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Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station
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Interlaced linear-nonlinear optical waveguide arrays.

Kyriakos Hizanidis1, Yannis Kominis, Nikolaos K Efremidis

  • 1School of Electrical and Computer Engineering, National Technical University of Athens, Athens, Greece. kyriakos@central.ntua.gr

Optics Express
|October 30, 2008
PubMed
Summary

This study explores interlaced nonlinear waveguide arrays, revealing an extra tunable band-gap. Stable discrete solitary modes are found within these band-gaps, offering new possibilities for optical systems.

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Area of Science:

  • Physics
  • Nonlinear optics
  • Condensed matter physics

Background:

  • Superlattices with interlaced linear and nonlinear components model binary waveguide arrays.
  • Existing single nonlinear lattices lack the tunable band-gap of interlaced systems.

Purpose of the Study:

  • Investigate a two-component superlattice system for binary waveguide arrays.
  • Analyze the properties and stability of discrete solitary modes in interlaced systems.

Main Methods:

  • Analytical investigation of continuous wave solutions and modulational instability.
  • Numerical testing for focusing and defocusing nonlinearity.
  • Analytical study of propagation dynamics and stability for zero Bloch momentum.

Main Results:

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  • The interlaced system exhibits an additional band-gap controlled by relative detuning.
  • Stable discrete solitary modes (dipole, in-phase, staggered) are identified in the band-gaps.
  • The system serves as a discretization for continuous models in modulated media.

Conclusions:

  • Interlaced nonlinear waveguide arrays offer enhanced control via tunable band-gaps.
  • Stable discrete solitary modes are a key feature of these systems.
  • This research provides a foundation for designing advanced optical devices.