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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 51, Iss. 32 — Nov. 10, 2012
  • pp: 7864–7868

Dependence of Brillouin frequency shift on radial and axial strain in silica optical fibers

Haidong Gu, Huijuan Dong, Guangyu Zhang, Yongkang Dong, and Jun He  »View Author Affiliations

Applied Optics, Vol. 51, Issue 32, pp. 7864-7868 (2012)

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Brillouin frequency shift (BFS) in a single-mode optical fiber has been measured as a function of both radial and axial strain via the Brillouin optical time domain analysis technique. The effects of the two kinds of strain on the BFS are decoupled by making fiber pretensioned and relaxed while applying pressure. Linear relations have been found between the BFS and both kinds of strain. The radial strain coefficient Cvε(r) is found to be 0.029MHz/με, and the axial strain coefficient Cvε(a) is 0.053MHz/με. The result may give impetus to some potential applications of the optical fibers, such as a distributed pressure sensor based on Brillouin scattering.

© 2012 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(060.2400) Fiber optics and optical communications : Fiber properties
(060.4370) Fiber optics and optical communications : Nonlinear optics, fibers
(120.5820) Instrumentation, measurement, and metrology : Scattering measurements

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: August 7, 2012
Revised Manuscript: October 18, 2012
Manuscript Accepted: October 19, 2012
Published: November 9, 2012

Haidong Gu, Huijuan Dong, Guangyu Zhang, Yongkang Dong, and Jun He, "Dependence of Brillouin frequency shift on radial and axial strain in silica optical fibers," Appl. Opt. 51, 7864-7868 (2012)

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