Silicon nitride interferometers for optical sensing with multi-micron dimensions
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.21/15749 |
Resumo: | Increasing 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 dimensions |
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Silicon nitride interferometers for optical sensing with multi-micron dimensionsMulti-micronRib waveguidesInterferometersSplittersCombinersIncreasing 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 dimensionsIOPScienceRCIPLCosta, JoãoAlmeida, DanielFantoni, AlessandroLourenço, PauloVieira, Manuela2023-03-02T15:24:18Z2022-072022-07-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.21/15749engCOSTA, 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. 1-8.1742-659610.1088/1742-6596/2407/1/012005info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-08-03T10:13:38Zoai:repositorio.ipl.pt:10400.21/15749Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:23:22.034726Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Silicon nitride interferometers for optical sensing with multi-micron dimensions |
title |
Silicon nitride interferometers for optical sensing with multi-micron dimensions |
spellingShingle |
Silicon nitride interferometers for optical sensing with multi-micron dimensions Costa, João Multi-micron Rib waveguides Interferometers Splitters Combiners |
title_short |
Silicon nitride interferometers for optical sensing with multi-micron dimensions |
title_full |
Silicon nitride interferometers for optical sensing with multi-micron dimensions |
title_fullStr |
Silicon nitride interferometers for optical sensing with multi-micron dimensions |
title_full_unstemmed |
Silicon nitride interferometers for optical sensing with multi-micron dimensions |
title_sort |
Silicon nitride interferometers for optical sensing with multi-micron dimensions |
author |
Costa, João |
author_facet |
Costa, João Almeida, Daniel Fantoni, Alessandro Lourenço, Paulo Vieira, Manuela |
author_role |
author |
author2 |
Almeida, Daniel Fantoni, Alessandro Lourenço, Paulo Vieira, Manuela |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
RCIPL |
dc.contributor.author.fl_str_mv |
Costa, João Almeida, Daniel Fantoni, Alessandro Lourenço, Paulo Vieira, Manuela |
dc.subject.por.fl_str_mv |
Multi-micron Rib waveguides Interferometers Splitters Combiners |
topic |
Multi-micron Rib waveguides Interferometers Splitters Combiners |
description |
Increasing 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 dimensions |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-07 2022-07-01T00:00:00Z 2023-03-02T15:24:18Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10400.21/15749 |
url |
http://hdl.handle.net/10400.21/15749 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
COSTA, 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. 1742-6596 10.1088/1742-6596/2407/1/012005 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
IOPScience |
publisher.none.fl_str_mv |
IOPScience |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799133506100527104 |