Abstract

We theoretically and experimentally investigated the reorganization of cladding modes in high-refractive-index- (HRI-) coated long-period gratings (LPGs), focusing on the influence of refractive-index sensitivity. When azimuthally symmetric nanoscale HRI coatings are deposited along LPG devices, a significant modification of the distribution of cladding modes occurs, depending on the layers’ features (refractive index and thickness) and on the external refractive index. In particular, if these parameters are properly chosen, a transition between cladding modes and overlay modes occurs. Numerical and experimental effects of the mode transition on the sensitivity of the surrounding refractive index are described.

© 2005 Optical Society of America

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References

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    [CrossRef]
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2005 (4)

P. Pilla, A. Iadicicco, L. Contessa, S. Campopiano, A. Cutolo, M. Giordano, and A. Cusano, IEEE Photon. Technol. Lett. 17, 1713 (2005).
[CrossRef]

I. Del Villar, I. R. Matias, F. J. Arregui, and P. Lalanne, Opt. Express 13, 56 (2005).
[CrossRef] [PubMed]

I. Del Villar, M. Achaerandio, I. R. Matias, and F. J. Arregui, Opt. Lett. 30, 720 (2005).
[CrossRef] [PubMed]

M. Giordano, M. Russo, A. Cusano, G. Mensitieri, and G. Guerra, Sens. Actuators B 109, 177 (2005).
[CrossRef]

2004 (1)

M. Giordano, M. Russo, A. Cusano, A. Cutolo, G. Mensitieri, and L. Nicolais, Appl. Phys. Lett. 85, 5349 (2004).
[CrossRef]

2002 (1)

1999 (1)

1982 (1)

M. Monerie, IEEE J. Quantum Electron. 18, 535 (1982).
[CrossRef]

Achaerandio, M.

Arregui, F. J.

Ashwell, G. J.

Bhatia, V.

Campopiano, S.

P. Pilla, A. Iadicicco, L. Contessa, S. Campopiano, A. Cutolo, M. Giordano, and A. Cusano, IEEE Photon. Technol. Lett. 17, 1713 (2005).
[CrossRef]

Contessa, L.

P. Pilla, A. Iadicicco, L. Contessa, S. Campopiano, A. Cutolo, M. Giordano, and A. Cusano, IEEE Photon. Technol. Lett. 17, 1713 (2005).
[CrossRef]

Cusano, A.

P. Pilla, A. Iadicicco, L. Contessa, S. Campopiano, A. Cutolo, M. Giordano, and A. Cusano, IEEE Photon. Technol. Lett. 17, 1713 (2005).
[CrossRef]

M. Giordano, M. Russo, A. Cusano, G. Mensitieri, and G. Guerra, Sens. Actuators B 109, 177 (2005).
[CrossRef]

M. Giordano, M. Russo, A. Cusano, A. Cutolo, G. Mensitieri, and L. Nicolais, Appl. Phys. Lett. 85, 5349 (2004).
[CrossRef]

Cutolo, A.

P. Pilla, A. Iadicicco, L. Contessa, S. Campopiano, A. Cutolo, M. Giordano, and A. Cusano, IEEE Photon. Technol. Lett. 17, 1713 (2005).
[CrossRef]

M. Giordano, M. Russo, A. Cusano, A. Cutolo, G. Mensitieri, and L. Nicolais, Appl. Phys. Lett. 85, 5349 (2004).
[CrossRef]

Del Villar, I.

Giordano, M.

P. Pilla, A. Iadicicco, L. Contessa, S. Campopiano, A. Cutolo, M. Giordano, and A. Cusano, IEEE Photon. Technol. Lett. 17, 1713 (2005).
[CrossRef]

M. Giordano, M. Russo, A. Cusano, G. Mensitieri, and G. Guerra, Sens. Actuators B 109, 177 (2005).
[CrossRef]

M. Giordano, M. Russo, A. Cusano, A. Cutolo, G. Mensitieri, and L. Nicolais, Appl. Phys. Lett. 85, 5349 (2004).
[CrossRef]

Guerra, G.

M. Giordano, M. Russo, A. Cusano, G. Mensitieri, and G. Guerra, Sens. Actuators B 109, 177 (2005).
[CrossRef]

Iadicicco, A.

