Optical logic gates for OR-AND-NOT, NOR and exclusive-XNOR operations in waveguides consisting of nonlinear material are numerically investigated by means of FD-BPM (Finite Difference Beam Propagation Method). The proposed devices are designed utilizing the self-routing characteristics of nonlinear X-crossing and Y-branching structures when they are operated with one input beam or two. The numerical simulations show that the proposed structures can favorably be applied to optical data processing and computing as fundamental logic gates.

Original languageEnglish
Pages (from-to)209-222
Number of pages14
JournalJournal of Nonlinear Optical Physics and Materials
Issue number2
Publication statusPublished - 2001


  • Finite difference beam propagation method
  • Nonlinear waveguide
  • Optical logic


Dive into the research topics of 'Nonlinear waveguides for optical logic and computation'. Together they form a unique fingerprint.

Cite this