Title :
High Sensitivity Fiber Laser Temperature Sensor
Author :
Martinez-Rios, Alejandro ; Anzueto-Sanchez, Gilberto ; Selvas-Aguilar, Romeo ; Castillo Guzman, Arturo Alberto ; Toral-Acosta, Daniel ; Guzman-Ramos, Valentin ; Duran-Ramirez, Victor M. ; Guerrero-Viramontes, J. Ascencion ; Calles-Arriaga, Carlos A.
Author_Institution :
Centro de Investig. en Opt. A.C., Leon, Mexico
Abstract :
This paper presents an erbium-doped fiber laser temperature sensor, which is based on an intracavity fiber filter immersed in glycerol/water solutions. The sensing element is the intracavity fiber filter, consisting of a two-taper fiber Mach-Zehnder interferometer (MZFI). The high refractive index dispersion of glycerol/water solutions with temperature allowed the modification of the MZFI spectral characteristics and hence determines the lasing wavelength. The sensitivity of 1089 pm/°C and a signal-to-noise ratio of 50 dB make the proposed sensor suitable for real applications.
Keywords :
Mach-Zehnder interferometers; fibre optic sensors; measurement by laser beam; optical filters; organic compounds; refractive index measurement; temperature measurement; temperature sensors; water; MZFI spectral characteristics; erbium-doped fiber laser temperature sensor; glycerol-water solution; intracavity fiber filter; noise figure 50 dB; refractive index dispersion; signal-to-noise ratio; two-taper fiber Mach-Zehnder interferometer; Erbium-doped fiber lasers; Optical fiber dispersion; Optical fiber sensors; Optical fibers; Temperature sensors; Fiber lasers; Interferometry; interferometry; optical fiber sensors; temperature sensors;
Journal_Title :
Sensors Journal, IEEE
DOI :
10.1109/JSEN.2014.2377654
