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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 36, Iss. 3 — Feb. 1, 2011
  • pp: 427–429

Stimulated Brillouin scattering slow-light-based fiber-optic temperature sensor

Liang Wang, Bin Zhou, Chester Shu, and Sailing He  »View Author Affiliations

Optics Letters, Vol. 36, Issue 3, pp. 427-429 (2011)

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We propose and experimentally demonstrate a method for temperature sensing using stimulated Brillouin scattering (SBS)-based slow light. The approach relies on temperature dependence of the Brillouin frequency shift in a fiber, hence the time delay of an input probe pulse. By measuring the delay, temperature sensing can be realized. We achieve temperature measurement in a 100 m single-mode fiber (SMF) using a cw pump. The main temperature-sensing range is 18 ° C from the room temperature, limited by the SBS gain bandwidth. To apply the technique for measurement of a shorter fiber segment, a pulsed pump is used to introduce SBS slow light. Temperature sensing is achieved in a 2 m SMF with a main sensing range of around 25 ° C . The scheme is easily implemented, exhibits a relatively high temperature sensitivity with a resolution better than 1.0 ° C , and is potentially applicable for distributed sensing.

© 2011 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(060.4370) Fiber optics and optical communications : Nonlinear optics, fibers
(290.5900) Scattering : Scattering, stimulated Brillouin

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: November 9, 2010
Manuscript Accepted: December 14, 2010
Published: February 1, 2011

Liang Wang, Bin Zhou, Chester Shu, and Sailing He, "Stimulated Brillouin scattering slow-light-based fiber-optic temperature sensor," Opt. Lett. 36, 427-429 (2011)

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