Title :
Simultaneous Strain and Temperature Measurement Using a Brillouin Scattering Based Superstructure Fiber Grating Filter
Author :
Yongzhi, Zhang ; Zhiyong, Xu ; Rong, Wang ; Hua, Zhou
Author_Institution :
PLA Univ. of Sci. & Tech., Nanjing
fDate :
Aug. 16 2007-July 18 2007
Abstract :
Superstructure fiber grating filter is presented in measuring Brillouin intensity, which is used to suppress the Rayleigh backscatter and separate the Brillouin signal by double-peak design. In this way, Brillouin-based temperature and strain sensor system is achieved. A temperature resolution of 5degC, strain resolution of 500 muepsiv and a spatial resolution of 15 m was obtained along a sensing range of 30 km.
Keywords :
Brillouin spectra; Rayleigh scattering; diffraction gratings; fibre optic sensors; optical fibre filters; strain measurement; strain sensors; temperature measurement; temperature sensors; Brillouin scattering; Brillouin signal; Rayleigh backscatter suppression; double-peak design; strain measurement; superstructure fiber grating filter; temperature measurement; Brillouin scattering; Capacitive sensors; Fiber gratings; Filters; Optical fiber sensors; Signal resolution; Spatial resolution; Strain measurement; Temperature measurement; Temperature sensors; BOTDR; Brillouin scattering; Strain measurement; Superstructure fiber grating; Temperature measurement;
Conference_Titel :
Electronic Measurement and Instruments, 2007. ICEMI '07. 8th International Conference on
Conference_Location :
Xi´an
Print_ISBN :
978-1-4244-1136-8
Electronic_ISBN :
978-1-4244-1136-8
DOI :
10.1109/ICEMI.2007.4351217
