An optical fibre salinity sensor based on fluorescence quenching mechanism

T. Hien Nguyen; Yong Zhao; Tong Sun; Kenneth T. V. Grattan

doi:10.1117/12.969863

7 November 2012 An optical fibre salinity sensor based on fluorescence quenching mechanism

T. Hien Nguyen, Yong Zhao, Tong Sun, Kenneth T. V. Grattan

Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 842161 (2012) https://doi.org/10.1117/12.969863
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China

Abstract

Salinity measurement is very important for many industrial applications and in this work an intrinsic optical fibre-based salinity sensor is developed specifically for the detection of the salt water concentrations. The sensing principle was based on the fluorescence quenching as a result of the interaction between the sensing material incorporated into the tip of an optical fibre and target chloride ions in salt solutions. The peak intensity of the fluorescent signal generated has shown to change with the change of the salinity of the solutions measured. The experimental data obtained are in good agreement with a modified theoretical model when the hydrophobicity of the silicone supporting material is taken into account, thus demonstrating a clear feasibility of the developed sensor system of this type.

Citation Download Citation

T. Hien Nguyen, Yong Zhao, Tong Sun, and Kenneth T. V. Grattan "An optical fibre salinity sensor based on fluorescence quenching mechanism", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 842161 (7 November 2012); https://doi.org/10.1117/12.969863

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