Abstract

A novel in-fiber modal interferometer is presented that is based on a nonadiabatic biconical fused taper that couples light between the cladding and the core, combined with the Fresnel reflection at the fiber end. It is observed that the returned light from this fiber structure shows a channeled spectrum similar to that of a two-wave Michelson interferometer. The application of this device as a fiber optic flowmeter sensor is demonstrated.

© 2007 Optical Society of America

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References

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  1. J.M.López-Higuera, ed., Handbook of Optical Fiber Sensing Technology (Wiley, 2002).
  2. T. A. Eftimov and W. J. Brock, J. Lightwave Technol. 11, 2150 (1993).
    [CrossRef]
  3. Y. Liu, J. A. R. Williams, L. Zhang, and I. Bennion, Opt. Commun. 164, 27 (1999).
    [CrossRef]
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    [CrossRef]
  5. O. Frazão, R. Falate, J. L. Fabris, J. L. Santos, L. A. Ferreira, F. M. Araújo, Opt. Lett. 31, 2960 (2006).
    [CrossRef] [PubMed]
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    [CrossRef] [PubMed]
  7. J. L. Brooks, R. H. Wentworth, R. C. Youngquist, M. Tur, B. Y. Kim, and H. J. Shaw, J. Lightwave Technol. 5, 1062 (1985).
    [CrossRef]
  8. D. Jackson, A. Kersey, M. Corke, and J. Jones, Electron. Lett. 18, 302 (1982).
    [CrossRef]

2006 (2)

2004 (1)

P. L. Swart, Meas. Sci. Technol. 15, 1576 (2004).
[CrossRef]

1999 (1)

Y. Liu, J. A. R. Williams, L. Zhang, and I. Bennion, Opt. Commun. 164, 27 (1999).
[CrossRef]

1993 (1)

T. A. Eftimov and W. J. Brock, J. Lightwave Technol. 11, 2150 (1993).
[CrossRef]

1985 (1)

J. L. Brooks, R. H. Wentworth, R. C. Youngquist, M. Tur, B. Y. Kim, and H. J. Shaw, J. Lightwave Technol. 5, 1062 (1985).
[CrossRef]

1982 (1)

D. Jackson, A. Kersey, M. Corke, and J. Jones, Electron. Lett. 18, 302 (1982).
[CrossRef]

Araújo, F. M.

Bennion, I.

Y. Liu, J. A. R. Williams, L. Zhang, and I. Bennion, Opt. Commun. 164, 27 (1999).
[CrossRef]

Brock, W. J.

T. A. Eftimov and W. J. Brock, J. Lightwave Technol. 11, 2150 (1993).
[CrossRef]

Brooks, J. L.

J. L. Brooks, R. H. Wentworth, R. C. Youngquist, M. Tur, B. Y. Kim, and H. J. Shaw, J. Lightwave Technol. 5, 1062 (1985).
[CrossRef]

Corke, M.

D. Jackson, A. Kersey, M. Corke, and J. Jones, Electron. Lett. 18, 302 (1982).
[CrossRef]

Eftimov, T. A.

T. A. Eftimov and W. J. Brock, J. Lightwave Technol. 11, 2150 (1993).
[CrossRef]

Fabris, J. L.

Falate, R.

Ferreira, L. A.

Frazão, O.

Jackson, D.

D. Jackson, A. Kersey, M. Corke, and J. Jones, Electron. Lett. 18, 302 (1982).
[CrossRef]

Jones, J.

D. Jackson, A. Kersey, M. Corke, and J. Jones, Electron. Lett. 18, 302 (1982).
[CrossRef]

Kersey, A.

D. Jackson, A. Kersey, M. Corke, and J. Jones, Electron. Lett. 18, 302 (1982).
[CrossRef]

Kim, B. Y.

J. L. Brooks, R. H. Wentworth, R. C. Youngquist, M. Tur, B. Y. Kim, and H. J. Shaw, J. Lightwave Technol. 5, 1062 (1985).
[CrossRef]

Liu, Y.

Y. Liu, J. A. R. Williams, L. Zhang, and I. Bennion, Opt. Commun. 164, 27 (1999).
[CrossRef]

Liu, Z.

Santos, J. L.

Shaw, H. J.

J. L. Brooks, R. H. Wentworth, R. C. Youngquist, M. Tur, B. Y. Kim, and H. J. Shaw, J. Lightwave Technol. 5, 1062 (1985).
[CrossRef]

Sun, J.

Swart, P. L.

P. L. Swart, Meas. Sci. Technol. 15, 1576 (2004).
[CrossRef]

Tur, M.

J. L. Brooks, R. H. Wentworth, R. C. Youngquist, M. Tur, B. Y. Kim, and H. J. Shaw, J. Lightwave Technol. 5, 1062 (1985).
[CrossRef]

Wentworth, R. H.

J. L. Brooks, R. H. Wentworth, R. C. Youngquist, M. Tur, B. Y. Kim, and H. J. Shaw, J. Lightwave Technol. 5, 1062 (1985).
[CrossRef]

Williams, J. A. R.

Y. Liu, J. A. R. Williams, L. Zhang, and I. Bennion, Opt. Commun. 164, 27 (1999).
[CrossRef]

Yang, J.

Youngquist, R. C.

J. L. Brooks, R. H. Wentworth, R. C. Youngquist, M. Tur, B. Y. Kim, and H. J. Shaw, J. Lightwave Technol. 5, 1062 (1985).
[CrossRef]

Yuan, L.

Zhang, L.

Y. Liu, J. A. R. Williams, L. Zhang, and I. Bennion, Opt. Commun. 164, 27 (1999).
[CrossRef]

Electron. Lett. (1)

D. Jackson, A. Kersey, M. Corke, and J. Jones, Electron. Lett. 18, 302 (1982).
[CrossRef]

J. Lightwave Technol. (2)

J. L. Brooks, R. H. Wentworth, R. C. Youngquist, M. Tur, B. Y. Kim, and H. J. Shaw, J. Lightwave Technol. 5, 1062 (1985).
[CrossRef]

T. A. Eftimov and W. J. Brock, J. Lightwave Technol. 11, 2150 (1993).
[CrossRef]

Meas. Sci. Technol. (1)

P. L. Swart, Meas. Sci. Technol. 15, 1576 (2004).
[CrossRef]

Opt. Commun. (1)

Y. Liu, J. A. R. Williams, L. Zhang, and I. Bennion, Opt. Commun. 164, 27 (1999).
[CrossRef]

Opt. Lett. (2)

Other (1)

J.M.López-Higuera, ed., Handbook of Optical Fiber Sensing Technology (Wiley, 2002).

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Figures (4)

Fig. 1
Fig. 1

Geometry of the Michelson modal interferometer and the optical flowmeter design, and the sensing system setup (inset, photograph of the fiber taper).

Fig. 2
Fig. 2

Reflected power spectrum from the taper-assisted modal interferometer.

Fig. 3
Fig. 3

Interferometer phase change versus input pressure for the configuration in Fig. 1.

Fig. 4
Fig. 4

Interferometer phase change versus flow velocity (inset, calibration curve relating input pressure to flow velocity).

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