Abstract

We present a novel distributed temperature sensor that uses the temperature dependence of the frequency at which the loss is maximized in the interaction between a cw laser and a pulsed laser. With a 32-km sensing length, a temperature resolution of 1°C has been achieved; it is also shown that a spatial resolution of 5 m may be obtained.

© 1993 Optical Society of America

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References

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  1. A. H. Hartog, J. Lightwave Technol. LT-1, 498 (1983).
    [CrossRef]
  2. J. P. Dakin, D. J. Pratt, G. W. Bibby, J. N. Ross, Electron. Lett. 21, 569 (1985).
    [CrossRef]
  3. A. H. Hartog, A. P. Reach, M. P. Gold, Electron. Lett. 21, 1061 (1985).
    [CrossRef]
  4. T. Shiota, F. Wada, Proc. Soc. Photo-Opt. Instrum. Eng. 1586, 13 (1991).
  5. D. Culverhouse, F. Farahi, C. N. Pannell, D. A. Jackson, Electron. Lett. 25, 914 (1989).
  6. T. Kurashima, T. Horiguchi, M. Tateda, Opt. Lett. 15, 1038 (1990).
    [CrossRef] [PubMed]
  7. X. Bao, D. J. Webb, D. A. Jackson, Opt. Lett. 18, 552 (1993).
    [CrossRef] [PubMed]
  8. T. Horiguchi, M. Tateda, J. Lightwave Technol. 7, 1170 (1989).
    [CrossRef]

1993 (1)

1991 (1)

T. Shiota, F. Wada, Proc. Soc. Photo-Opt. Instrum. Eng. 1586, 13 (1991).

1990 (1)

1989 (2)

T. Horiguchi, M. Tateda, J. Lightwave Technol. 7, 1170 (1989).
[CrossRef]

D. Culverhouse, F. Farahi, C. N. Pannell, D. A. Jackson, Electron. Lett. 25, 914 (1989).

1985 (2)

J. P. Dakin, D. J. Pratt, G. W. Bibby, J. N. Ross, Electron. Lett. 21, 569 (1985).
[CrossRef]

A. H. Hartog, A. P. Reach, M. P. Gold, Electron. Lett. 21, 1061 (1985).
[CrossRef]

1983 (1)

A. H. Hartog, J. Lightwave Technol. LT-1, 498 (1983).
[CrossRef]

Bao, X.

Bibby, G. W.

J. P. Dakin, D. J. Pratt, G. W. Bibby, J. N. Ross, Electron. Lett. 21, 569 (1985).
[CrossRef]

Culverhouse, D.

D. Culverhouse, F. Farahi, C. N. Pannell, D. A. Jackson, Electron. Lett. 25, 914 (1989).

Dakin, J. P.

J. P. Dakin, D. J. Pratt, G. W. Bibby, J. N. Ross, Electron. Lett. 21, 569 (1985).
[CrossRef]

Farahi, F.

D. Culverhouse, F. Farahi, C. N. Pannell, D. A. Jackson, Electron. Lett. 25, 914 (1989).

Gold, M. P.

A. H. Hartog, A. P. Reach, M. P. Gold, Electron. Lett. 21, 1061 (1985).
[CrossRef]

Hartog, A. H.

A. H. Hartog, A. P. Reach, M. P. Gold, Electron. Lett. 21, 1061 (1985).
[CrossRef]

A. H. Hartog, J. Lightwave Technol. LT-1, 498 (1983).
[CrossRef]

Horiguchi, T.

T. Kurashima, T. Horiguchi, M. Tateda, Opt. Lett. 15, 1038 (1990).
[CrossRef] [PubMed]

T. Horiguchi, M. Tateda, J. Lightwave Technol. 7, 1170 (1989).
[CrossRef]

Jackson, D. A.

X. Bao, D. J. Webb, D. A. Jackson, Opt. Lett. 18, 552 (1993).
[CrossRef] [PubMed]

D. Culverhouse, F. Farahi, C. N. Pannell, D. A. Jackson, Electron. Lett. 25, 914 (1989).

Kurashima, T.

Pannell, C. N.

D. Culverhouse, F. Farahi, C. N. Pannell, D. A. Jackson, Electron. Lett. 25, 914 (1989).

Pratt, D. J.

J. P. Dakin, D. J. Pratt, G. W. Bibby, J. N. Ross, Electron. Lett. 21, 569 (1985).
[CrossRef]

Reach, A. P.

A. H. Hartog, A. P. Reach, M. P. Gold, Electron. Lett. 21, 1061 (1985).
[CrossRef]

Ross, J. N.

J. P. Dakin, D. J. Pratt, G. W. Bibby, J. N. Ross, Electron. Lett. 21, 569 (1985).
[CrossRef]

Shiota, T.

T. Shiota, F. Wada, Proc. Soc. Photo-Opt. Instrum. Eng. 1586, 13 (1991).

Tateda, M.

T. Kurashima, T. Horiguchi, M. Tateda, Opt. Lett. 15, 1038 (1990).
[CrossRef] [PubMed]

T. Horiguchi, M. Tateda, J. Lightwave Technol. 7, 1170 (1989).
[CrossRef]

Wada, F.

T. Shiota, F. Wada, Proc. Soc. Photo-Opt. Instrum. Eng. 1586, 13 (1991).

Webb, D. J.

Electron. Lett. (3)

J. P. Dakin, D. J. Pratt, G. W. Bibby, J. N. Ross, Electron. Lett. 21, 569 (1985).
[CrossRef]

A. H. Hartog, A. P. Reach, M. P. Gold, Electron. Lett. 21, 1061 (1985).
[CrossRef]

D. Culverhouse, F. Farahi, C. N. Pannell, D. A. Jackson, Electron. Lett. 25, 914 (1989).

J. Lightwave Technol. (2)

A. H. Hartog, J. Lightwave Technol. LT-1, 498 (1983).
[CrossRef]

T. Horiguchi, M. Tateda, J. Lightwave Technol. 7, 1170 (1989).
[CrossRef]

Opt. Lett. (2)

Proc. Soc. Photo-Opt. Instrum. Eng. (1)

T. Shiota, F. Wada, Proc. Soc. Photo-Opt. Instrum. Eng. 1586, 13 (1991).

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Figures (4)

Fig. 1
Fig. 1

Experimental arrangement: AOM, acousto-optic modulator.

Fig. 2
Fig. 2

Oscilloscope traces showing cw beam intensity monitored at D2 for (a) Brillouin loss and for (b) Brillouin gain. Time base, 50 μs/division; cw wave frequency optimized for fiber at ambient temperature (upper traces) and at 46 °C, the temperature of the first oven (lower traces).

Fig. 3
Fig. 3

Expanded view of the oscilloscope traces of cw beam intensity as a function of time for a section of fiber in oven 2 (fiber D) at 46 °C. One sample corresponds to 0.5 m [for (a)–(c)] and to 0.1 m [for (d)]; see text for details.

Fig. 4
Fig. 4

Laser beat frequency that gives maximum Brillouin loss for the fibers in oven 1 (F1, filled circles) and oven 3 (F4, open circles) as a function of oven temperature.

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