Abstract

A recently proposed method of measuring the two Brillouin frequencies in a multicompositional fiber core for unambiguously resolving temperature and strain in a distributed sensor is compared with the previously established technique of measuring the intensity and frequency of the single Brillouin peak in a standard single-mode fiber.

© 2004 Optical Society of America

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References

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  1. T. Kurashima, T. Horiguchi, and M. Teteda, IEEE Photon. Technol. Lett. 2, 718 (1990).
    [CrossRef]
  2. P. C. Wait and A. H. Hartog, IEEE Photon. Technol. Lett. 13, 508 (2001).
    [CrossRef]
  3. S. M. Maughan, H. H. Kee, and T. P. Newson, Meas. Sci. Technol. 12, 834 (2001).
    [CrossRef]
  4. C. C. Lee, P. W. Chiang, and S. Shi, IEEE Photon. Technol. Lett. 13, 1094 (2001).
    [CrossRef]
  5. J. D. C. Jones, in Optical Fiber Sensors, Vol. 16 of 1997 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 1997), p. 36.

2001 (3)

P. C. Wait and A. H. Hartog, IEEE Photon. Technol. Lett. 13, 508 (2001).
[CrossRef]

S. M. Maughan, H. H. Kee, and T. P. Newson, Meas. Sci. Technol. 12, 834 (2001).
[CrossRef]

C. C. Lee, P. W. Chiang, and S. Shi, IEEE Photon. Technol. Lett. 13, 1094 (2001).
[CrossRef]

1990 (1)

T. Kurashima, T. Horiguchi, and M. Teteda, IEEE Photon. Technol. Lett. 2, 718 (1990).
[CrossRef]

Chiang, P. W.

C. C. Lee, P. W. Chiang, and S. Shi, IEEE Photon. Technol. Lett. 13, 1094 (2001).
[CrossRef]

Hartog, A. H.

P. C. Wait and A. H. Hartog, IEEE Photon. Technol. Lett. 13, 508 (2001).
[CrossRef]

Horiguchi, T.

T. Kurashima, T. Horiguchi, and M. Teteda, IEEE Photon. Technol. Lett. 2, 718 (1990).
[CrossRef]

Jones, J. D. C.

J. D. C. Jones, in Optical Fiber Sensors, Vol. 16 of 1997 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 1997), p. 36.

Kee, H. H.

S. M. Maughan, H. H. Kee, and T. P. Newson, Meas. Sci. Technol. 12, 834 (2001).
[CrossRef]

Kurashima, T.

T. Kurashima, T. Horiguchi, and M. Teteda, IEEE Photon. Technol. Lett. 2, 718 (1990).
[CrossRef]

Lee, C. C.

C. C. Lee, P. W. Chiang, and S. Shi, IEEE Photon. Technol. Lett. 13, 1094 (2001).
[CrossRef]

Maughan, S. M.

S. M. Maughan, H. H. Kee, and T. P. Newson, Meas. Sci. Technol. 12, 834 (2001).
[CrossRef]

Newson, T. P.

S. M. Maughan, H. H. Kee, and T. P. Newson, Meas. Sci. Technol. 12, 834 (2001).
[CrossRef]

Shi, S.

C. C. Lee, P. W. Chiang, and S. Shi, IEEE Photon. Technol. Lett. 13, 1094 (2001).
[CrossRef]

Teteda, M.

T. Kurashima, T. Horiguchi, and M. Teteda, IEEE Photon. Technol. Lett. 2, 718 (1990).
[CrossRef]

Wait, P. C.

P. C. Wait and A. H. Hartog, IEEE Photon. Technol. Lett. 13, 508 (2001).
[CrossRef]

IEEE Photon. Technol. Lett. (3)

T. Kurashima, T. Horiguchi, and M. Teteda, IEEE Photon. Technol. Lett. 2, 718 (1990).
[CrossRef]

P. C. Wait and A. H. Hartog, IEEE Photon. Technol. Lett. 13, 508 (2001).
[CrossRef]

C. C. Lee, P. W. Chiang, and S. Shi, IEEE Photon. Technol. Lett. 13, 1094 (2001).
[CrossRef]

Meas. Sci. Technol. (1)

S. M. Maughan, H. H. Kee, and T. P. Newson, Meas. Sci. Technol. 12, 834 (2001).
[CrossRef]

Other (1)

J. D. C. Jones, in Optical Fiber Sensors, Vol. 16 of 1997 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 1997), p. 36.

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Figures (5)

Fig. 1
Fig. 1

Schematic diagram of the experimental setup. EDFA, erbium-doped fiber amplifier; AOM, acousto-optic modulator; FBG, fiber Bragg grating; PS, polarization scrambler; LO, local oscillator; C, circulator.

Fig. 2
Fig. 2

Brillouin spectrum in SMF and LEAF.

Fig. 3
Fig. 3

LEAF Brillouin frequency shifts at the heated section in the LEAF.

Fig. 4
Fig. 4

Brillouin frequency shifts at the heated and strained sections of the LEAF.

Fig. 5
Fig. 5

Brillouin frequency (top) and power change (bottom) at the heated and strained sections in the SMF.

Tables (1)

Tables Icon

Table 1 LEAF and SMF Strain and Temperature Coefficients

Equations (7)

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ΔνPi=CνTPiΔT+CνPiΔ,
ΔT=ΔνP1-ΔνP2CνTP1-CνTP2,
Δ=ΔνP2CνTP1-ΔνP1CνTP2CνTP1CνP1-CνTP2CνP1.
δT=CνP2δνP1+CνP1δνP2CνTP2CνP1-CνP2CνTP1,
δ=CνTP2δνP1+CνTP1δνP2CνTP2CνP1-CνP2CνTP1.
δT=CPδν+CνδPCνCPT-CPCνT,
δ=CPTδν+CνTδPCνCPT-CPCνT.

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