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Optics Letters

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  • Vol. 25, Iss. 3 — Feb. 1, 2000
  • pp: 156–158

Transient response in high-resolution Brillouin-based distributed sensing using probe pulses shorter than the acoustic relaxation time

V. Lecoeuche, D. J. Webb, C. N. Pannell, and D. A. Jackson  »View Author Affiliations


Optics Letters, Vol. 25, Issue 3, pp. 156-158 (2000)
http://dx.doi.org/10.1364/OL.25.000156


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Abstract

We perform numerical simulations on a model describing a Brillouin-based temperature and strain sensor, testing its response when it is probed with relatively short pulses. Experimental results were recently published [e.g., Opt. Lett. 24, 510 (1999)] that showed a broadening of the Brillouin loss curve when the probe pulse duration is reduced, followed by a sudden and rather surprising reduction of the linewidth when the pulse duration gets shorter than the acoustic relaxation time. Our study reveals the processes responsible for this behavior. We give a clear physical insight into the problem, allowing us to define the best experimental conditions required for one to take the advantage of this effect.

© 2000 Optical Society of America

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

Citation
V. Lecoeuche, D. J. Webb, C. N. Pannell, and D. A. Jackson, "Transient response in high-resolution Brillouin-based distributed sensing using probe pulses shorter than the acoustic relaxation time," Opt. Lett. 25, 156-158 (2000)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-25-3-156


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References

  1. A. Fellay, L. Thevenaz, M. Facchini, M. Nikles, and P. Robert, in Optical Fiber Sensors, Vol. 16 of 1997 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 1997), p. 324.
  2. T. Horiguchi, K. Shimizu, T. Kurashima, and Y. Koyamada, Proc. SPIE 2507, 126 (1995).
  3. X. Bao, A. Brown, M. DeMerchant, and J. Smith, Opt. Lett. 24, 510 (1999).
  4. C. C. Chow and A. Bers, Phys. Rev. A 47, 5144 (1993).
  5. V. Lecoeuche, S. Randoux, B. Segard, and J. Zemmouri, Phys. Rev. A 53, 2822 (1996).
  6. M. Nikles, L. Thevenaz, and P. Robert, Opt. Lett. 21, 758 (1996).

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