Brillouin dynamic grating time-domain slope-assisted fast and distributed strain sensing

A. Bergman, L. Yaron, T. Langer, M. Tur

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

A new fast and distributed optical time-domain sensing technique, employing the slope of Brillouin dynamic gratings (BDG) in polarization-maintaining (PM) fibers, is proposed and demonstrated. The strain sensitivity of the reflectivity of a pulsed probe, orthogonally polarized to the pumps which generated the BDG, is shown to depend on both pump and probe detuning. An optimum detuning point is then found, which provides maximum strain sensitivity. We report the measurement of 400Hz strain vibrations with a spatial resolution of 4.2cm at a sampling rate of 16kHz.

Original languageEnglish
Title of host publication23rd International Conference on Optical Fibre Sensors
PublisherSPIE
ISBN (Print)9781628411751
DOIs
StatePublished - 2014
Event23rd International Conference on Optical Fibre Sensors - Santander, Spain
Duration: 2 Jun 20146 Jun 2014

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9157
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

Conference23rd International Conference on Optical Fibre Sensors
Country/TerritorySpain
CitySantander
Period2/06/146/06/14

Keywords

  • Brillouin dynamic grating
  • Fiber-optic sensors
  • Nonlinear optics
  • Stimulated Brillouin scattering

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