Temperature-independent strain sensor based on a tapered Bragg fibre fabricated using a CO2 laser

• Tipo: Artigo em Livro de Atas de Conferência Internacional
• Data: 2016

Autores

Martins, TJM (Autor) Outra; marques, mb (Autor) FCUP; Roy, P (Autor) Outra; Jamier, R (Autor) Outra; Fevrier, S (Autor) Outra; Frazao, O (Autor) FCUP

Ata de Conferência Internacional

Título: SIXTH EUROPEAN WORKSHOP ON OPTICAL FIBRE SENSORS

6th European Workshop on Optical Fibre Sensors

Univ Limerick, Limerick, IRELAND, MAY 31-JUN 03, 2016

Indexação

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Outras Informações

ID Authenticus: P-00K-M2Q

DOI: 10.1117/12.2235239

Abstract (EN): Temperature-independent strain measurement is achieved resorting to a taper fabricated on a Bragg fibre using a CO2 laser. The characteristic bimodal interference of an untapered Bragg fibre is rendered multimode after taper fabrication and the resulting transmission spectra are analysed as temperature and strain change. The intrinsic strain sensitivity exhibited by the Bragg fibre is increased 15 fold after tapering and reaches 22.68 pm/mu epsilon. The difference in wavelength shift promoted by variations in temperature and strain for the two fringes studied is examined and strain sensing with little temperature sensitivity is achieved, presenting a sensitivity of 2.86 pm/mu epsilon, for strain values up to 400 mu epsilon.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 4