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Proceedings Article

Distributed and dynamical Brillouin sensing in optical fibers

[+] Author Affiliations
Yair Peled, Avi Motil, Lior Yaron, Moshe Tur

Tel-Aviv Univ. (Israel)

Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 775323 (May 17, 2011); doi:10.1117/12.885711
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From Conference Volume 7753

  • 21st International Conference on Optical Fiber Sensors
  • Ottawa, Canada | May 15, 2011

abstract

Employing stimulated Brillouin scattering (SBS), we present a novel method for the quasi-simultaneous distributed measurement of dynamic strain along an entire Brillouin-inhomogeneous optical fiber. Following classical mapping of the temporally slowly varying Brillouin gain spectrum (BGS) along the fiber, we use a specially synthesized and adaptable probe wave to always work on the slope of the local BGS, allowing a single pump pulse to sample fast strain variations along the entire fiber. Strain vibrations of tens of Hertz and up to 2KHz are demonstrated, simultaneously (i.e., using the same pump pulse) measured on two different segments of the fiber, having different static Brillouin shifts.

© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation

Yair Peled ; Avi Motil ; Lior Yaron and Moshe Tur
"Distributed and dynamical Brillouin sensing in optical fibers", Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 775323 (May 17, 2011); doi:10.1117/12.885711; http://dx.doi.org/10.1117/12.885711


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