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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • 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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