Title :
Influence of Temperature Gradient on Measurement Accuracy of BOTDR System
Author :
Shang, Qiu-Feng ; Liu, Jing ; Li, Yong-Qian
Author_Institution :
North China Electr. Power Univ., Baoding
Abstract :
Brllouin optical time domain reflectometry is one of the popular methods of Brillouin distributed fiber sensing measurement. The spatial resolution of BOTDR system could reach meter order. For many applications, the temperature distribution of object is not a constant in the spatial resolution, and temperature gradient exists inside the scope. The relationship between Brillouin backscattering spectrum with temperature gradient is analyzed, and the error of temperature determination caused by the temperature gradient is investigated.
Keywords :
Brillouin spectra; distributed sensors; fibre optic sensors; gradient methods; optical time-domain reflectometry; temperature distribution; BOTDR system; Brillouin backscattering spectrum; Brillouin distributed fiber sensing measurement; Brllouin optical time domain reflectometry; measurement accuracy; spatial resolution; temperature determination; temperature distribution; temperature gradient; Brillouin scattering; Frequency; Optical fibers; Optical scattering; Optical sensors; Power measurement; Spatial resolution; Temperature measurement; Temperature sensors; Time measurement;
Conference_Titel :
Intelligent Systems and Applications, 2009. ISA 2009. International Workshop on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-3893-8
Electronic_ISBN :
978-1-4244-3894-5
DOI :
10.1109/IWISA.2009.5072913
