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

fYear

2007

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ICEMI.2007.4351217

Filename

4351217