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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 9 — May. 6, 2013
  • pp: 10697–10705

Monitoring the propagation of mechanical waves using an optical fiber distributed and dynamic strain sensor based on BOTDA

Yair Peled, Avi Motil, Iddo Kressel, and Moshe Tur  »View Author Affiliations


Optics Express, Vol. 21, Issue 9, pp. 10697-10705 (2013)
http://dx.doi.org/10.1364/OE.21.010697


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Abstract

We report a Brillouin-based fully distributed and dynamic monitoring of the strain induced by a propagating mechanical wave along a 20m long composite strip, to which surface a single-mode optical fiber was glued. Employing a simplified version of the Slope-Assisted Brillouin Optical Time Domain Analysis (SA-BOTDA) technique, the whole length of the strip was interrogated every 10ms (strip sampling rate of 100Hz) with a spatial resolution of the order of 1m. A dynamic spatially and temporally continuous map of the strain was obtained, whose temporal behavior at four discrete locations was verified against co-located fiber Bragg gratings. With a trade-off among sampling rate, range and signal to noise ratio, kHz sampling rates and hundreds of meters of range can be obtained with resolution down to a few centimeters.

© 2013 OSA

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(190.0190) Nonlinear optics : Nonlinear optics
(290.5830) Scattering : Scattering, Brillouin
(330.1880) Vision, color, and visual optics : Detection

ToC Category:
Sensors

History
Original Manuscript: January 31, 2013
Revised Manuscript: March 13, 2013
Manuscript Accepted: March 17, 2013
Published: April 24, 2013

Citation
Yair Peled, Avi Motil, Iddo Kressel, and Moshe Tur, "Monitoring the propagation of mechanical waves using an optical fiber distributed and dynamic strain sensor based on BOTDA," Opt. Express 21, 10697-10705 (2013)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-9-10697


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References

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