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Optical fibre sensors for environmental monitoring of trace gases

Stewart, G. and Whitenett, G.L. and Atherton, K. and Culshaw, B. and Johnstone, W. (2002) Optical fibre sensors for environmental monitoring of trace gases. In: 19th Congress of the International-Commission-for-Optics, 2002-08-25 - 2002-08-30, Florence.

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Abstract

The work described here concerns the development of fibre sensors and networks for monitoring trace gases such as methane, acetylene, carbon dioxide, carbon monoxide and hydrogen sulphide, all of which are important in environmental or safety monitoring. A 45-point fibre sensor network using a single DFB laser source has been installed on a landfill site to assess the distribution of methane generation across the site, with detection levels from <100ppm to 100% methane. The system is currently being extended for carbon dioxide and hydrogen sulphide monitoring. Concurrently, fibre lasers sources are under investigation to provide a single source for several gases using techniques such as mode-locked operation for interrogation of multi-point systems and ring-down spectroscopy for high sensitivity measurements.

Item type: Conference or Workshop Item (Paper)
ID code: 38519
Keywords: fibre sensors , trace gas sensors , methane sensors, near-IR sensors, absorption spectroscopy, fibre laser sensors, optical fibre sensors, environmental monitoring, trace gases, Electrical engineering. Electronics Nuclear engineering
Subjects: Technology > Electrical engineering. Electronics Nuclear engineering
Department: Faculty of Engineering > Electronic and Electrical Engineering
Related URLs:
    Depositing user: Pure Administrator
    Date Deposited: 14 Mar 2012 16:15
    Last modified: 17 Jul 2013 15:14
    URI: http://strathprints.strath.ac.uk/id/eprint/38519

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