Temperature- and Strain-Independent Curvature Sensor Based on Multimode Interference

• Tipo: Artigo em Livro de Atas de Conferência Internacional
• Data: 2010

Autores

Susana Silva (Autor) FCUP; Frazao, O (Autor) FCUP; Ferreira, LA (Autor) Outra; Araujo, FM (Autor) Outra; Malcata, FX (Autor) Outra; Santos, JL (Autor) FCUP

Ata de Conferência Internacional

Título: FOURTH EUROPEAN WORKSHOP ON OPTICAL FIBRE SENSORS

Fourth European Workshop on Optical Fibre Sensors

Porto, PORTUGAL, SEP 08-10, 2010

Indexação

ISI Web of Knowledge - 0 Citações

ISI Web of Science

Scopus - 2 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia electrotécnica, electrónica e informática

Outras Informações

ID Authenticus: P-003-AZZ

DOI: 10.1117/12.865028

Abstract (EN): This work describes a fibre optic sensing structure that is sensitive to curvature, and features a low temperature- and strain cross-sensitivity. It is based on multimode interference, and relies on a single mode - step index multimode - single mode fibre configuration. It was observed that the transmitted optical power in such layout becomes highly sensitive to the wavelength of operation and to the length of the multimode fibre. The optical spectrum entertains two dominant loss bands, at wavelengths that have similar responses both to temperature and strain, and different responses to curvature. Based on this result, an interrogation approach is proposed that permits substantial sensitivity to curvature (8.7 +/- 0.1 nm.m) and residual sensitivities to temperature and strain (0.3 +/- 0.1 pm/degrees C and -0.06 +/- 0.01 pm/mu epsilon, respectively).

Idioma: Inglês

Tipo (Avaliação Docente): Científica