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