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Brillouin light scattering from surface acoustic waves in a subwavelength-diameter optical fibre

Author

Listed:
  • Jean-Charles Beugnot

    (Institut FEMTO-ST, Université de Franche-Comté, CNRS)

  • Sylvie Lebrun

    (Laboratoire Charles Fabry, Institut d’Optique, Université Paris-Sud, CNRS)

  • Gilles Pauliat

    (Laboratoire Charles Fabry, Institut d’Optique, Université Paris-Sud, CNRS)

  • Hervé Maillotte

    (Institut FEMTO-ST, Université de Franche-Comté, CNRS)

  • Vincent Laude

    (Institut FEMTO-ST, Université de Franche-Comté, CNRS)

  • Thibaut Sylvestre

    (Institut FEMTO-ST, Université de Franche-Comté, CNRS)

Abstract

Brillouin scattering in optical fibres is a fundamental interaction between light and sound with important implications ranging from optical sensors to slow and fast light. In usual optical fibres, light both excites and feels shear and longitudinal bulk elastic waves, giving rise to forward-guided acoustic wave Brillouin scattering and backward-stimulated Brillouin scattering. In a subwavelength-diameter optical fibre, the situation changes dramatically, as we here report with the first experimental observation of Brillouin light scattering from surface acoustic waves. These Rayleigh-type surface waves travel the wire surface at a specific velocity of 3,400 m s−1 and backscatter the light with a Doppler shift of about 6 GHz. As these acoustic resonances are sensitive to surface defects or features, surface acoustic wave Brillouin scattering opens new opportunities for various sensing applications, but also in other domains such as microwave photonics and nonlinear plasmonics.

Suggested Citation

  • Jean-Charles Beugnot & Sylvie Lebrun & Gilles Pauliat & Hervé Maillotte & Vincent Laude & Thibaut Sylvestre, 2014. "Brillouin light scattering from surface acoustic waves in a subwavelength-diameter optical fibre," Nature Communications, Nature, vol. 5(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms6242
    DOI: 10.1038/ncomms6242
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    Cited by:

    1. Arjun Iyer & Yadav P. Kandel & Wendao Xu & John M. Nichol & William H. Renninger, 2024. "Coherent optical coupling to surface acoustic wave devices," Nature Communications, Nature, vol. 15(1), pages 1-9, December.

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