✦ LIBER ✦
The use of erbium fiber laser relaxation frequency for sensing refractive index and solute concentration of aqueous solutions
✍ Scribed by H. Arellano-Sotelo; Yu.O. Barmenkov; A.V. Kir'yanov
- Publisher
- John Wiley and Sons
- Year
- 2008
- Tongue
- English
- Weight
- 135 KB
- Volume
- 5
- Category
- Article
- ISSN
- 1612-2011
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✦ Synopsis
We report a novel-principle fiber-laser intra-cavity sensor for measuring refractive index and solute concentration of aqueous solutions. The sensor operation is based on a variation of the laser oscillation relaxation frequency (the measured parameter), sensitive to the intra-cavity loss change. The sensor capacity is demonstrated on the example of measurements of sugar concentration in water. A modeling of the sensor operation is presented, allowing its performance optimization. 1.56 1.32 1.09 f, kHz