Simultaneous displacement and temperature sensing using a white light interrogated low finesse cavity in line with a fiber Bragg grating

• Tipo: Artigo em Revista Científica Internacional
• Data: 1998

Autores

Ferreira, LA (Autor) Outra; Ribeiro, ABL (Autor) Outra; Santos, JL (Autor) FCUP; Farahi, F (Autor) Outra

Revista

Título: Smart Materials and Structures

Vol. 7

Páginas: 189-198

ISSN: 0964-1726

Editora: Institute of Physics Publishing

Indexação

ISI Web of Knowledge - 13 Citações

Scopus - 15 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Outras ciências da engenharia e tecnologias

Outras Informações

ID Authenticus: P-001-88B

DOI: 10.1088/0964-1726/7/2/006

Abstract (EN): A fiber optic sensing system for simultaneous measurement of displacement and temperature is presented. It is based on the use of a low finesse extrinsic Fabry-Perot cavity and a fiber Bragg grating for temperature compensation. A white light tandem interferometric technique is used to recover the signal from the low finesse cavity, providing both fringe visibility and phase measurements. These, together with the fiber grating signal, give two equations that can be used to simultaneously determine temperature and displacement. Theoretical analysis of the sensing scheme is performed. Experimental results are presented which validate theoretical predictions and also demonstrate the feasibility of this sensing system in practical applications.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 10