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Discrete surface solitons.

Konstantinos G Makris1, Sergiy Suntsov, Demetrios N Christodoulides

  • 1College of Optics and CREOL, University of Central Florida, Orlando, Florida 32816, USA. demetri@creol.ucf.edu

Optics Letters
|October 4, 2005
PubMed
Summary
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Discrete nonlinear surface waves can exist in waveguide lattices above a specific power threshold. Researchers investigated the excitation and stability of these self-trapped edge states.

Area of Science:

  • Nonlinear optics
  • Waveguide physics
  • Condensed matter theory

Background:

  • Waveguide lattices support various optical phenomena.
  • Nonlinear surface waves are crucial for optical device applications.
  • Understanding self-trapped states is key to controlling light propagation.

Purpose of the Study:

  • To theoretically demonstrate the existence of discrete nonlinear surface waves in waveguide lattices.
  • To investigate the conditions required for the formation of these surface waves.
  • To analyze the excitation characteristics and stability of the identified surface states.

Main Methods:

  • Theoretical modeling of nonlinear wave propagation in discrete waveguide arrays.
  • Analysis of self-trapped states localized at the lattice edge.

Related Experiment Videos

  • Numerical simulations to study excitation and stability properties.

    • Main Results:

    • Existence of discrete nonlinear surface waves is theoretically confirmed.
    • These surface waves are self-trapped states localized at the edge of the waveguide lattice.
    • A minimum power threshold is required for the formation of these nonlinear surface waves.
    • Systematic investigation of excitation characteristics and stability properties was performed.

    Conclusions:

    • Discrete nonlinear surface waves are feasible in waveguide lattices.
    • These waves represent a unique class of self-trapped states.
    • The findings provide insights into light localization and control in engineered optical media.