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Nonlinear polarization conversion using microring resonators.

Chris Fietz1, Gennady Shvets

  • 1Department of Physics, The University of Texas at Austin, TX 78712, USA. flounder@physics.utexas.edu

Optics Letters
|June 19, 2007
PubMed
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This study introduces a novel on-chip polarization converter using a high-Q dielectric microring resonator. It enables efficient polarization switching and predicts optical bistability for advanced photonic applications.

Area of Science:

  • Photonics
  • Optical Engineering
  • Materials Science

Background:

  • Polarization control is crucial for optical communication and sensing.
  • On-chip photonic devices offer miniaturization and integration advantages.
  • High-Q resonators enhance light-matter interactions for nonlinear effects.

Purpose of the Study:

  • To design and demonstrate an on-chip polarization converter.
  • To achieve nonlinear polarization switching at low input intensities.
  • To investigate optical bistability in a microring resonator.

Main Methods:

  • Utilizing a high-Q dielectric microring resonator.
  • Leveraging high-intensity compression within the resonator.
  • Simulating and analyzing nonlinear polarization dynamics.

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Main Results:

  • Successful design of a polarization converter for linear, circular, and elliptic states.
  • Demonstration of nonlinear polarization switching at modest input intensities.
  • Prediction of optical bistability with history-dependent output polarization.

Conclusions:

  • The proposed microring resonator is an effective platform for polarization control.
  • High-Q resonators enable efficient nonlinear optical phenomena on-chip.
  • Optical bistability offers potential for novel photonic memory and logic devices.