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dc.contributor.authorLuís Alberto Ferreiraen
dc.contributor.authorJ. Van Roosbroecken
dc.contributor.authorFrancisco Araújoen
dc.contributor.authorJ. C. Knighten
dc.contributor.authorJoel Pedro Carvalhoen
dc.contributor.authorH. Lehmannen
dc.contributor.authorH. Bartelten
dc.contributor.authorFilipe Magalhãesen
dc.contributor.authorR. Amezcua-Correaen
dc.contributor.authorJosé Luís Santosen
dc.description.abstractIn 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.en
dc.titleRemote System for Detection of Low-Levels of Methane Based on Photonic Crystal Fibres and Wavelength Modulation Spectroscopyen
Appears in Collections:CAP - Articles in International Journals

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