Title :
Temperature and Strain Sensors Based on Integration of Tilted Fiber Bragg Gratings With a Free Spectral Range Matched Interrogation System
Author :
Rahimi, Somayyeh ; Ban, Dayan ; Xiao, Gaozhi ; Zhang, Zhiyi ; Albert, Jacques
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Waterloo, Waterloo, ON, Canada
fDate :
7/1/2009 12:00:00 AM
Abstract :
In this work, a tilted fiber Bragg grating (TFBG) is integrated with a free spectral range matched interrogation (FSRMI) system for temperature and strain sensing applications. The experimental data show that the peak wavelengths of the core and cladding modes of the TFBG shift linearly to longer wavelength with the increase of temperature and strain. Since the FSRMI system allows simultaneous demodulation of multiple wavelengths, the sensing system can be extended by integrating a eta-channel FSRMI with eta TFBGs for multipoint temperature and strain sensing with high precision and fast detection rate.
Keywords :
Bragg gratings; demodulation; fibre optic sensors; integrated optics; optical fibre cladding; strain sensors; temperature sensors; TFBG cladding; TFBG fast detection rate; eta-channel FSRMI; fiber Bragg grating integration; free spectral range matched interrogation system; multiple wavelength demodulation; multipoint temperature; strain sensing application; strain sensor; temperature sensing application; temperature sensor; Band pass filters; Bragg gratings; Capacitive sensors; Magnetic field induced strain; Optical filters; Resonance; Sensor systems; Temperature distribution; Temperature sensors; Wavelength division multiplexing; Free spectral range matched interrogation (FSRMI); multiple-point sensing; temperature and strain sensor; tilted fiber Bragg grating sensors;
Journal_Title :
Sensors Journal, IEEE
DOI :
10.1109/JSEN.2009.2024710
