Grating Coupler Design for Low-Cost Fabrication in Amorphous Silicon Photonic Integrated Circuits

Bibliographic Details
Main Author: Almeida, Daniel
Publication Date: 2024
Other Authors: Lourenço, Paulo, Fantoni, Alessandro, Costa, João, Vieira, Manuela
Format: Article
Language: eng
Source: Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
Download full: http://hdl.handle.net/10362/180260
Summary: grant SFRH/BD/07792/2021. Publisher Copyright: © 2024 by the authors.
id RCAP_05a68b3d7b4767679761e04345deb40f
oai_identifier_str oai:run.unl.pt:10362/180260
network_acronym_str RCAP
network_name_str Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
repository_id_str https://opendoar.ac.uk/repository/7160
spelling Grating Coupler Design for Low-Cost Fabrication in Amorphous Silicon Photonic Integrated Circuitsamorphous silicongrating couplerlight couplingoff-plane couplingphotonic waveguidesilicon-on-insulatorAtomic and Molecular Physics, and OpticsInstrumentationRadiology Nuclear Medicine and imaginggrant SFRH/BD/07792/2021. Publisher Copyright: © 2024 by the authors.Photonic circuits find applications in biomedicine, manufacturing, quantum computing and communications. Photonic waveguides are crucial components, typically having cross-section orders of magnitude inferior when compared with other photonic components (e.g., optical fibers, light sources and photodetectors). Several light-coupling methods exist, consisting of either on-plane (e.g., adiabatic and end-fire coupling) or off-plane methods (e.g., grating and vertical couplers). The grating coupler is a versatile light-transference technique which can be tested at wafer level, not requiring specific fiber terminations or additional optical components, like lenses, polarizers or prisms. This study focuses on fully-etched grating couplers without a bottom reflector, made from hydrogenated amorphous silicon (a-Si:H), deposited over a silica substrate. Different coupler designs were tested, and of these we highlight two: the superimposition of two lithographic masks with different periods and an offset between them to create a random distribution and a technique based on the quadratic refractive-index variation along the device’s length. Results were obtained by 2D-FDTD simulation. The designed grating couplers achieve coupling efficiencies for the TE-like mode over −8 dB (mask overlap) and −3 dB (quadratic variation), at a wavelength of 1550 nm. The coupling scheme considers a 220 nm a-Si:H waveguide and an SMF-28 optical fiber.CTS - Centro de Tecnologia e SistemasUNINOVA-Instituto de Desenvolvimento de Novas TecnologiasFaculdade de Ciências e Tecnologia (FCT)RUNAlmeida, DanielLourenço, PauloFantoni, AlessandroCosta, JoãoVieira, Manuela2025-03-07T22:27:15Z2024-092024-09-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10362/180260eng2304-6732PURE: 107303547https://doi.org/10.3390/photonics11090783info:eu-repo/semantics/openAccessreponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiainstacron:RCAAP2025-03-31T01:56:52Zoai:run.unl.pt:10362/180260Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireinfo@rcaap.ptopendoar:https://opendoar.ac.uk/repository/71602025-05-29T01:14:09.176266Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiafalse
dc.title.none.fl_str_mv Grating Coupler Design for Low-Cost Fabrication in Amorphous Silicon Photonic Integrated Circuits
title Grating Coupler Design for Low-Cost Fabrication in Amorphous Silicon Photonic Integrated Circuits
spellingShingle Grating Coupler Design for Low-Cost Fabrication in Amorphous Silicon Photonic Integrated Circuits
Almeida, Daniel
amorphous silicon
grating coupler
light coupling
off-plane coupling
photonic waveguide
silicon-on-insulator
Atomic and Molecular Physics, and Optics
Instrumentation
Radiology Nuclear Medicine and imaging
title_short Grating Coupler Design for Low-Cost Fabrication in Amorphous Silicon Photonic Integrated Circuits
title_full Grating Coupler Design for Low-Cost Fabrication in Amorphous Silicon Photonic Integrated Circuits
title_fullStr Grating Coupler Design for Low-Cost Fabrication in Amorphous Silicon Photonic Integrated Circuits
title_full_unstemmed Grating Coupler Design for Low-Cost Fabrication in Amorphous Silicon Photonic Integrated Circuits
title_sort Grating Coupler Design for Low-Cost Fabrication in Amorphous Silicon Photonic Integrated Circuits
author Almeida, Daniel
author_facet Almeida, Daniel
Lourenço, Paulo
Fantoni, Alessandro
Costa, João
Vieira, Manuela
author_role author
author2 Lourenço, Paulo
Fantoni, Alessandro
Costa, João
Vieira, Manuela
author2_role author
author
author
author
dc.contributor.none.fl_str_mv CTS - Centro de Tecnologia e Sistemas
UNINOVA-Instituto de Desenvolvimento de Novas Tecnologias
Faculdade de Ciências e Tecnologia (FCT)
RUN
dc.contributor.author.fl_str_mv Almeida, Daniel
Lourenço, Paulo
Fantoni, Alessandro
Costa, João
Vieira, Manuela
dc.subject.por.fl_str_mv amorphous silicon
grating coupler
light coupling
off-plane coupling
photonic waveguide
silicon-on-insulator
Atomic and Molecular Physics, and Optics
Instrumentation
Radiology Nuclear Medicine and imaging
topic amorphous silicon
grating coupler
light coupling
off-plane coupling
photonic waveguide
silicon-on-insulator
Atomic and Molecular Physics, and Optics
Instrumentation
Radiology Nuclear Medicine and imaging
description grant SFRH/BD/07792/2021. Publisher Copyright: © 2024 by the authors.
publishDate 2024
dc.date.none.fl_str_mv 2024-09
2024-09-01T00:00:00Z
2025-03-07T22:27:15Z
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/10362/180260
url http://hdl.handle.net/10362/180260
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 2304-6732
PURE: 107303547
https://doi.org/10.3390/photonics11090783
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.source.none.fl_str_mv reponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron:RCAAP
instname_str FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron_str RCAAP
institution RCAAP
reponame_str Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
collection Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
repository.name.fl_str_mv Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
repository.mail.fl_str_mv info@rcaap.pt
_version_ 1833600885161197568

Similar Items