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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 22 — Nov. 4, 2013
  • pp: 27111–27118

Sensitivity enhanced strain and temperature measurements based on FBG and frequency chirp magnification

Jiangbing Du and Zuyuan He  »View Author Affiliations

Optics Express, Vol. 21, Issue 22, pp. 27111-27118 (2013)

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In this work, highly sensitive measurements of strain and temperature have been demonstrated using a fiber Bragg grating (FBG) sensor with significantly enhance sensitivity by all-optical signal processing. The sensitivity enhancement is achieved by degenerated Four Wave Mixing (FWM) for frequency chirp magnification (FCM), which can be used for magnifying the wavelength drift of the FBG sensor induced by strain and temperature change. Highly sensitive measurements of static strain and temperature have been experimentally demonstrated with strain sensitivity of 5.36 pm/με and temperature sensitivity of 54.09 pm/°C. The sensitivity has been enhanced by a factor of five based on a 4-order FWM in a highly nonlinear fiber (HNLF).

© 2013 OSA

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(190.4380) Nonlinear optics : Nonlinear optics, four-wave mixing

ToC Category:

Original Manuscript: June 24, 2013
Revised Manuscript: August 16, 2013
Manuscript Accepted: September 4, 2013
Published: November 1, 2013

Jiangbing Du and Zuyuan He, "Sensitivity enhanced strain and temperature measurements based on FBG and frequency chirp magnification," Opt. Express 21, 27111-27118 (2013)

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