Observaton of tunneling of slow and fast electromagnetic modes in coupled periodic waveguides

Publication: Research - peer-reviewJournal article – Annual report year: 2011

  • Author: Ha, Sangwoo

    Australian National University, Canberra, Nonlinear Physics Centre

  • Author: Sukhorukov, Andrey A.

    Australian National University, Canberra, Nonlinear Physics Centre

  • Author: Lavrinenko, Andrei

    Plasmonics and Metamaterials, Department of Photonics Engineering, Technical University of Denmark, Ørsteds Plads, 2800, Kgs. Lyngby, Denmark

  • Author: Shadrivov, Ilya V.

    Australian National University, Canberra, Nonlinear Physics Centre

  • Author: Powell, David A.

    Australian National University, Canberra, Nonlinear Physics Centre

  • Author: Kivshar, Yuri S.

    Australian National University, Canberra, Nonlinear Physics Centre

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We report the experimental observation of tunneling of slow and fast electromagnetic modes in coupled periodic waveguides shifted longitudinally by half of modulation period. According to the symmetry analysis, such a coupler supports two electromagnetic modes with exactly matched slow or fast group velocities but different phase velocities for frequencies close to the edge of the photonic band. We confirm the predicted properties of the modes by directly extracting their dispersion and group velocities from the near-field measurements using specialized Bloch-wave spectral analysis method.
Original languageEnglish
JournalApplied Physics Letters
Publication date2011
Volume98
Issue6
Pages061909
ISSN0003-6951
DOIs
StatePublished

Bibliographical note

Copyright (2011) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

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