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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 22, Iss. 6 — Jun. 1, 2005
  • pp: 1321–1324

150-km-range distributed temperature sensor based on coherent detection of spontaneous Brillouin backscatter and in-line Raman amplification

Mohamed N. Alahbabi, Yuh T. Cho, and Trevor P. Newson  »View Author Affiliations


JOSA B, Vol. 22, Issue 6, pp. 1321-1324 (2005)
http://dx.doi.org/10.1364/JOSAB.22.001321


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Abstract

We report an extended-range distributed temperature sensor based on coherent detection of the frequency shift of the spontaneous Brillouin backscatter combined with Raman amplification. We achieved the Raman amplification within the sensing fiber using either a copropagating or counterpropagating Raman pump with respect to the probe pulse, and experiments were conducted to investigate the optimum pump and probe power combination. With a copropagating Raman pump a temperature resolution of 0.8°C was achieved at a sensing range of 100 km, and with a counterpropagating Raman pump a temperature resolution of 5.2°C was achieved at a sensing range of 150 km with 50-m spatial resolution.

© 2005 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(120.6780) Instrumentation, measurement, and metrology : Temperature
(190.5650) Nonlinear optics : Raman effect
(290.1350) Scattering : Backscattering
(290.5830) Scattering : Scattering, Brillouin
(290.5860) Scattering : Scattering, Raman

Citation
Mohamed N. Alahbabi, Yuh T. Cho, and Trevor P. Newson, "150-km-range distributed temperature sensor based on coherent detection of spontaneous Brillouin backscatter and in-line Raman amplification," J. Opt. Soc. Am. B 22, 1321-1324 (2005)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-22-6-1321


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References

  1. T. Horiguchi, K. Shimizu, T. Kurashima, M. Tateda, and Y. Koyamada, "Development of a distributed sensing technique using Brillouin scattering," J. Lightwave Technol. 13, 1296-1302 (1995). [CrossRef]
  2. K. Shimizu, T. Horiguchi, Y. Koyamada, and T. Kurashima, "Coherent self-heterodyne detection of spontaneously Brillouin-scatted light waves in a single-mode fiber," Opt. Lett. 18, 185-187 (1993). [CrossRef]
  3. M. N. Alahbabi, Y. T. Cho, and T. P. Newson, "100 km distributed temperature sensor based on coherent detection of spontaneous Brillouin backscatter," Meas. Sci. Technol. 15, 1544-1547 (2004). [CrossRef]
  4. Y. T. Cho and T. P. Newson, "Brillouin-based distributed fibre temperature sensor at 1.53µm using Raman amplification," in 15th Optical Fiber Sensors Conference Technical Digest, E.Udd and R.O.Claus, eds. (IEEE Press, Piscataway, N.J., 2002), pp. 305-308.
  5. M. N. Alahbabi, N. P. Lawrence, Y. T. Cho, and T. P. Newson, "High spatial resolution microwave detection system for long range Brillouin-based distributed sensors," Meas. Sci. Technol. 15, 1539-1543 (2004). [CrossRef]
  6. M. N. Alahbabi, P. C. Wait, Y. T. Cho, A. H. Hartog, and T. P. Newson, "Influence of modulation instability on distributed optical fiber sensors based on spontaneous Brillouin scattering," J. Opt. Soc. Am. B 21, 1156-1160 (2004). [CrossRef]

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