Title :
Laser Temperature Sensor Based on a Fiber Bragg Grating
Author :
Gonzalez-Reyna, Marlen A. ; Alvarado-Mendez, Edgar ; Estudillo-Ayala, Julian M. ; Vargas-Rodriguez, Everardo ; Sosa-Morales, Maria E. ; Sierra-Hernandez, Juan M. ; Jauregui-Vazquez, Daniel ; Rojas-Laguna, Roberto
Author_Institution :
Dept. de Ing. Electron., Univ. de Guanajuato, Guanajuato, Mexico
Abstract :
In this letter, a temperature sensor based on a fiber ring laser is presented. A fiber Bragg grating was used as a sensor head, and a Mach-Zehnder interferometer (MZI) was utilized as a wavelength selective filter to enhance the temperature sensing capability. The MZI was achieved by splicing a piece of photonic crystal fiber between two segments of single-mode fiber. Moreover, it is shown that when the laser emission wavelength is shifted as the temperature is varied, achieving a temperature sensitivity of 18.8 pm/°C at 1550 nm, within the temperature range from 20 °C to 90 °C.
Keywords :
Bragg gratings; Mach-Zehnder interferometers; fibre lasers; fibre optic sensors; holey fibres; measurement by laser beam; photonic crystals; remote sensing by laser beam; ring lasers; temperature sensors; MZI; Mach-Zehnder interferometer; fiber Bragg grating; fiber ring laser; laser emission wavelength; laser temperature sensor; photonic crystal fiber splicing; single-mode fiber; temperature 20 degC to 90 degC; temperature sensing capability; wavelength 1550 nm; wavelength-selective filter; Fiber gratings; Optical fiber sensors; Optical fibers; Temperature measurement; Temperature sensors; Optical fiber; Optical fiber interference; Optical fiber measurement; optical fiber interference; optical fiber measurement;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2015.2406572
