Ultra-low loss optical delay lines based on silicon nitride SWG technology

Autores
Tosi, Mauricio; Bustillos, Marvin C.; Sun, Hao; Bulus Rossini, Laureano Andrés; Azaña, Jose; Costanzo Caso, Pablo Alejandro
Año de publicación
2025
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Optical delay lines are essential for microwave photonics and optical signal processing applications. This work presents the design, optimization, and experimental demonstration of compact optical delay lines using subwavelength grating (SWG) structures on a silicon nitride platform. By leveraging the low-loss properties of silicon nitride, our approach reduces the insertion loss compared to silicon-based alternatives. We propose optimized SWG tapers with a loss of 0.04 dB per taper for a 15 µm taper length and SWG bends achieving 0.82 dB loss per 90° bend using 20 µm radius. Our results show a linear relationship between group delay and the SWG duty cycle, offering a tunable delay mechanism without increasing the waveguide length. The fabricated delay lines demonstrate a 1.6 dB/cm loss and significantly improved performance over previously reported silicon-based SWG delay lines. These findings highlight the potential of silicon nitride SWG structures for high-performance, compact optical delay lines in photonic integrated circuits.
Fil: Tosi, Mauricio. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina
Fil: Bustillos, Marvin C.. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina
Fil: Sun, Hao. Institut National de Recherche Scientifique; Canadá
Fil: Bulus Rossini, Laureano Andrés. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
Fil: Azaña, Jose. Institut National de Recherche Scientifique; Canadá
Fil: Costanzo Caso, Pablo Alejandro. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
Materia
Photonic integrated circuits
Silicon photonics
Delay line filter
optical signal processing
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/274283
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Ultra-low loss optical delay lines based on silicon nitride SWG technologyTosi, MauricioBustillos, Marvin C.Sun, HaoBulus Rossini, Laureano AndrésAzaña, JoseCostanzo Caso, Pablo AlejandroPhotonic integrated circuitsSilicon photonicsDelay line filteroptical signal processinghttps://purl.org/becyt/ford/2.2https://purl.org/becyt/ford/2Optical delay lines are essential for microwave photonics and optical signal processing applications. This work presents the design, optimization, and experimental demonstration of compact optical delay lines using subwavelength grating (SWG) structures on a silicon nitride platform. By leveraging the low-loss properties of silicon nitride, our approach reduces the insertion loss compared to silicon-based alternatives. We propose optimized SWG tapers with a loss of 0.04 dB per taper for a 15 µm taper length and SWG bends achieving 0.82 dB loss per 90° bend using 20 µm radius. Our results show a linear relationship between group delay and the SWG duty cycle, offering a tunable delay mechanism without increasing the waveguide length. The fabricated delay lines demonstrate a 1.6 dB/cm loss and significantly improved performance over previously reported silicon-based SWG delay lines. These findings highlight the potential of silicon nitride SWG structures for high-performance, compact optical delay lines in photonic integrated circuits.Fil: Tosi, Mauricio. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; ArgentinaFil: Bustillos, Marvin C.. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; ArgentinaFil: Sun, Hao. Institut National de Recherche Scientifique; CanadáFil: Bulus Rossini, Laureano Andrés. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; ArgentinaFil: Azaña, Jose. Institut National de Recherche Scientifique; CanadáFil: Costanzo Caso, Pablo Alejandro. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; ArgentinaOptical Society of America2025-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/274283Tosi, Mauricio; Bustillos, Marvin C.; Sun, Hao; Bulus Rossini, Laureano Andrés; Azaña, Jose; et al.; Ultra-low loss optical delay lines based on silicon nitride SWG technology; Optical Society of America; Optics Express; 33; 16; 7-2025; 1-121094-4087CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://opg.optica.org/abstract.cfm?URI=oe-33-16-33351info:eu-repo/semantics/altIdentifier/doi/10.1364/OE.561965info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-11-12T09:34:39Zoai:ri.conicet.gov.ar:11336/274283instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-11-12 09:34:39.513CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Ultra-low loss optical delay lines based on silicon nitride SWG technology
title Ultra-low loss optical delay lines based on silicon nitride SWG technology
spellingShingle Ultra-low loss optical delay lines based on silicon nitride SWG technology
Tosi, Mauricio
Photonic integrated circuits
Silicon photonics
Delay line filter
optical signal processing
title_short Ultra-low loss optical delay lines based on silicon nitride SWG technology
title_full Ultra-low loss optical delay lines based on silicon nitride SWG technology
title_fullStr Ultra-low loss optical delay lines based on silicon nitride SWG technology
title_full_unstemmed Ultra-low loss optical delay lines based on silicon nitride SWG technology
title_sort Ultra-low loss optical delay lines based on silicon nitride SWG technology
dc.creator.none.fl_str_mv Tosi, Mauricio
Bustillos, Marvin C.
