Abstract
A novel distributed optical fibre pH sensor is reported. The principle of operation of the system is based on the detection of time-resolved fluorescence originating at spatially separated sensor sites. Sodium Fluorescein is used as the pH indicator. The fluorophor is immobilised in porous sol-gel films laid over the fibre core. The distributed system has a spatial range of 100 m and a resolution of the order of 1 m. The pH range of the system is observed to be pH 7-11.
Original language | English |
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Pages (from-to) | 1017-1019 |
Number of pages | 3 |
Journal | Journal of Luminescence |
Volume | 72-74 |
DOIs | |
Publication status | Published - Jun 1997 |
Keywords
- Distributed sensor
- Fluorescence
- Optical fibre
- pH
ASJC Scopus subject areas
- Biophysics
- Atomic and Molecular Physics, and Optics
- General Chemistry
- Biochemistry
- Condensed Matter Physics