P. Pilla, A. Iadicicco, L. Contessa, S. Campopiano, A. Cutolo, M. Giordano, and A. Cusano, IEEE Photon. Technol. Lett. 17, 1713 (2005).
[CrossRef]

James, S. W.

Lalanne, P.

Love, J. D.

A. W. Snyder and J. D. Love, Optical Waveguide Theory (Chapman & Hall, 1983).

Matias, I. R.

Mensitieri, G.

M. Giordano, M. Russo, A. Cusano, G. Mensitieri, and G. Guerra, Sens. Actuators B 109, 177 (2005).
[CrossRef]

M. Giordano, M. Russo, A. Cusano, A. Cutolo, G. Mensitieri, and L. Nicolais, Appl. Phys. Lett. 85, 5349 (2004).
[CrossRef]

Monerie, M.

M. Monerie, IEEE J. Quantum Electron. 18, 535 (1982).
[CrossRef]

Nicolais, L.

M. Giordano, M. Russo, A. Cusano, A. Cutolo, G. Mensitieri, and L. Nicolais, Appl. Phys. Lett. 85, 5349 (2004).
[CrossRef]

Pilla, P.

P. Pilla, A. Iadicicco, L. Contessa, S. Campopiano, A. Cutolo, M. Giordano, and A. Cusano, IEEE Photon. Technol. Lett. 17, 1713 (2005).
[CrossRef]

Rees, N. D.

Russo, M.

M. Giordano, M. Russo, A. Cusano, G. Mensitieri, and G. Guerra, Sens. Actuators B 109, 177 (2005).
[CrossRef]

M. Giordano, M. Russo, A. Cusano, A. Cutolo, G. Mensitieri, and L. Nicolais, Appl. Phys. Lett. 85, 5349 (2004).
[CrossRef]

Snyder, A. W.

A. W. Snyder and J. D. Love, Optical Waveguide Theory (Chapman & Hall, 1983).

Tatam, R. P.

Zhu, Y.

Y. Zhu, “Fabrication of long period gratings and their applications in optical fibre communications and sensing systems,” Ph.D. dissertation (University of Johannesburg, 2002).

Appl. Phys. Lett. (1)

M. Giordano, M. Russo, A. Cusano, A. Cutolo, G. Mensitieri, and L. Nicolais, Appl. Phys. Lett. 85, 5349 (2004).
[CrossRef]

IEEE J. Quantum Electron. (1)

M. Monerie, IEEE J. Quantum Electron. 18, 535 (1982).
[CrossRef]

IEEE Photon. Technol. Lett. (1)

P. Pilla, A. Iadicicco, L. Contessa, S. Campopiano, A. Cutolo, M. Giordano, and A. Cusano, IEEE Photon. Technol. Lett. 17, 1713 (2005).
[CrossRef]

Opt. Express (2)

Opt. Lett. (2)

Sens. Actuators B (1)

M. Giordano, M. Russo, A. Cusano, G. Mensitieri, and G. Guerra, Sens. Actuators B 109, 177 (2005).
[CrossRef]

Other (2)

Y. Zhu, “Fabrication of long period gratings and their applications in optical fibre communications and sensing systems,” Ph.D. dissertation (University of Johannesburg, 2002).

A. W. Snyder and J. D. Love, Optical Waveguide Theory (Chapman & Hall, 1983).

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Figures (4)

Fig. 1
Fig. 1

Effective refractive indices of the LP 02 LP 07 cladding modes versus the surrounding refractive index in HRI-coated fiber with (a) 150 nm thin film and (b) 300 nm thin film.

Fig. 2
Fig. 2

Transmission spectrum of a 150 nm coated LPG for several values of SRI in the range 1.33–1.449.

Fig. 3
Fig. 3

Wavelength shifts of several cladding modes versus the surrounding refractive index for a 150 nm sPS-coated LPG.

Fig. 4
Fig. 4

Wavelength shift of a higher cladding mode versus the surrounding refractive index for a 180 nm sPS-coated LPG.

Equations (1)

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2 π λ ( n eff , 01 n eff , 0 i ) + s 0 [ ζ 01 , 01 ( λ ) ζ 0 i , 0 i ( λ ) ] = 2 π Λ ,

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