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dc.contributor.authorHøvik, Jens
dc.contributor.authorYadav, Mukesh
dc.contributor.authorNoh, Jong Wook
dc.contributor.authorAksnes, Astrid
dc.date.accessioned2021-01-07T11:58:19Z
dc.date.available2021-01-07T11:58:19Z
dc.date.issued2020-07-29
dc.description.abstractA highly sensitive integrated photonic transducer is designed by utilizing asymmetric long-period gratings on a silicon waveguide. These gratings are formed by periodic perturbation of the waveguide width, leading to coupling between the fundamental mode and the 1st order asymmetric leaky mode. The coupled modes are studied via finite-element and finite-difference time-domain methods. Only a single fabrication step is required to realize this novel design. The device is utilized as a refractive index sensor in liquid, yielding a sensitivity of 5078 nm/RIU. The design is a unique combination of being highly sensitive, easily fabricated and highly compact.en_US
dc.identifier.citationHøvik J, Yadav M, Noh JW, Aksnes AA. Waveguide asymmetric long-period grating couplers as refractive index sensors. Optics Express. 2020;28(16):23936-23949en_US
dc.identifier.cristinIDFRIDAID 1855812
dc.identifier.doihttps://doi.org/10.1364/OE.397561
dc.identifier.issn1094-4087
dc.identifier.urihttps://hdl.handle.net/10037/20192
dc.language.isoengen_US
dc.publisherOptical Society of Americaen_US
dc.relation.journalOptics Express
dc.relation.projectIDinfo:eu-repo/grantAgreement/RCN/FORINFRA/245963/Norway/Norwegian Micro- and Nanofabrication Facility II//en_US
dc.relation.projectIDinfo:eu-repo/grantAgreement/RCN/BIOTEK2021/248869/Norway/DL: Lab-on-a-chip Biophotonic Sensor Platform for Diagnostics//en_US
dc.relation.urihttps://www.osapublishing.org/oe/fulltext.cfm?uri=oe-28-16-23936&id=433946
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2020 The Author(s)en_US
dc.subjectVDP::Mathematics and natural science: 400::Physics: 430en_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Fysikk: 430en_US
dc.titleWaveguide asymmetric long-period grating couplers as refractive index sensorsen_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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