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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 38, Iss. 25 — Sep. 1, 1999
  • pp: 5372–5377

Simultaneous Distributed Strain and Temperature Measurement

Jeff Smith, Anthony Brown, Michael DeMerchant, and Xiaoyi Bao  »View Author Affiliations


Applied Optics, Vol. 38, Issue 25, pp. 5372-5377 (1999)
http://dx.doi.org/10.1364/AO.38.005372


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Abstract

Brillouin-scattering-based sensors are capable of measuring either the strain or the temperature along the length of an optical fiber in a distributed fashion through measurement of the Brillouin-frequency shift. The cross sensitivity of the frequency shift to these two parameters makes it impossible to differentiate between them by measurement of the frequency shift alone. We report on a new technique that permits the simultaneous measurement of strain and temperature to resolutions of ∓178 με and ∓3.9 °C at a spatial resolution of 3.5 m by incorporation of the Brillouin-loss peak power with the conventional Brillouin-frequency measurement.

© 1999 Optical Society of America

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

Citation
Jeff Smith, Anthony Brown, Michael DeMerchant, and Xiaoyi Bao, "Simultaneous Distributed Strain and Temperature Measurement," Appl. Opt. 38, 5372-5377 (1999)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-38-25-5372

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