Title :
Realization of high-speed distributed sensing based on Brillouin optical correlation domain analysis
Author :
Zou, Weiwen ; He, Zuyuan ; Hotate, Kazuo
Author_Institution :
Dept. of Electr. Eng. & Inf. Syst., Univ. of Tokyo, Tokyo, Japan
Abstract :
A novel method is proposed to demodulate the output of Brillouin optical correlation domain analysis by using an analog signal processing unit free from the update rate limitation of the conventional method. The distributed Brillouin interaction per pump-probe frequency offset is continuously recorded during linearly sweeping the sensing positions. In experiment, we realize ~20-Hz distributed sensing over the entire 50-m fiber with 5-cm spatial resolution.
Keywords :
Brillouin spectra; fibre optic sensors; high-speed optical techniques; optical correlation; Brillouin optical correlation domain analysis; analog signal processing; high-speed distributed sensing; Brillouin scattering; Fiber nonlinear optics; Frequency modulation; High speed optical techniques; Nonlinear optics; Optical fiber polarization; Optical pumping; Optical scattering; Optical sensors; Optical signal processing; (060.2370) Fiber optics sensors; (290.5900) Scattering, stimulated Brillouin;
Conference_Titel :
Lasers and Electro-Optics, 2009 and 2009 Conference on Quantum electronics and Laser Science Conference. CLEO/QELS 2009. Conference on
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-55752-869-8
Electronic_ISBN :
978-1-55752-869-8
