Plastic optical fibre sensor for quality control in food industry

C. Novo; L. Bilro; R. Ferreira; N. Alberto; P. Antunes; C. Leitão; R. Nogueira; J. L. Pinto

doi:10.1117/12.2025489

20 May 2013 Plastic optical fibre sensor for quality control in food industry

C. Novo, L. Bilro, R. Ferreira, N. Alberto, P. Antunes, C. Leitão, R. Nogueira, J. L. Pinto

Proceedings Volume 8794, Fifth European Workshop on Optical Fibre Sensors; 879411 (2013) https://doi.org/10.1117/12.2025489
Event: Fifth European Workshop on Optical Fibre Sensors, 2013, Krakow, Poland

Abstract

The present work addresses the need for new devices felt in the context of quality control, especially in the food industry. Due to the spectral dependence of the attenuation coefficient, a novel dual-parameter sensor for colour and refractive index was developed and tested. The sensor employs plastic optical fibres to measure the transmitted optical power in three measurement cells each with a different incident wavelength. The performance of the sensor was tested using several dyes at different concentrations and aqueous solutions of glycerine and ethanol. Results show that this technique allows the monitoring of refractive index and colour without cross-sensitivity.

Citation Download Citation

C. Novo, L. Bilro, R. Ferreira, N. Alberto, P. Antunes, C. Leitão, R. Nogueira, and J. L. Pinto "Plastic optical fibre sensor for quality control in food industry", Proc. SPIE 8794, Fifth European Workshop on Optical Fibre Sensors, 879411 (20 May 2013); https://doi.org/10.1117/12.2025489

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