Simple sensing head geometry using fibre Bragg gratings for strain-temperature discrimination

• Tipo: Artigo em Revista Científica Internacional
• Data: 2007

Autores

Frazao, O (Autor) Outra; Marques, L (Autor) Outra; Marques, JM (Autor) Outra; Baptista, JM (Autor) Outra; Santos, JL (Autor) FCUP

Revista

Título: Optics Communications

Vol. 279

Páginas: 68-71

ISSN: 0030-4018

Editora: Elsevier

Indexação

ISI Web of Knowledge - 19 Citações

Scopus - 27 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Física

Outras Informações

ID Authenticus: P-004-6MV

DOI: 10.1016/j.optcom.2007.06.066

Abstract (EN): In this work, a simple sensing head geometry using fibre Bragg gratings for strain and temperature discrimination is presented. The sensing head geometry consists in one fibre with two FBGs bonded with a dummy optical fibre. Due to this new configuration, different strain sensitivities of the two FBGs are obtained (approximate to 65% difference), while temperature sensitivities remain the same. This difference in strain sensitivities is substantially larger than in all previously reported dual grating sensors. The obtained experimental errors were +/- 13.48 mu epsilon and +/- 2.44 degrees C, respectively. It is also demonstrated that this new configuration can be used as a temperature-independent strain sensor.

Idioma: Inglês

Tipo (Avaliação Docente): Científica