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

• Type: Article in International Scientific Journal
• Date: 2009

Authors

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

Journal

Title: Journal of Sensors

Vol. 2009

Pages: 1-10

ISSN: 1687-725X

Publisher: Hindawi

Indexing

ISI Web of Knowledge

Scopus - 36 Citations

INSPEC

Scientific classification

CORDIS: Physical sciences > Physics ; Technological sciences > Engineering > Electrical engineering

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific