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Proceedings Paper

Mid-infrared laser/fibre-optic methanometer
Author(s): Henryk Passia
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Paper Abstract

The structure and operation principle of the infrared (3.39 μm) laser methanometer have been presented. Fluoride glass optical cables are used in the instrument. Methane detection characteristics of the 3.39 μm absorption line as compared to those at 1.67μm and 1.33μm in the overtone range have been discussed. The dual wavelength (3.39/0.63μm) laser/fibre-optic methane measuring system for measuring emission from extended methane generators has been presented and the related phenomena, such as mutual extinction and refraction of both versions of equipment, in particular to coal mining and environmental monitoring have been discussed.

Paper Details

Date Published: 9 November 2000
PDF: 4 pages
Proc. SPIE 4185, Fourteenth International Conference on Optical Fiber Sensors, 418549 (9 November 2000); doi: 10.1117/12.2302296
Show Author Affiliations
Henryk Passia, Central Mining Institute (Poland)

Published in SPIE Proceedings Vol. 4185:
Fourteenth International Conference on Optical Fiber Sensors
A. G. Mignani; H. C. Lefèvre, Editor(s)

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