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Evaluation of a highly nonlinear microstructured optical fiber by near-field scanning optical microscopy and simulations: nonlinear coefficient and coupling losses

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Abstract

We report on the evaluation of a microstructured optical fiber (MOF) designed for non-linear signal processing applications, i.e., with a very small guided mode (waist ∼1 μm). Calculations predict an intrinsic (assuming propagation in the fundamental mode and zero-loss coupling) non-linear γ coefficient of 40 W-1 km-1 at λ=1.55 μm, but they also predict a basic multimode character. NSOM measurements validate directly the high intrinsic γ value (32±10 W-1 km-1) and also show that with an optimized coupling, the overall losses in efficiency taking into account coupling losses and weak excitation of higher-order modes and leaky modes are only 2.5 dB. This performance is adequate for use in all-optical data processing lines, all the more since it is maintained for relevant propagation lengths and peak power densities.

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Authors and Affiliations

  1. Laboratory of Photonics and Nanostructures, LPN/CNRS, route de Nozay, 91460, Marcoussis, France

    J.M. Moison, A.M. Apetrei & J.A. Levenson

  2. Unité Transmissions Photoniques, Alcatel Research and Innovation, route de Nozay, 91460, Marcoussis, France

    G. Mélin, S. Lempereur, A. Fleureau, E. Bourov & L. Gasca

Authors
  1. J.M. Moison
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  2. A.M. Apetrei
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  3. J.A. Levenson
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  4. G. Mélin
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  5. S. Lempereur
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  6. A. Fleureau
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  7. E. Bourov
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  8. L. Gasca
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Correspondence to J.M. Moison.

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PACS

42.65.Wi; 42.81.Wg

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Moison, J., Apetrei, A., Levenson, J. et al. Evaluation of a highly nonlinear microstructured optical fiber by near-field scanning optical microscopy and simulations: nonlinear coefficient and coupling losses. Appl. Phys. B 80, 73–76 (2005). https://doi.org/10.1007/s00340-004-1679-z

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  • DOI: https://doi.org/10.1007/s00340-004-1679-z

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