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FIBRE-OPTIC SENSORS FOR CHEMICAL PARAMETERS OF INTEREST IN BIOTECHNOLOGY
Wolfbeis, Otto S.
Wolfbeis, Otto S.
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Issue Date
1987
Submitted date
2023-08-30
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Abstract
Optical fibres can be used for remotely sensing chemical and physico-chemical parameters
that are of interest for proper management of bio- processes as they occur, for
instance, in bioreactors. Optical sensors can offer advantages over electrochemical
ones because of the lack of reference cells, the immunity towards electromagnetic
interferences, and the possibility of heat sterilisation. In this contribution, the
principles of waveguide spectroscopy are briefly outlined, and waveguide sensors are
classified according to their working principles.
The most usual approach in the development of fibre-optic sensors is to provide the
end of an optical fibre with a suitable indicator chemistry or a material that
responds to the parameter of interest. In contact with the sample, the intensity of
reflected, scattered, or re-emitted light is the analytical signal.
Representative examples of fibre-optic sensors for oxygen, pH, carbon dioxide,
ammonia, electrolytes, and redox status are given. Recently developed sensors for
glucose and enzymes shall also be considered. Finally, potential fields of application
are presented, and current trends and concepts discussed.
Citation
Biosensors International Workshop 1987, 197 - 206
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Type
Book chapter
conference paper
conference paper
Language
en
Description
Series/Report no.
GBF Monographs, Volume 10
ISSN
0930-4320
EISSN
ISBN
0-89573-683-7
3-527-26801-4
3-527-26801-4
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Attribution-NonCommercial-ShareAlike 4.0 International