Remote system for detection of low-levels of methane based on photonic crystal fibres and wavelength modulation spectroscopy

• Tipo: Artigo em Revista Científica Internacional
• Data: 2009

Autores

Carvalho, JP (Autor) Outra; Lehmann, H (Autor) Outra; Bartelt, H (Autor) Outra; Magalhes, F (Autor) Outra; Amezcua Correa, R (Autor) Outra; Santos, JL (Autor) FCUP; Roosbroeck, JV (Autor) Outra; Arajo, FM (Autor) Outra; Ferreira, LA (Autor) Outra; Knight, JC (Autor) Outra

Revista

Título: Journal of Sensors

Vol. 2009

Páginas: 1-10

ISSN: 1687-725X

Editora: Hindawi

Indexação

ISI Web of Knowledge

Scopus - 36 Citações

INSPEC

Classificação Científica

CORDIS: Ciências Físicas > Física ; Ciências Tecnológicas > Engenharia > Engenharia electrotécnica

Outras Informações

ID Authenticus: P-007-SDF

DOI: 10.1155/2009/398403

Abstract (EN): In this work we described an optical fibre sensing system for detecting low levels of methane. The properties of hollow-core photonic crystal fibres are explored to have a sensing head with favourable characteristics for gas sensing, particularly in what concerns intrinsic readout sensitivity and gas diffusion time in the sensing structure. The sensor interrogation was performed applying the Wavelength Modulation Spectroscopy technique, and a portable measurement unit was developed with performance suitable for remote detection of low levels of methane. This portable system has the capacity to simultaneously interrogate four remote photonic crystal fibre sensing heads. Copyright © 2009 J. P. Carvalho et al.

Idioma: Inglês

Tipo (Avaliação Docente): Científica