Fiber optic sensor for methanol quantification in biodiesel

Marianne S. Kawano; Ricardo Canute Kamikawachi; José L. Fabris; Marcia Müller

doi:10.1117/12.2058114

2 June 2014 Fiber optic sensor for methanol quantification in biodiesel

Marianne S. Kawano, Ricardo Canute Kamikawachi, José L. Fabris, Marcia Müller

Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 91578Z (2014) https://doi.org/10.1117/12.2058114
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain

Abstract

In this work a refractometric sensor for assessment of methanol presence in biodiesel is reported. The transducer relies on the interference between the forward and back propagating modes of a single long period grating, written close to an end-face mirror optical fiber. The sensing method is thermally assisted in order to overcome the drawback caused by the high refractive index (close to the fiber cladding index) of methanol-biodiesel blends at low temperatures. Sensor showed a combined standard uncertainty of 0.6 % v/v of methanol in biodiesel for a confidence level of 68.27%, within the methanol concentration ranging from 0 to 25 % v/v.

Citation Download Citation

Marianne S. Kawano, Ricardo Canute Kamikawachi, José L. Fabris, and Marcia Müller "Fiber optic sensor for methanol quantification in biodiesel", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91578Z (2 June 2014); https://doi.org/10.1117/12.2058114

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