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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 4 — Feb. 15, 2014
  • pp: 857–860

High-sensitivity temperature sensing using higher-order Stokes stimulated Brillouin scattering in optical fiber

Victor Lambin Iezzi, Sébastien Loranger, Mikaël Marois, and Raman Kashyap  »View Author Affiliations


Optics Letters, Vol. 39, Issue 4, pp. 857-860 (2014)
http://dx.doi.org/10.1364/OL.39.000857


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Abstract

In an effort to reduce the cost of sensing systems and make them more compact and flexible, Brillouin scattering has been demonstrated as a useful tool, especially for distributed temperature and strain sensing (DTSS), with a resolution of a few centimeters over several tens of kilometers of fiber. However, sensing is limited by the Brillouin frequency shift’s sensitivity to these parameters, which are of the order of 1.3MHz/°C and of 0.05MHz/με for standard fiber. In this Letter, we demonstrate a new and simple technique for enhancing the sensitivity of sensing by using higher-orders Stokes shifts with stimulated Brillouin scattering (SBS). By this method, we multiply the sensitivity of the sensor by the number of the Stokes order used, enhanced by six-fold, therefore reaching a sensitivity of 7MHz/°C, and potentially 0.30MHz/με. To do this, we place the test fiber within a cavity to produce a frequency comb. Based on a reference multiorder SBS source for heterodyning, this system should provide a new distributed sensing technology with significantly better resolution at a potentially lower cost than currently available DTSS systems.

© 2014 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(290.5900) Scattering : Scattering, stimulated Brillouin
(280.4788) Remote sensing and sensors : Optical sensing and sensors
(280.5475) Remote sensing and sensors : Pressure measurement
(280.6780) Remote sensing and sensors : Temperature

ToC Category:
Remote Sensing and Sensors

History
Original Manuscript: November 1, 2013
Revised Manuscript: December 23, 2013
Manuscript Accepted: January 7, 2014
Published: February 6, 2014

Citation
Victor Lambin Iezzi, Sébastien Loranger, Mikaël Marois, and Raman Kashyap, "High-sensitivity temperature sensing using higher-order Stokes stimulated Brillouin scattering in optical fiber," Opt. Lett. 39, 857-860 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-4-857

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