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Related Experiment Videos

Vertically coupled whispering-gallery-mode resonator waveguide.

Andrey B Matsko1, Anatoliy A Savchenkov, Lute Maleki

  • 1Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109-8099, USA. Andry.Matsko@jpl.nasa.gov

Optics Letters
|December 1, 2005
PubMed
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We present a new optical waveguide design using vertically coupled whispering-gallery-mode resonators. This structure offers tunable properties for applications like optical delay lines.

Area of Science:

  • Photonics and Waveguide Optics
  • Optical Resonators
  • Nanophotonics

Background:

  • Whispering-gallery-mode (WGM) resonators are known for their high-quality factors and potential in integrated optics.
  • Vertically coupled waveguide structures are crucial for developing compact optical circuits.
  • Low-contrast gratings offer a method for fabricating optical components with minimal backscattering.

Purpose of the Study:

  • To theoretically describe a novel configuration of a vertically coupled whispering-gallery-mode resonator waveguide.
  • To explore the tunability of waveguide properties by altering resonator geometry and inter-resonator spacing.
  • To investigate the potential application of this structure as an optical delay line.

Main Methods:

  • Theoretical modeling of a vertically coupled waveguide system.

Related Experiment Videos

  • Utilizing a chain of doughnut-shaped low-contrast ripples on a vertical cylinder.
  • Analysis of optical properties based on resonator shape and separation distance.

    • Main Results:

    • A novel waveguide configuration based on vertically coupled WGM resonators was theoretically established.
    • The waveguide properties, such as resonant frequencies and coupling strengths, can be tuned by adjusting resonator shape and separation.
    • The proposed structure demonstrates potential for use as an optical delay line.

    Conclusions:

    • The described vertically coupled WGM resonator waveguide offers a new platform for integrated photonic devices.
    • Tunability of the waveguide properties through structural modifications is a key feature.
    • The structure shows promise for applications requiring precise control of light propagation, such as optical delay lines.