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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 12, Iss. 15 — Jul. 26, 2004
  • pp: 3515–3520

Raman amplifier-based long-distance remote, strain and temperature sensing system using an erbium-doped fiber and a fiber Bragg grating

Ju Han Lee, You Min Chang, Young-Geun Han, Haeyang Chung, Sang Hyuck Kim, and Sang Bae Lee  »View Author Affiliations


Optics Express, Vol. 12, Issue 15, pp. 3515-3520 (2004)
http://dx.doi.org/10.1364/OPEX.12.003515


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Abstract

We demonstrate a novel, Raman amplifier-based long-distance sensing system for simultaneous measurement of temperature and strain using a combined sensing probe of an erbium-doped fiber (EDF) and a fiber Bragg grating. By recycling residual Raman pump power for generation of amplified spontaneous emission in the EDF after distributed Raman amplification in the transmission fiber, the overall system configuration was significantly simplified without requiring any additional broadband light source. We obtain a remote sensing operation of simultaneous temperature and strain measurement at a location of 50 km. High quality of sensing signals with a ~11 dB signal-to-noise ratio (SNR) is readily achieved even after the 50 km transmission with distributed Raman amplification.

© 2004 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(060.2410) Fiber optics and optical communications : Fibers, erbium
(190.5650) Nonlinear optics : Raman effect
(230.1480) Optical devices : Bragg reflectors

ToC Category:
Research Papers

History
Original Manuscript: May 27, 2004
Revised Manuscript: July 5, 2004
Published: July 26, 2004

Citation
Ju Han Lee, You Chang, Young-Geun Han, Haeyang Chung, Sang Kim, and Sang Lee, "Raman amplifier-based long-distance remote, strain and temperature sensing system using an erbium-doped fiber and a fiber Bragg grating," Opt. Express 12, 3515-3520 (2004)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-12-15-3515


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References

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