Simultaneous measurement of liquid level and temperature employing a single uniform FBG

Xuewen Shu; Kate Sugden; Ian Bennion

doi:10.1117/12.833528

5 October 2009 Simultaneous measurement of liquid level and temperature employing a single uniform FBG

Xuewen Shu, Kate Sugden, Ian Bennion

Proceedings Volume 7503, 20th International Conference on Optical Fibre Sensors; 75032S (2009) https://doi.org/10.1117/12.833528
Event: 20th International Conference on Optical Fibre Sensors, 2009, Edinburgh, United Kingdom

Abstract

We report a novel liquid level sensor based on a simple uniform fiber Bragg grating by monitoring both the short-wavelength-loss peaks and its Bragg resonance. The liquid level can be measured from the amplitude changes of the short-wavelength-loss peaks, while temperature can be measured from the wavelength shift of the Bragg resonance. Such a scheme has some advantages including robustness, simplicity, flexibility in choosing sensitivity, and simultaneous temperature measurement capability.

Citation Download Citation

Xuewen Shu, Kate Sugden, and Ian Bennion "Simultaneous measurement of liquid level and temperature employing a single uniform FBG", Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 75032S (5 October 2009); https://doi.org/10.1117/12.833528

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