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Journal of Sensors
Volume 2017 (2017), Article ID 8187451, 6 pages
Research Article

Temperature Sensor Using a Multiwavelength Erbium-Doped Fiber Ring Laser

1UPNA Sensors Group, Department of Electrical and Electronic Engineering, Public University of Navarre, Campus de Arrosadia, Edificio Departamental Los Tejos, s/n, 31006 Pamplona, Spain
2Institute of Smart Cities, R&D Center in Communications Electronics Jeronimo de Ayanz, Public University of Navarre, Campus de Arrosadia, s/n, 31006 Pamplona, Spain

Correspondence should be addressed to Silvia Diaz

Received 14 March 2017; Revised 17 June 2017; Accepted 2 July 2017; Published 31 July 2017

Academic Editor: Stefania Campopiano

Copyright © 2017 Silvia Diaz et al. 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.


A novel temperature sensor is presented based on a multiwavelength erbium-doped fiber ring laser. The laser is comprised of fiber Bragg grating reflectors as the oscillation wavelength selecting filters. The performance of the temperature sensor in terms of both wavelength and laser output power was investigated, as well as the application of this system for remote temperature measurements.