FDTD computational study of nanoplasmonic guiding structures for non-paraxial spatial solitons

Zachary Lubin*, Jethro H. Greene, Allen Taflove

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


Spatial solitons with beamwidths on the order of a wavelength are studied numerically in the context of their propagation paths being modified by planar nanoplasmonic structures.The prospect of such media in certain configurations used as soliton guiding devices is quantitatively assessed. A finite-difference time-domain model is used that incorporates a Kerr nonlinearity and linear dispersion, and solves for the vector components of the fields. A soliton effective beamsplitter, collimator, and dual-beam waveguide are demonstrated. Interesting aspects of the reflection and transmission properties of gold films is discussed, including first-time reporting of the Goos-Hänchen effect in the nonlinear regime for a transverse magnetic, ultra-narrow spatial soliton incident on a gold slab. The results provided herein are significant for nonlinear switching and routing applications toward future all-optical computing devices.

Original languageEnglish (US)
Pages (from-to)2679-2684
Number of pages6
JournalMicrowave and Optical Technology Letters
Issue number12
StatePublished - Dec 2012


  • FDTD
  • nonlinear optics
  • numerical techniques
  • optical solitons

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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