Graphene-based electro-optical modulators integrated into polymer waveguide with three dielectric materials proposals

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dc.contributor.authorCamacho W.A.
dc.contributor.authorThoroh De Souza E.A.
dc.contributor.authorSaito L.A.M.
dc.date.accessioned2024-03-12T23:54:03Z
dc.date.available2024-03-12T23:54:03Z
dc.date.issued2019
dc.description.abstract© 2018 IEEE. This work presents an analysis of electro-optical modulators integrated into polymer waveguides, which operates over electro-Absorption effect through graphene. This study focus in three different dielectric materials for the capacitive structure in the device such as silicon nitride, Si 3 N 4 , hafnium oxide, HfO 2 and boron nitride, hBN. By varying the thickness of the dielectric material, it was possible to improve the extinction ratio, modulation frequency and reduce the switching voltages requirements. By considering a bottom cladding, it was possible to increase the light interaction with the graphene and obtain higher modulation frequencies. In the case of the device with HfO 2 , it was possible to obtain the highest extinction rate of 0.117 dB/μm with a dielectric thickness of 50 nm. For the model with the hBN thickness layer of 50 nm, the maximum operation frequency was 35 GHz, considering a device length of 27 μm. The condition with the minimum voltage requirements was obtained with HfO 2 , which the value switching was between 2.5 and 5 V. Although the results with Si 3 N 4 are not the best, it is a good option when the device project try to match all the design requirements.
dc.identifier.doi10.1109/SBFoton-IOPC.2018.8610881
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/35317
dc.relation.ispartof2018 SBFoton International Optics and Photonics Conference, SBFoton IOPC 2018
dc.rightsAcesso Restrito
dc.subject.otherlanguagedielectric materials
dc.subject.otherlanguageelectro-Absorption modulator
dc.subject.otherlanguageGraphene-modulator
dc.subject.otherlanguagepolymer waveguide
dc.titleGraphene-based electro-optical modulators integrated into polymer waveguide with three dielectric materials proposals
dc.typeArtigo de evento
local.scopus.citations1
local.scopus.eid2-s2.0-85061985013
local.scopus.subjectCapacitive structure
local.scopus.subjectDielectric thickness
local.scopus.subjectElectro-absorption effects
local.scopus.subjectElectrooptical modulators
local.scopus.subjectModulation frequencies
local.scopus.subjectOperation frequency
local.scopus.subjectPolymer waveguides
local.scopus.subjectVoltage requirement
local.scopus.updated2024-05-01
local.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85061985013&origin=inward
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