Temperature- and strain-independent torsion sensor using a fiber loop mirror based on suspended twin-core fiber

• Tipo: Artigo em Revista Científica Internacional
• Data: 2010

Autores

O. Frazao (Autor) FCUP; R.M. Silva (Autor) Outra; J. Kobelke (Autor) FCUP; K. Schuster (Autor) FCUP

Revista

Título: Optics Letters

Vol. 35 Nº 16

Páginas: 2777-2779

ISSN: 0146-9592

Editora: Optical Society of America

Indexação

ISI Web of Science

Classificação Científica

FOS: Ciências exactas e naturais > Física

Outras Informações

Abstract (EN): In this Letter, we present a fiber loop mirror configuration based on a suspended twin-core fiber for sensing applications. Using the suspended twin-core fiber, the fringe pattern is due to the differential optical patch of the light in the two cores associated with a refractive index difference of similar to 10(-3), which indicates an advantage of this approach compared with those based on high-birefringent fibers, namely, the possibility of using a small length of fiber. The sensing configuration was characterized for torsion, temperature, and strain. Using the fast Fourier transform technique, it is possible to obtain measurand-induced amplitude variations of the fringe pattern. The results obtained indicate the viability of a temperature- and strain-independent torsion sensor.

Idioma: Inglês

Tipo (Avaliação Docente): Científica