Title :
Fiber-optic Bragg-grating differential-temperature sensor
Author :
Kersey, A.D. ; Berkoff, T.A.
Author_Institution :
US Naval Res. Lab., Washington, DC, USA
Abstract :
A differential temperature sensor based on fiber-optic Bragg-grating elements is described. A high sensitivity to thermally induced Bragg wavelength shifts is obtained using an interferometric detection approach. Results presented show a temperature resolution of <0.05 degrees C, corresponding to a Bragg wavelength shift resolution of <6*10/sup -4/ nm.<>
Keywords :
diffraction gratings; fibre optic sensors; temperature measurement; Bragg wavelength shift resolution; differential temperature sensor; fiber-optic Bragg-grating elements; interferometric detection approach; temperature resolution; thermally induced Bragg wavelength shifts; Acoustic sensors; Bragg gratings; Chemical sensors; Fiber gratings; Intelligent sensors; Magnetic sensors; Optical fiber sensors; Optical interferometry; Temperature dependence; Temperature sensors;
Journal_Title :
Photonics Technology Letters, IEEE
