Simultaneous Distributed Strain and Temperature Measurement
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
[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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