Highly sensitive, all solid state fibre optic oxygensensor based on the sol-gelcoating technique
- 1 February 1996
- journal article
- Published by Institution of Engineering and Technology (IET) in Electronics Letters
- Vol. 32 (3) , 240-242
- https://doi.org/10.1049/el:19960104
Abstract
A fibre optic sensor probe based on the fluorescence quenching of an optically active sol-gel coating is demonstrated. The simplified probe design includes a blue LED light source, a photodiode silicon detector and a bifurcated optical fibre. The sensor performance was characterised by a detection limit of <1 ppm of oxygen vapour, a response time of <10 s and a linear dynamic range for oxygen concentrations extending from 1 to 1000 ppm.Keywords
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