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Design and optimization of a waveguide/fibre coupler in the visible range

2021-03-05Conference object Restricted access
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dc.contributor.authorLourenço, Paulo
dc.contributor.authorFantoni, Alessandro
dc.contributor.authorCosta, João
dc.contributor.authorFernandes, Miguel
dc.contributor.authorVieira, Manuela
dc.date.accessioned2021-09-22T09:50:18Z
dc.date.available2021-09-22T09:50:18Z
dc.date.issued2021-03-05
dc.descriptionEste trabalho foi financiado pelo Concurso Anual para Projetos de Investigação, Desenvolvimento, Inovação e Criação Artística (IDI&CA) 2020 do Instituto Politécnico de Lisboa. Código de referência IPL/2020/AGE-SPReS/ISEL
dc.description.abstractWhen engineering photonic integrated structures, there will be a time that one must consider coupling out the electromagnetic field to an external device. Often, this coupling is made through a single mode optical fibre. Due to the mismatch in mode field diameters between waveguide and fibre modes, the propagating mode inside the dielectric waveguide must undertake a spot-size conversion. It requires to be radially expanded, often laterally by a tapered waveguide and longitudinally through other means, to match the radial profile of the optical fibre mode. Then, the energy must be coupled out of its propagating path into the plane of the optical fibre, through a structure that possesses such functional purpose. In this work, we describe the design steps and optimization of a silicon nitride waveguide/fibre coupler operating in the visible range. To this end, we start by designing an optimized 3D taper waveguide, using Beam Propagation method, that performs as the spot-size converter. Next, through the Eigen Mode Expansion method, a 2D subwavelength grating is designed and optimized regarding substrate leakage and propagating plane energy coupling out, thus vertically validating the energy distribution of the outgoing profile. The required subwavelength grating apodization is accomplished, once more through the Eigen Mode Expansion method, and by carefully engineering a metamaterial that performs accordingly. The obtained diffraction grating is then expanded horizontally to create a 3D structure and laterally validated through Beam Propagation method. Finally, the whole 3D structure is optimized and validated through Finite Differences Time Domain simulations regarding energy profile coupling out, and overlap integral matching is established with the fibre mode profile.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationLOURENÇO, Paulo; [et al] – Design and optimization of a waveguide/fibre coupler in the visible range. In Proc. SPIE 11680 – Physics and Simulation of Optoelectronic Devices XXIX. Vol. 11680, (2021), pp. 1168019-1- 1168019-14pt_PT
dc.identifier.doi10.1117/12.2582938pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.21/13778
dc.language.isoengpt_PT
dc.publisherSPIE OPTOpt_PT
dc.relationProjeto financiado no âmbito do Concurso de Projetos de Investigação, Desenvolvimento, Inovação & Criação Artística (IDI&CA) financiados pelo Instituto Politécnico de Lisboa. IPL/2020/AGE-SPReS/ISELpt_PT
dc.relationPhotoAKI: Photonic Biosensor for point of care and Early Diagnostics of Acute Kidney Injury
dc.relationPhotonic biosensor for point of care and early diagnostics of acute kidney injury
dc.relationCentre of Technology and Systems
dc.subjectWaveguide/fibre couplerpt_PT
dc.subjectResonant waveguide gratingpt_PT
dc.subjectInverted taperpt_PT
dc.subjectGraded índexpt_PT
dc.subjectMetamaterialpt_PT
dc.subjectBeam propagation methodpt_PT
dc.subjectFinite differences time domainpt_PT
dc.subjectEigen mode expansion methodpt_PT
dc.titleDesign and optimization of a waveguide/fibre coupler in the visible rangept_PT
dc.typeconference object
dspace.entity.typePublication
oaire.awardTitlePhotoAKI: Photonic Biosensor for point of care and Early Diagnostics of Acute Kidney Injury
oaire.awardTitlePhotonic 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/9471 - RIDTI/PTDC%2FNAN-OPT%2F31311%2F2017/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00066%2F2020/PT
oaire.citation.endPage1168019-14pt_PT
oaire.citation.startPage1168019-1pt_PT
oaire.citation.titlePhysics and Simulation of Optoelectronic Devices XXIXpt_PT
oaire.citation.volume11680pt_PT
oaire.fundingStream9471 - RIDTI
oaire.fundingStream6817 - DCRRNI ID
person.familyNameLourenço
person.familyNameFantoni
person.familyNameCosta
person.familyNameFernandes
person.familyNameVieira
person.givenNamePaulo
person.givenNameAlessandro
person.givenNameJoão
person.givenNameMiguel
person.givenNameManuela
person.identifier10792
person.identifier.ciencia-id431F-5C2C-00FB
person.identifier.ciencia-id241E-E87C-552F
person.identifier.ciencia-id2314-A300-7C09
person.identifier.ciencia-idDD1B-859F-EB0B
person.identifier.ciencia-id9516-E25E-BB8E
person.identifier.orcid0000-0002-8785-445X
person.identifier.orcid0000-0002-9938-0351
person.identifier.orcid0000-0002-8058-3685
person.identifier.orcid0000-0002-0765-474X
person.identifier.orcid0000-0002-1150-9895
person.identifier.ridK-1105-2016
person.identifier.ridV-7860-2017
person.identifier.scopus-author-id7006535604
person.identifier.scopus-author-id35810047500
person.identifier.scopus-author-id24450183800
person.identifier.scopus-author-id7202140173
project.funder.identifierhttp://doi.org/10.13039/501100001871
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
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsclosedAccesspt_PT
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