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Silicon nitride interferometers for optical sensing with multi-micron dimensions

2022-07Journal article Open access
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dc.contributor.authorCosta, João
dc.contributor.authorAlmeida, Daniel
dc.contributor.authorFantoni, Alessandro
dc.contributor.authorLourenço, Paulo
dc.contributor.authorVieira, Manuela
dc.date.accessioned2023-03-02T15:24:18Z
dc.date.available2023-03-02T15:24:18Z
dc.date.issued2022-07
dc.description.abstractIncreasing the size of the smallest features of Photonic Integrated Circuits (PICs) to multi-micron dimensions can be advantageous to avoid expensive and complex lithographic steps in the fabrication process. In applications where extremely reduced chip size is not a requirement, the design of devices with multi-micron dimensions is potential interesting to avoid the need for e-beam lithography. Another benefit is that making the dimensions larger reduces the effect of lithographic imperfections such as waveguide surface roughness. However, the benefits do not come without limitations. Coupling the light in and out of the circuit is more challenging since diffraction gratings are not available when designing for such large dimensions. Circuit bends must have a larger radius of curvature and the existence of multimode propagation conditions can have detrimental impact in the performance of several devices, such as interferometers. In this study we perform simulations of the coupling between a lensed multimode optical fiber and a multi-micron a-SiN:H rib waveguide. Light coupling efficiency is analyzed as a function of distance variations using the FDTD method and compared with coupling to a strip waveguide. Moreover, we use numerical simulations to study the performance of a Mach-Zehnder interferometer sensitive to refractive index variations. Both the interferometer, splitters and combiners are designed with multi-micron dimensionspt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationCOSTA, João; [et al] – Silicon nitride interferometers for optical sensing with multi-micron dimensions. In Journal of Physics: Conference Series 2407 (Fifth International Conference on Applications of Optics and Photonics – A AOP2022). Guimarães, Portugal: IOPScience, 2022. ISSN 1742-6596. Vol. 2407. Pp. 1-8.pt_PT
dc.identifier.doi10.1088/1742-6596/2407/1/012005pt_PT
dc.identifier.issn1742-6596
dc.identifier.urihttp://hdl.handle.net/10400.21/15749
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherIOPSciencept_PT
dc.relationIPL/2021/wavesensor_ISELpt_PT
dc.relationIPL/2021/MuMiAS 2D_ISELpt_PT
dc.relationSFRH/BD/07792/2021pt_PT
dc.relationPhotoAKI: Photonic Biosensor for point of care and Early Diagnostics of Acute Kidney Injury
dc.relationCentre of Technology and Systems
dc.relation.publisherversionhttps://iopscience.iop.org/article/10.1088/1742-6596/2407/1/012005pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectMulti-micronpt_PT
dc.subjectRib waveguidespt_PT
dc.subjectInterferometerspt_PT
dc.subjectSplitterspt_PT
dc.subjectCombinerspt_PT
dc.titleSilicon nitride interferometers for optical sensing with multi-micron dimensionspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitlePhotoAKI: Photonic Biosensor for point of care and Early Diagnostics of Acute Kidney Injury
oaire.awardTitleCentre of Technology and Systems
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBD%2F144833%2F2019/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00066%2F2020/PT
oaire.citation.conferencePlaceGuimarãespt_PT
oaire.citation.endPage8pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titleJournal of Physics: Conference Seriespt_PT
oaire.citation.volume2407pt_PT
oaire.fundingStream6817 - DCRRNI ID
person.familyNameCosta
person.familyNameGonçalves Pita Santos de Almeida
person.familyNameLourenço
person.familyNameVieira
person.givenNameJoão
person.givenNameDaniel
person.givenNamePaulo
person.givenNameManuela
person.identifierhttps://scholar.google.com/citations?user=FHi2JLIAAAAJ&hl=pt-PT
person.identifier10792
person.identifier.ciencia-id2314-A300-7C09
person.identifier.ciencia-idBC13-279E-D2D7
person.identifier.ciencia-id431F-5C2C-00FB
person.identifier.ciencia-id9516-E25E-BB8E
person.identifier.orcid0000-0002-8058-3685
person.identifier.orcid0000-0003-2228-2507
person.identifier.orcid0000-0002-8785-445X
person.identifier.orcid0000-0002-1150-9895
person.identifier.ridV-7860-2017
person.identifier.scopus-author-id35810047500
person.identifier.scopus-author-id7202140173
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationa64d2f5a-2af3-4d5b-adb4-7de0edad0f84
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