Abstract

The transmission spectrum of fiber Bragg gratings with gratings planes tilted at a small angle (2°–10°) relative to the fiber axis shows a large number of narrowband cladding mode resonances within a 100nm wide spectrum. When a gold coating with a thickness between 10 and 30nm is deposited on the fiber, the transmission spectrum shows anomalous features for values of the outside medium refractive index between 1.4211 and 1.4499. These features are shown to correspond to the excitation of surface plasmon resonances at the external surface of the gold film.

© 2007 Optical Society of America

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References

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    [CrossRef]

2006 (3)

2003 (1)

J. Homola, Anal. Bioanal. Chem. 377, 528 (2003).
[CrossRef] [PubMed]

2001 (1)

G. Laffont and P. Ferdinand, Meas. Sci. Technol. 12, 765 (2001).
[CrossRef]

1996 (1)

A. Diez, M. V. Andres, D. O. Culverhouse, and T. A. Birks, Electron. Lett. 32, 1390 (1996).
[CrossRef]

1994 (1)

1993 (1)

R. C. Jorgenson and S. S. Yee, Sens. Actuators B 12, 213 (1993).
[CrossRef]

Albert, J.

C. Chen and J. Albert, Electron. Lett. 42, 21 (2006).
[CrossRef]

Alonso, R.

Andres, M. V.

A. Diez, M. V. Andres, D. O. Culverhouse, and T. A. Birks, Electron. Lett. 32, 1390 (1996).
[CrossRef]

Birks, T. A.

A. Diez, M. V. Andres, D. O. Culverhouse, and T. A. Birks, Electron. Lett. 32, 1390 (1996).
[CrossRef]

Chen, C.

C. Chen and J. Albert, Electron. Lett. 42, 21 (2006).
[CrossRef]

Culverhouse, D. O.

A. Diez, M. V. Andres, D. O. Culverhouse, and T. A. Birks, Electron. Lett. 32, 1390 (1996).
[CrossRef]

Diez, A.

A. Diez, M. V. Andres, D. O. Culverhouse, and T. A. Birks, Electron. Lett. 32, 1390 (1996).
[CrossRef]

Ferdinand, P.

G. Laffont and P. Ferdinand, Meas. Sci. Technol. 12, 765 (2001).
[CrossRef]

He, Y.-J.

Homola, J.

J. Homola, Anal. Bioanal. Chem. 377, 528 (2003).
[CrossRef] [PubMed]

Huang, J.-F.

Jorgenson, R. C.

R. C. Jorgenson and S. S. Yee, Sens. Actuators B 12, 213 (1993).
[CrossRef]

Kashyap, R.

Laffont, G.

G. Laffont and P. Ferdinand, Meas. Sci. Technol. 12, 765 (2001).
[CrossRef]

Lo, Y.-L.

Nemova, G.

Pelayo, J.

Raether, H.

H. Raether, Surface Plasmons (Springer-Verlag, 1988).

Subias, J.

Tornos, J.

Villuendas, F.

Yee, S. S.

R. C. Jorgenson and S. S. Yee, Sens. Actuators B 12, 213 (1993).
[CrossRef]

Anal. Bioanal. Chem. (1)

J. Homola, Anal. Bioanal. Chem. 377, 528 (2003).
[CrossRef] [PubMed]

Appl. Opt. (1)

Electron. Lett. (2)

C. Chen and J. Albert, Electron. Lett. 42, 21 (2006).
[CrossRef]

A. Diez, M. V. Andres, D. O. Culverhouse, and T. A. Birks, Electron. Lett. 32, 1390 (1996).
[CrossRef]

J. Opt. Soc. Am. B (1)

Meas. Sci. Technol. (1)

G. Laffont and P. Ferdinand, Meas. Sci. Technol. 12, 765 (2001).
[CrossRef]

Opt. Lett. (1)

Sens. Actuators B (1)

R. C. Jorgenson and S. S. Yee, Sens. Actuators B 12, 213 (1993).
[CrossRef]

Other (1)

H. Raether, Surface Plasmons (Springer-Verlag, 1988).

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Figures (4)

Fig. 1
Fig. 1

Transmission spectrum of a weakly tilted FBG.

Fig. 2
Fig. 2

(a) Excitation of SPR waves with fiber modes through a weakly tilted FBG. (b) Kretschmann configuration for exciting SPR waves.

Fig. 3
Fig. 3

(a). Transmission spectrum of the same grating as in Fig. 1 but with a 20 nm gold coating and immersed in a sucrose solution with n D = 1.4378 . The bracket indicates the peak position of the anomalous resonance. (b) Same as (a) but without the gold film.

Fig. 4
Fig. 4

Dependence of the plasmon resonance peak wavelength ( λ P ) and corresponding cladding mode effective index on the refractive index of the external medium at 589 nm ( n D ) .

Equations (1)

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λ clad i = ( n eff i + n clad i ) Λ ( cos θ ) ,

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