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Optics Letters

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  • Vol. 30, Iss. 10 — May. 15, 2005
  • pp: 1099–1101

Subpeaks in the Brillouin loss spectra of distributed fiber-optic sensors

Yidun Wan, Shahraam Afshar V., Lufan Zou, Liang Chen, and Xiaoyi Bao  »View Author Affiliations


Optics Letters, Vol. 30, Issue 10, pp. 1099-1101 (2005)
http://dx.doi.org/10.1364/OL.30.001099


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Abstract

Subpeaks in the Brillouin loss spectra of distributed fiber-optic sensors were observed for what is believed to be the first time and studied. We discovered that the Fourier spectrum of the pulsed signal and the off-resonance oscillation both contributed to subpeaks. The off-resonance oscillation at frequency |nu - nu_B| is the oscillation in the Brillouin time domain when beat frequency nu of the two counterpropagating laser beams does not match local Brillouin frequency nu_B. This study is important in differentiating the subpeaks from actual strain-temperature peaks.

© 2005 Optical Society of America

OCIS Codes
(060.2310) Fiber optics and optical communications : Fiber optics
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(190.5890) Nonlinear optics : Scattering, stimulated
(290.5830) Scattering : Scattering, Brillouin
(290.5900) Scattering : Scattering, stimulated Brillouin

Citation
Yidun Wan, Shahraam Afshar V., Lufan Zou, Liang Chen, and Xiaoyi Bao, "Subpeaks in the Brillouin loss spectra of distributed fiber-optic sensors," Opt. Lett. 30, 1099-1101 (2005)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-30-10-1099


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References

  1. X. Bao, J. Dhliwayo, N. Heron, D. J. Webb, and D. A. Jackson, J. Low Temp. Phys. 13, 1340 (1995).
  2. X. Bao, D. J. Webb, and D. A. Jackson, Electron. Lett. 29, 976 (1993).
  3. S. Afshar V., G. A. Ferrier, X. Bao, and L. Chen, Opt. Lett. 28, 1418 (2003).
  4. A. W. Brown, "Development of a Brillouin scattering based distributed fibre optic strain sensor," Ph.D. dissertation (Department of Physics, University of New Brunswick, Fredericton, New Brunswick, Canada, 2000).
  5. R. Chu, M. Kanefsky, and J. Falk, J. Appl. Phys. 71, 4653 (1992). [CrossRef]

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