.relation.ispartof2016 18th International Conference on Transparent Optical Networks, ICTON 2016en
dc.rights© 2016, IEEE. This work is made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at /
dc.subjectAsymmetric structuresen
dc.subjectLow contrast waveguidesen
dc.subjectQC Physicsen
dc.subjectTK Electrical engineering. Electronics Nuclear engineeringen
dc.subjectComputer Networks and Communicationsen
dc.subjectElectrical and Electronic Engineeringen
dc.subjectElectronic, Optical and Magnetic Materialsen
dc.titleControl of Q-factor in nanobeam cavities on substrateen
dc.typeConference itemen
dc.contributor.institutionUniversity of St Andrews.School of Physics and Astronomyen
dc.contributor.institutionUniversity of St Andrews.Microphotonics and Photonic Crystals Groupen

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