Abstract

We report what are believed to be the first measurements of the phase sensitivity of a fiber sensor array using multiple low-gain remotely pumped amplifiers with an interferometric sensor inserted. The measured phase sensitivities for individual rungs average 5.7 µradrms/Hz and exhibit no dependence on rung number, in agreement with predictions.

© 1998 Optical Society of America

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References

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  1. A. D. Kersey, Opt. Fiber Technol. Mater. Devices Syst. 2, 291 (1996).
    [CrossRef]
  2. C. W. Hodgson, J. L. Wagener, M. J. F. Digonnet, and H. J. Shaw, J. Lightwave Technol. 16, 218 (1998).
    [CrossRef]
  3. C. W. Hodgson, J. L. Wagener, M. J. F. Digonnet, and H. J. Shaw, J. Lightwave Technol. 16, 224 (1998).
    [CrossRef]
  4. C. W. Hodgson, M. J. F. Digonnet, and H. J. Shaw, Opt. Lett. 22, 1651 (1997).
    [CrossRef]
  5. J. L. Brooks, B. Moslehi, B. Y. Kim, and H. J. Shaw, J. Lightwave Technol. 5, 1014 (1987).
    [CrossRef]
  6. J. L. Wagener, C. W. Hodgson, M. J. F. Digonnet, and H. J. Shaw, J. Lightwave Technol. 15, 1681 (1997).
    [CrossRef]
  7. J. Sæther and K. Bløtekjær, Opt. Rev. 5, 138 (1997).
    [CrossRef]

1998 (2)

1997 (3)

J. L. Wagener, C. W. Hodgson, M. J. F. Digonnet, and H. J. Shaw, J. Lightwave Technol. 15, 1681 (1997).
[CrossRef]

J. Sæther and K. Bløtekjær, Opt. Rev. 5, 138 (1997).
[CrossRef]

C. W. Hodgson, M. J. F. Digonnet, and H. J. Shaw, Opt. Lett. 22, 1651 (1997).
[CrossRef]

1996 (1)

A. D. Kersey, Opt. Fiber Technol. Mater. Devices Syst. 2, 291 (1996).
[CrossRef]

1987 (1)

J. L. Brooks, B. Moslehi, B. Y. Kim, and H. J. Shaw, J. Lightwave Technol. 5, 1014 (1987).
[CrossRef]

Bløtekjær, K.

J. Sæther and K. Bløtekjær, Opt. Rev. 5, 138 (1997).
[CrossRef]

Brooks, J. L.

J. L. Brooks, B. Moslehi, B. Y. Kim, and H. J. Shaw, J. Lightwave Technol. 5, 1014 (1987).
[CrossRef]

Digonnet, M. J. F.

Hodgson, C. W.

Kersey, A. D.

A. D. Kersey, Opt. Fiber Technol. Mater. Devices Syst. 2, 291 (1996).
[CrossRef]

Kim, B. Y.

J. L. Brooks, B. Moslehi, B. Y. Kim, and H. J. Shaw, J. Lightwave Technol. 5, 1014 (1987).
[CrossRef]

Moslehi, B.

J. L. Brooks, B. Moslehi, B. Y. Kim, and H. J. Shaw, J. Lightwave Technol. 5, 1014 (1987).
[CrossRef]

Sæther, J.

J. Sæther and K. Bløtekjær, Opt. Rev. 5, 138 (1997).
[CrossRef]

Shaw, H. J.

Wagener, J. L.

J. Lightwave Technol. (4)

J. L. Brooks, B. Moslehi, B. Y. Kim, and H. J. Shaw, J. Lightwave Technol. 5, 1014 (1987).
[CrossRef]

J. L. Wagener, C. W. Hodgson, M. J. F. Digonnet, and H. J. Shaw, J. Lightwave Technol. 15, 1681 (1997).
[CrossRef]

C. W. Hodgson, J. L. Wagener, M. J. F. Digonnet, and H. J. Shaw, J. Lightwave Technol. 16, 218 (1998).
[CrossRef]

C. W. Hodgson, J. L. Wagener, M. J. F. Digonnet, and H. J. Shaw, J. Lightwave Technol. 16, 224 (1998).
[CrossRef]

Opt. Fiber Technol. Mater. Devices Syst. (1)

A. D. Kersey, Opt. Fiber Technol. Mater. Devices Syst. 2, 291 (1996).
[CrossRef]

Opt. Lett. (1)

Opt. Rev. (1)

J. Sæther and K. Bløtekjær, Opt. Rev. 5, 138 (1997).
[CrossRef]

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Figures (4)

Fig. 1
Fig. 1

Basic array topology and experimental setup. The array contains 10 rungs and 20 Er/Yb-doped fiber amplifiers. The couplers are wavelength-division multiplexed, coupling approximately 65% of the signal and 0% of the pump into each rung. Each amplifier has approximately 5 dB of gain. ECLD, external-cavity laser diode.

Fig. 2
Fig. 2

Mach–Zehnder interferometric sensor that is inserted into individual rungs. The interferometer is isolated inside a vacuum chamber for thermal stability. One arm is wrapped around a piezoelectric transducer (PZT), allowing the sensor to be biased with a dc voltage and modulated with an ac voltage.

Fig. 3
Fig. 3

Measured spectrum of the array output with the sensor inserted into rung 5. The pulse corresponding to this rung is measured with a spectrum analyzer. The peak corresponds to the ac modulation of the Mach–Zehnder sensor. The noise floor is caused by signal–amplified spontaneous emission beat noise.

Fig. 4
Fig. 4

Measured phase sensitivities of rungs 3–10. Circles, measured phase sensitivities; squares, average for each rung; error bars, overall standard deviation averaged over all rungs.

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