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Experimental Study of a Real-Time and Highly Sensitive Fiber-Optic Porous Silicon Temperature Sensing Probe

Caroselli, R; Martin Sanchez, D; Ponce-Alcantara, S; Prats Quilez, F; Torrijos Moran, L; Garcia-Ruperez, J; (2018) Experimental Study of a Real-Time and Highly Sensitive Fiber-Optic Porous Silicon Temperature Sensing Probe. IEEE Sensors Journal , 18 (13) pp. 5361-5367. 10.1109/JSEN.2018.2824349. Green open access

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Abstract

We report the development of a temperature sensing probe created as a result of the combination of an optical fiber and a porous silicon microcavity (PSMC). After determining the physical parameters of the PSMC to achieve the required porous sensing structure, it was fabricated by electrochemically etching a silicon wafer. A 1-mm^{2} PSMC piece was attached to the tip of an optical fiber so that temperature variations can be monitored in real-time exactly on that point. First, the performance of the PSMC sensor probe was characterized in a stable environment as water, obtaining a sensitivity around 110 pm/°C and a resolution in the 10^{-4}°C range. Afterward, the temperature transmission dynamics in air environment were studied.

Type: Article
Title: Experimental Study of a Real-Time and Highly Sensitive Fiber-Optic Porous Silicon Temperature Sensing Probe
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/JSEN.2018.2824349
Publisher version: https://doi.org/10.1109/JSEN.2018.2824349
Language: English
Additional information: © The Authors. This work is licensed under a Creative Commons Attribution 3.0 License. For more information, see (http://creativecommons.org/licenses/by/3.0/)
Keywords: Fiber-optic sensor, porous silicon, Bragg reflector, microcavity, temperature monitoring
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Med Phys and Biomedical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/10082998
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