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Diffractionless flow of light in all-optical microchips.

Alongkarn Chutinan1, Sajeev John, Ovidiu Toader

  • 1Department of Physics, University of Toronto, 60 St. George Street, Toronto, Ontario, Canada M5S-1A7.

Physical Review Letters
|April 12, 2003
PubMed
Summary
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We developed a hybrid 2D-3D photonic band gap (PBG) heterostructure for controlling light emission and enabling diffraction-free propagation in microcircuits. This breakthrough addresses leaky modes and losses in integrated optics.

Area of Science:

  • Optics and Photonics
  • Materials Science
  • Nanotechnology

Background:

  • Integrated optics face challenges with diffractive losses and leaky modes.
  • Controlling light propagation at the microscale is crucial for advanced optical circuits.

Purpose of the Study:

  • To introduce a novel hybrid 2D-3D photonic band gap (PBG) heterostructure.
  • To achieve complete control over spontaneous light emission from atoms.
  • To enable planar light-wave propagation in microcircuits without diffraction.

Main Methods:

  • Fabrication of a hybrid heterostructure by intercalating 2D photonic crystal layers with defects into a 3D PBG material.
  • Utilizing three-dimensional (3D) light localization for waveguiding.
  • Engineering defects within the 2D photonic crystal layers.

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Main Results:

  • Demonstrated complete control of spontaneous light emission.
  • Achieved diffraction-free light propagation through micron-scale air waveguide networks.
  • Successfully addressed the issue of leaky modes and diffractive losses.

Conclusions:

  • The hybrid 2D-3D PBG heterostructure offers a versatile solution for integrated optics.
  • This approach enables precise control of light at the nanoscale.
  • The technology paves the way for advanced microelectronic and photonic devices.