Intermodal interferometer for strain and temperature sensing fabricated in birefringent boron doped microstructured fiber

• Tipo: Artigo em Revista Científica Internacional
• Data: 2011

Autores

Statkiewicz Barabach, G (Autor) Outra; Carvalho, JP (Autor) Outra; Frazao, O (Autor) FCUP; Olszewski, J (Autor) Outra; Mergo, P (Autor) Outra; Santos, JL (Autor) FCUP; Urbanczyk, W (Autor) Outra

Revista

Título: Applied Optics

Vol. 50

Páginas: 3742-3749

ISSN: 1559-128X

Editora: Optical Society of America

Indexação

ISI Web of Knowledge - 15 Citações

Scopus - 19 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Física

Outras Informações

ID Authenticus: P-002-PMV

DOI: 10.1364/ao.50.003742

Abstract (EN): We present a compact in-line fiber interferometric sensor fabricated in a boron doped two-mode highly birefringent microstructured fiber using a CO2 laser. The intermodal interference arises at the fiber output due to coupling between the fundamental and the first order modes occurring at two fiber tapers distant by a few millimeters. The visibility of intermodal interference fringes is modulated by a polarimetric differential signal and varies in response to measurand changes. The proposed interferometer was tested for measurements of the strain and temperature, respectively, in the range of 20-700 degrees C and 0-17 mstrain. The sensitivity coefficients corresponding to fringe displacement and contrast variations are equal respectively for strain -2.51 nm/mstrain and -0.02561/mstrain and for temperature 16.7 pm/degrees C and 5.74 x 10(-5) 1/degrees C. This allows for simultaneous measurements of the two parameters by interrogation of the visibility and the displacement of interference fringes. (C) 2011 Optical Society of America

Idioma: Inglês

Tipo (Avaliação Docente): Científica