Abstract

A novel distributed sensing technique based on reflectometry is proposed. The technique uses the interference of the light waves backscattered within the resolution range of a reflectometer to detect the optical path changes in a single-mode fiber. Experimental results are presented, and practical realization of an intrusion detector that employs this technique is briefly discussed.

© 1994 Optical Society of America

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References

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  1. J. P. Dakin, C. A. Wade, M. Henning, Electron. Lett. 20, 53 (1984).
    [CrossRef]
  2. B. Culshaw, J. Dakin, eds., Optical Fiber Sensors: Systems and Applications (Artech, Dedham, Mass., 1989), Vol. 2.
  3. R. Juškaitis, A. M. Mamedov, V. T. Potapov, S. V. Shatalin, Opt. Lett. 17, 1623 (1992).
    [CrossRef]
  4. K. Shimizu, T. Horiguchi, Y. Koyamada, J. Lightwave Technol. 10, 982 (1992).
    [CrossRef]
  5. P. Healey, Electron. Lett. 21, 226 (1985).
    [CrossRef]
  6. S. M. Kozel, V. N. Listvin, S. V. Shatalin, R. Juškaitis, Sov. Tech. Phys. Lett. 13, 172 (1987).

1992

R. Juškaitis, A. M. Mamedov, V. T. Potapov, S. V. Shatalin, Opt. Lett. 17, 1623 (1992).
[CrossRef]

K. Shimizu, T. Horiguchi, Y. Koyamada, J. Lightwave Technol. 10, 982 (1992).
[CrossRef]

1987

S. M. Kozel, V. N. Listvin, S. V. Shatalin, R. Juškaitis, Sov. Tech. Phys. Lett. 13, 172 (1987).

1985

P. Healey, Electron. Lett. 21, 226 (1985).
[CrossRef]

1984

J. P. Dakin, C. A. Wade, M. Henning, Electron. Lett. 20, 53 (1984).
[CrossRef]

Dakin, J. P.

J. P. Dakin, C. A. Wade, M. Henning, Electron. Lett. 20, 53 (1984).
[CrossRef]

Healey, P.

P. Healey, Electron. Lett. 21, 226 (1985).
[CrossRef]

Henning, M.

J. P. Dakin, C. A. Wade, M. Henning, Electron. Lett. 20, 53 (1984).
[CrossRef]

Horiguchi, T.

K. Shimizu, T. Horiguchi, Y. Koyamada, J. Lightwave Technol. 10, 982 (1992).
[CrossRef]

Juškaitis, R.

R. Juškaitis, A. M. Mamedov, V. T. Potapov, S. V. Shatalin, Opt. Lett. 17, 1623 (1992).
[CrossRef]

S. M. Kozel, V. N. Listvin, S. V. Shatalin, R. Juškaitis, Sov. Tech. Phys. Lett. 13, 172 (1987).

Koyamada, Y.

K. Shimizu, T. Horiguchi, Y. Koyamada, J. Lightwave Technol. 10, 982 (1992).
[CrossRef]

Kozel, S. M.

S. M. Kozel, V. N. Listvin, S. V. Shatalin, R. Juškaitis, Sov. Tech. Phys. Lett. 13, 172 (1987).

Listvin, V. N.

S. M. Kozel, V. N. Listvin, S. V. Shatalin, R. Juškaitis, Sov. Tech. Phys. Lett. 13, 172 (1987).

Mamedov, A. M.

Potapov, V. T.

Shatalin, S. V.

R. Juškaitis, A. M. Mamedov, V. T. Potapov, S. V. Shatalin, Opt. Lett. 17, 1623 (1992).
[CrossRef]

S. M. Kozel, V. N. Listvin, S. V. Shatalin, R. Juškaitis, Sov. Tech. Phys. Lett. 13, 172 (1987).

Shimizu, K.

K. Shimizu, T. Horiguchi, Y. Koyamada, J. Lightwave Technol. 10, 982 (1992).
[CrossRef]

Wade, C. A.

J. P. Dakin, C. A. Wade, M. Henning, Electron. Lett. 20, 53 (1984).
[CrossRef]

Electron. Lett.

J. P. Dakin, C. A. Wade, M. Henning, Electron. Lett. 20, 53 (1984).
[CrossRef]

P. Healey, Electron. Lett. 21, 226 (1985).
[CrossRef]

J. Lightwave Technol.

K. Shimizu, T. Horiguchi, Y. Koyamada, J. Lightwave Technol. 10, 982 (1992).
[CrossRef]

Opt. Lett.

Sov. Tech. Phys. Lett.

S. M. Kozel, V. N. Listvin, S. V. Shatalin, R. Juškaitis, Sov. Tech. Phys. Lett. 13, 172 (1987).

Other

B. Culshaw, J. Dakin, eds., Optical Fiber Sensors: Systems and Applications (Artech, Dedham, Mass., 1989), Vol. 2.

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Figures (3)

Fig. 1
Fig. 1

Schematic diagram of the distributed sensor.

Fig. 2
Fig. 2

Interference signal detected when the fiber was stretched by a piezoelectric modulator.

Fig. 3
Fig. 3

Distributed sensing: signal at the perturbation frequency of ϕ = 0.5 rad. Perturbation points are located 10 and 18 m from the fiber input end.

Equations (4)

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I ( t ) = | E 1 | 2 + | E 2 | 2 + 2 | E 1 | | E 2 | cos [ ϕ 0 + 2 ϕ ( t ) ] ,
K ( τ ) = I 2 cos [ 2 ϕ ( t + τ ) 2 ϕ ( t ) ] ,
K ( τ ) = I 2 cos 2 Ω τ .
K ( τ ) = I 2 [ 1 2 ϕ 2 ( 1 cos ω τ ) ] ,

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