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Updated: May 24, 2026

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
11:08

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Published on: November 30, 2012

Negative coupling between defects in waveguide arrays.

J M Zeuner1, M C Rechtsman, R Keil

  • 1Institute of Applied Physics, Friedrich-Schiller-Universität, Jena, Germany.

Optics Letters
|February 21, 2012
PubMed
Summary
This summary is machine-generated.

Negative coupling constants in waveguide lattices were experimentally demonstrated. This occurs when defects are negative and an odd number of lattice sites separates defect guides.

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Area of Science:

  • Photonics and optical physics.
  • Waveguide optics and defect engineering.

Background:

  • Waveguide lattices are crucial for controlling light propagation.
  • Understanding coupling constants is essential for designing optical devices.

Purpose of the Study:

  • To experimentally demonstrate negative coupling constants in defect waveguide lattices.
  • To identify the conditions required for achieving negative coupling.

Main Methods:

  • Experimental setup involving a waveguide lattice with defect guides.
  • Measurement of coupling constants through optical experiments.

Main Results:

  • Successful experimental demonstration of negative coupling constants.
  • Identified that negative defects and an odd number of lattice sites are necessary for negative coupling.

Conclusions:

  • Negative coupling constants are achievable in specific waveguide lattice configurations.
  • The findings provide insights into controlling light-matter interactions in engineered optical systems.