Abstract
An optical fibre sensor has been developed to measure particle concentration in water. The principle of operation is based on light being coupled between two parallel mounted fibres in the vicinity of the sensing region. The optical power is coupled by means of the evanescent field of the multimode fibres. A theoretical description of the light propagation mechanism in the fibre is presented which is extended to include the effect of attenuation of the evanescent wave in the measurand medium. Experimental results are also presented for yeast suspensions in water in the range 0-16 gl-1.
| Original language | English |
|---|---|
| Pages (from-to) | 413-430 |
| Number of pages | 18 |
| Journal | Transactions of the Institute of Measurement & Control |
| Volume | 22 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - Dec 2000 |
| Externally published | Yes |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 6 Clean Water and Sanitation
Keywords
- evanescent wave sensors
- optical fibre sensors
- particle concentration measurement
- polymer optical fibres
- water quality monitoring
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