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Proceedings Paper

Distributed and dynamical Brillouin sensing in optical fibers
Author(s): Yair Peled; Avi Motil; Lior Yaron; Moshe Tur
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Paper 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.

Paper Details

Date Published: 17 May 2011
PDF: 4 pages
Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 775323 (17 May 2011); doi: 10.1117/12.885711
Show Author Affiliations
Yair Peled, Tel-Aviv Univ. (Israel)
Avi Motil, Tel-Aviv Univ. (Israel)
Lior Yaron, Tel-Aviv Univ. (Israel)
Moshe Tur, Tel-Aviv Univ. (Israel)

Published in SPIE Proceedings Vol. 7753:
21st International Conference on Optical Fiber Sensors
Jacques Albert; Wojtek J. Bock, Editor(s)

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