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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 12, Iss. 12 — Jun. 14, 2004
  • pp: 2656–2661

Signal to noise and range enhancement of a Brillouin intensity based temperature sensor

K. De Souza and T. P. Newson  »View Author Affiliations


Optics Express, Vol. 12, Issue 12, pp. 2656-2661 (2004)
http://dx.doi.org/10.1364/OPEX.12.002656


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Abstract

We report on the theory and use of pre-amplification to enhance the measurement range of a spontaneous Brillouin intensity based distributed fiber-optic sensor. One factor that limits temperature resolution is receiver sensitivity, which degrades for long range sensors. Using optical preamplification before photodetection in a 23km sensor improved the signal-to-noise by approximately 17dB using a 20MHz detector. The major source of noise was amplified spontaneous emission beat noise.

© 2004 Optical Society of America

OCIS Codes
(060.2320) Fiber optics and optical communications : Fiber optics amplifiers and oscillators
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(290.5830) Scattering : Scattering, Brillouin
(290.5870) Scattering : Scattering, Rayleigh

ToC Category:
Research Papers

History
Original Manuscript: April 30, 2004
Revised Manuscript: May 31, 2004
Published: June 14, 2004

Citation
K. De Souza and T. Newson, "Signal to noise and range enhancement of the Brillouin intensity based temperature sensor," Opt. Express 12, 2656-2661 (2004)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-12-12-2656


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References

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