Trimodal waveguide demonstration and its implementation as a high order mode interferometer for sensing application

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dc.creatorJhonattan Córdoba Ramírez
dc.creatorLucas H. Gabrielli
dc.creatorLaura M. Lechuga
dc.creatorHugo E. Hernandez-Figueroa
dc.date.accessioned2025-05-15T13:23:51Z
dc.date.accessioned2025-09-08T23:03:40Z
dc.date.available2025-05-15T13:23:51Z
dc.date.issued2019
dc.identifier.doihttps://doi.org/10.3390/s19122821
dc.identifier.issn14248220
dc.identifier.urihttps://hdl.handle.net/1843/82290
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofSensors
dc.rightsAcesso Aberto
dc.subjectInterferômetro
dc.subjectÓptica quântica
dc.subject.otherIntegrated photonics
dc.subject.otherOptical sensors
dc.subject.otherModal interferometer
dc.subject.otherPOLYMER WAVEGUIDES
dc.subject.otherDirect laser writer fabrication
dc.subject.otherintegrated optics; modal interferometer; sensor; polymer waveguide; direct laser writer fabrication
dc.titleTrimodal waveguide demonstration and its implementation as a high order mode interferometer for sensing application
dc.typeArtigo de periódico
local.citation.epage2832
local.citation.issue12
local.citation.spage2821
local.citation.volume19
local.description.resumoThis work implements and demonstrates an interferometric transducer based on a trimodal optical waveguide concept. The readout signal is generated from the interference between the fundamental and second-order modes propagating on a straight polymer waveguide. Intuitively, the higher the mode order, the larger the fraction of power (evanescent field) propagating outside the waveguide core, hence the higher the sensitivity that can be achieved when interfering against the strongly confined fundamental mode. The device is fabricated using the polymer SU-8 over a SiO2 substrate and shows a free spectral range of 20.2 nm and signal visibility of 5.7 dB, reaching a sensitivity to temperature variations of 0.0586 dB/°C. The results indicate that the proposed interferometer is a promising candidate for highly sensitive, compact and low-cost photonic transducer for implementation in different types of sensing applications, among these, point-of-care.
local.publisher.countryBrasil
local.publisher.departmentENG - DEPARTAMENTO DE ENGENHARIA ELETRÔNICA
local.publisher.initialsUFMG
local.url.externahttps://www.mdpi.com/1424-8220/19/12/2821

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