Center of mass acceleration in coupled nanowaveguides due to transverse optical beating force

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dc.creatorThales Fernando Damasceno Fernandes
dc.creatorCauê Moreno Kersul de Castro Carvalho
dc.creatorPaulo Sérgio Soares Guimarães
dc.creatorBernardo Ruegger Almeida Neves
dc.creatorPierre-Louis de Assis
dc.date.accessioned2023-07-10T12:53:55Z
dc.date.accessioned2025-09-09T00:48:36Z
dc.date.available2023-07-10T12:53:55Z
dc.date.issued2018
dc.identifier.doihttps://doi.org/10.1109/JLT.2017.2784856
dc.identifier.issn15582213
dc.identifier.urihttps://hdl.handle.net/1843/55987
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofJournal of Lightwave Technology
dc.rightsAcesso Restrito
dc.subjectEletromagnetismo
dc.subjectNanofotônica
dc.subjectÓptica
dc.subject.otherWaveguides
dc.subject.otherCoupling
dc.subject.otherOptical force
dc.subject.otherPhotonic circuits
dc.subject.otherNanophotonics
dc.titleCenter of mass acceleration in coupled nanowaveguides due to transverse optical beating force
dc.typeArtigo de periódico
local.citation.epage1614
local.citation.issue9
local.citation.spage1608
local.citation.volume36
local.description.resumoEigenmode optical forces arising in symmetrically coupled waveguides have opposite sign on opposite waveguides and thus can deform the waveguides by changing their relative separation, but cannot change any other degree of freedom on their own. It would be extremely desirable to have a way to act on the center of mass of such a system. In this work, we show that it is possible to do so by injecting a superposition of eigenmodes that are degenerate in frequency and have opposite parity along the desired direction, resulting in beating forces that have the same sign on opposite waveguides and, therefore, act on the center of mass. We have used both the Maxwell stress tensor formalism and the induced dipole force equation to numerically calculate this transverse beating force and have found its magnitude to be comparable to the eigenmode forces. We also show that the longitudinal variation caused by the spatial beating pattern on the time-averaged quantities used in the calculations must be taken into account in order to properly employ the divergence theorem and obtain the correct magnitudes. We then propose a heuristic model that shows good quantitative agreement with the numerical results and may be used as a prototyping tool for accurate and fast computation without relying on expensive numerical computation.
local.identifier.orcidhttps://orcid.org/0000-0003-3868-9029
local.identifier.orcidhttps://orcid.org/0000-0002-3938-8239
local.identifier.orcidhttps://orcid.org/0000-0002-0113-2641
local.identifier.orcidhttps://orcid.org/0000-0003-0464-4754
local.identifier.orcidhttps://orcid.org/0000-0002-1376-6289
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE FÍSICA
local.publisher.initialsUFMG
local.url.externahttps://ieeexplore.ieee.org/document/8226746

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