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Lower bound for the spatial extent of localized modes in photonic-crystal waveguides with small random imperfections

hal.structure.identifierLaboratoire Photonique, Numérique et Nanosciences [LP2N]
dc.contributor.authorFAGGIANI, Rémi
hal.structure.identifierLaboratoire Charles Fabry / Naphel
hal.structure.identifierCentre de recherches Paul Pascal [CRPP]
dc.contributor.authorBARON, Alexandre
hal.structure.identifierLaboratoire Photonique, Numérique et Nanosciences [LP2N]
dc.contributor.authorZANG, Xiaorun
hal.structure.identifierLaboratoire Interdisciplinaire Carnot de Bourgogne [ICB]
dc.contributor.authorLALOUAT, Loïc
hal.structure.identifierSUPA School of Physics and Astronomy [University of St Andrews]
dc.contributor.authorSCHULZ, Sebastian
hal.structure.identifierSUPA School of Physics and Astronomy [University of St Andrews]
dc.contributor.authorO'REGAN, Bryan
hal.structure.identifierLaboratoire Photonique, Numérique et Nanosciences [LP2N]
dc.contributor.authorVYNCK, Kevin
hal.structure.identifierLaboratoire Interdisciplinaire Carnot de Bourgogne [ICB]
dc.contributor.authorCLUZEL, Benoit
hal.structure.identifierLaboratoire Interdisciplinaire Carnot de Bourgogne [ICB]
dc.contributor.authorDE FORNEL, Frédérique
hal.structure.identifierSUPA School of Physics and Astronomy [University of St Andrews]
dc.contributor.authorKRAUSS, Thomas F.
hal.structure.identifierLaboratoire Photonique, Numérique et Nanosciences [LP2N]
hal.structure.identifierLaboratoire Charles Fabry / Naphel
dc.contributor.authorLALANNE, Philippe
dc.date.accessioned2023-05-12T10:56:31Z
dc.date.available2023-05-12T10:56:31Z
dc.date.issued2016-06-01
dc.identifier.issn2045-2322
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/181953
dc.description.abstractEnLight localization due to random imperfections in periodic media is paramount in photonics research. The group index is known to be a key parameter for localization near photonic band edges, since small group velocities reinforce light interaction with imperfections. Here, we show that the size of the smallest localized mode that is formed at the band edge of a one-dimensional periodic medium is driven instead by the effective photon mass, i.e. the flatness of the dispersion curve. Our theoretical prediction is supported by numerical simulations, which reveal that photonic-crystal waveguides can exhibit surprisingly small localized modes, much smaller than those observed in Bragg stacks thanks to their larger effective photon mass. This possibility is demonstrated experimentally with a photonic-crystal waveguide fabricated without any intentional disorder, for which near-field measurements allow us to distinctly observe a wavelength-scale localized mode despite the smallness (~1/1000 of a wavelength) of the fabrication imperfections.
dc.description.sponsorshipSystèmes intelligents intégrés au cœur de la matière - ANR-11-LABX-0001
dc.language.isoen
dc.publisherNature Publishing Group
dc.title.enLower bound for the spatial extent of localized modes in photonic-crystal waveguides with small random imperfections
dc.typeArticle de revue
dc.identifier.doi10.1038/srep27037
dc.subject.halPhysique [physics]/Physique [physics]/Optique [physics.optics]
bordeaux.journalScientific Reports
bordeaux.page27037
bordeaux.volume6
bordeaux.hal.laboratoriesLaboratoire Photonique, Numérique et Nanosciences (LP2N) - UMR 5298*
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionCNRS
bordeaux.peerReviewedoui
hal.identifierhal-01325080
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01325080v1
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