Title :
A fiber-optic Bragg-grating temperature sensor for high-voltage transmission lines
Author :
Romero, Murilo A. ; Calligaris, Alberto, Jr. ; Silva, Milson T Camargo
Author_Institution :
Dept. of Electr. Eng., Sao Paulo Univ., Brazil
Abstract :
In this work a new fiber-optic temperature sensor is proposed. The device is based on Bragg gratings photoinduced on the optical fiber core and it is intended for temperature monitoring of electric power systems and high-voltage transmission lines. In contrast to most published work the sensor does not rely on interferometric techniques. The procedure being proposed employs a dual-wavelength measurement of the optical power being reflected (or transmitted) by a Bragg mirror in order to track temperature variations, simultaneously cancelling spurious readings due to source power fluctuations, fiber attenuation, losses, etc. Preliminary results are presented and a possible experimental implementation is discussed
Keywords :
diffraction gratings; fibre optic sensors; power transmission lines; temperature sensors; dual-wavelength measurement; electric power system; fiber-optic Bragg-grating temperature sensor; high-voltage transmission line; Bragg gratings; Fiber gratings; Optical attenuators; Optical fiber devices; Optical fiber sensors; Optical fibers; Optical interferometry; Power transmission lines; Temperature measurement; Temperature sensors;
Conference_Titel :
Microwave and Optoelectronics Conference, 1997. Linking to the Next Century. Proceedings., 1997 SBMO/IEEE MTT-S International
Conference_Location :
Natal
Print_ISBN :
0-7803-4165-1
DOI :
10.1109/SBMOMO.1997.646792
