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Sensors 2015, 15(12), 29855-29870; https://doi.org/10.3390/s151229770

Electromagnetic Modelling of Fiber Sensors for Low-Cost and High Sensitivity Temperature Monitoring

Department of Electrical and Information Engineering, Politecnico di Bari, via E. Orabona n. 4, Bari 70125, Italy
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Academic Editor: Elfed Lewis
Received: 21 September 2015 / Revised: 31 October 2015 / Accepted: 23 November 2015 / Published: 30 November 2015
(This article belongs to the Section Physical Sensors)
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Abstract

An accurate design of an innovative fiber optic temperature sensor is developed. The sensor is based on a cascade of three microstructured optical fibers (MOFs). In the first one a suitable cascade of long period gratings is designed into the core. A single mode intermediate and a rare-earth activated Fabry-Perot optical cavity are the other two sensor MOF sections. An exhaustive theoretic feasibility investigation is performed employing computer code. The complete set-up for temperature monitoring can be obtained by utilizing only a low cost pump diode laser at 980 nm wavelength and a commercial optical power detector. The simulated sensitivity S = 315.1 μW/°C and the operation range ΔT = 100 °C is good enough for actual applications. View Full-Text
Keywords: optical fiber; temperature optical sensor; electromagnetic modeling; electromagnetic noise immunity optical fiber; temperature optical sensor; electromagnetic modeling; electromagnetic noise immunity
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Scarcia, W.; Palma, G.; Falconi, M.C.; de Leonardis, F.; Passaro, V.M.N.; Prudenzano, F. Electromagnetic Modelling of Fiber Sensors for Low-Cost and High Sensitivity Temperature Monitoring. Sensors 2015, 15, 29855-29870.

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