Sun, Hao
Bulus Rossini, Laureano Andrés
Azaña, Jose
Costanzo Caso, Pablo Alejandro
author Tosi, Mauricio
author_facet Tosi, Mauricio
Bustillos, Marvin C.
Sun, Hao
Bulus Rossini, Laureano Andrés
Azaña, Jose
Costanzo Caso, Pablo Alejandro
author_role author
author2 Bustillos, Marvin C.
Sun, Hao
Bulus Rossini, Laureano Andrés
Azaña, Jose
Costanzo Caso, Pablo Alejandro
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Photonic integrated circuits
Silicon photonics
Delay line filter
optical signal processing
topic Photonic integrated circuits
Silicon photonics
Delay line filter
optical signal processing
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.2
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Optical delay lines are essential for microwave photonics and optical signal processing applications. This work presents the design, optimization, and experimental demonstration of compact optical delay lines using subwavelength grating (SWG) structures on a silicon nitride platform. By leveraging the low-loss properties of silicon nitride, our approach reduces the insertion loss compared to silicon-based alternatives. We propose optimized SWG tapers with a loss of 0.04 dB per taper for a 15 µm taper length and SWG bends achieving 0.82 dB loss per 90° bend using 20 µm radius. Our results show a linear relationship between group delay and the SWG duty cycle, offering a tunable delay mechanism without increasing the waveguide length. The fabricated delay lines demonstrate a 1.6 dB/cm loss and significantly improved performance over previously reported silicon-based SWG delay lines. These findings highlight the potential of silicon nitride SWG structures for high-performance, compact optical delay lines in photonic integrated circuits.
Fil: Tosi, Mauricio. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina
Fil: Bustillos, Marvin C.. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina
Fil: Sun, Hao. Institut National de Recherche Scientifique; Canadá
Fil: Bulus Rossini, Laureano Andrés. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
Fil: Azaña, Jose. Institut National de Recherche Scientifique; Canadá
Fil: Costanzo Caso, Pablo Alejandro. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
description Optical delay lines are essential for microwave photonics and optical signal processing applications. This work presents the design, optimization, and experimental demonstration of compact optical delay lines using subwavelength grating (SWG) structures on a silicon nitride platform. By leveraging the low-loss properties of silicon nitride, our approach reduces the insertion loss compared to silicon-based alternatives. We propose optimized SWG tapers with a loss of 0.04 dB per taper for a 15 µm taper length and SWG bends achieving 0.82 dB loss per 90° bend using 20 µm radius. Our results show a linear relationship between group delay and the SWG duty cycle, offering a tunable delay mechanism without increasing the waveguide length. The fabricated delay lines demonstrate a 1.6 dB/cm loss and significantly improved performance over previously reported silicon-based SWG delay lines. These findings highlight the potential of silicon nitride SWG structures for high-performance, compact optical delay lines in photonic integrated circuits.
publishDate 2025
dc.date.none.fl_str_mv 2025-07
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/274283
Tosi, Mauricio; Bustillos, Marvin C.; Sun, Hao; Bulus Rossini, Laureano Andrés; Azaña, Jose; et al.; Ultra-low loss optical delay lines based on silicon nitride SWG technology; Optical Society of America; Optics Express; 33; 16; 7-2025; 1-12
1094-4087
CONICET Digital
CONICET
url http://hdl.handle.net/11336/274283
identifier_str_mv Tosi, Mauricio; Bustillos, Marvin C.; Sun, Hao; Bulus Rossini, Laureano Andrés; Azaña, Jose; et al.; Ultra-low loss optical delay lines based on silicon nitride SWG technology; Optical Society of America; Optics Express; 33; 16; 7-2025; 1-12
1094-4087
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://opg.optica.org/abstract.cfm?URI=oe-33-16-33351
info:eu-repo/semantics/altIdentifier/doi/10.1364/OE.561965
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Optical Society of America
publisher.none.fl_str_mv Optical Society of America
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.24909

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