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Hazardous gas detection with an integrating sphere in the near infrared
Date
2005
Abstract
This paper describes an optical fibre near infrared Carbon Dioxide sensor. Using an integrating sphere as a test cell, increased path length is achieved due to multiple reflections within the sphere. Carbon dioxide is input into the sphere via an unused optical port. Light from a C + L band ASE source is transmitted through the sphere and any absorption is detected using a near infrared spectrometer. A change in optical intensity was observed at a wavelength of 1.59 um when carbon dioxide was present from which the carbon dioxide concentration can be determined
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Description
peer-reviewed
Publisher
IOP Publishing
Citation
Journal of Physics: Conference Series, Sensors and Applications;15, pp. 250-255
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Funding Information
European Research Council (ERC)