Abstract
An optical fiber sensor for the measurement of oxygen in gaseous environments, which is based on the quenching of the fluorescence of a ruthenium complex, is presented. The sensing chemistry is immobilized in a sol-gel based solid matrix that is coated on a tapered optical fiber probe. Oxygen measurement is performed both by phase and fluorescence intensity spectroscopy. Experimental results show that the fluorescence intensity and the lifetime depend both on oxygen and temperature. A scheme for simultaneous determination of the temperature and the oxygen concentration is proposed. Temperature measurement is performed using the excitation radiation and an absorption long pass filter. Preliminary results are presented which show a temperature measurement independent of oxygen and of optical power level.
| Original language | English |
|---|---|
| Pages (from-to) | 279-282 |
| Number of pages | 4 |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 5502 |
| DOIs | |
| Publication status | Published - 26 Oct 2004 |
| Event | Second European Workshop on Optical Fibre Sensors, EWOFS'04 - Santander, Spain Duration: 9 Jun 2004 → 11 Jun 2004 |
Keywords
- Fluorescence quenching
- Optical fiber
- Oxygen sensor
- Simultaneous temperature measurement