Title :
Distributed fiber sensors based on Brillouin dynamic gratings
Author_Institution :
Dept. of Phys., Chung-Ang Univ., Seoul, South Korea
Abstract :
High-sensitivity distributed temperature, strain, and birefringence sensors based on Brillouin dynamic grating (BDG) are demonstrated with the configurations of optical time domain analysis or reflectometry in polarization-maintaining fibers and elliptical-core two-mode fibers. The sensitivities to temperature and strain variations are several tens of times larger than those of ordinary Brillouin sensors.
Keywords :
birefringence; diffraction gratings; distributed sensors; fibre optic sensors; light polarisation; optical time-domain reflectometry; strain sensors; temperature sensors; time-domain analysis; BDG; Brillouin dynamic grating; birefringence sensor; distributed fiber sensor; elliptical-core two-mode fiber; high-sensitivity distributed temperature sensor; optical time domain analysis; ordinary Brillouin sensor; polarization-maintaining fiber; strain sensor; time domain reflectometry; Optical fiber polarization; Optical fiber sensors; Probes; Scattering; Strain; Temperature measurement; Gratings; Optical fiber sensors; Stimulated Brillouin scattering;
Conference_Titel :
SENSORS, 2014 IEEE
Conference_Location :
Valencia
DOI :
10.1109/ICSENS.2014.6984956
