Trimodal waveguide demonstration and its implementation as a high order mode interferometer for sensing application
Carregando...
Data
Título da Revista
ISSN da Revista
Título de Volume
Editor
Universidade Federal de Minas Gerais
Descrição
Tipo
Artigo de periódico
Título alternativo
Primeiro orientador
Membros da banca
Resumo
This 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.
Abstract
Assunto
Interferômetro, Óptica quântica
Palavras-chave
Integrated photonics, Optical sensors, Modal interferometer, POLYMER WAVEGUIDES, Direct laser writer fabrication, integrated optics; modal interferometer; sensor; polymer waveguide; direct laser writer fabrication
Citação
Departamento
Curso
Endereço externo
https://www.mdpi.com/1424-8220/19/12/2821