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Related Experiment Videos

High-index-contrast waveguides and devices.

Mee-Koy Chin1, Chee-Wei Lee, Shuh-Ying Lee

  • 1The authors are with the Photonics Research Center, School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore. emkchin@ntu.edu.sg

Applied Optics
|June 3, 2005
PubMed
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High-index-contrast ridge waveguides offer unique properties for photonics. Their single-mode and multimode behaviors enable compact, novel devices for optical interconnections and integrated photonic circuits.

Area of Science:

  • Photonics
  • Optical Engineering
  • Materials Science

Background:

  • Conventional waveguides have limitations in light confinement.
  • High-index-contrast materials enable novel photonic device designs.
  • Ridge waveguides offer strong lateral confinement, differing from rib waveguides.

Purpose of the Study:

  • To theoretically and experimentally investigate high-index-contrast ridge waveguides.
  • To review previous and present new results on these waveguides and their devices.
  • To explore the unique properties and applications of single-mode and multimode ridge waveguides.

Main Methods:

  • Theoretical analysis of waveguide properties.
  • Experimental fabrication and characterization of ridge waveguides.

Related Experiment Videos

  • Review of prior research on related waveguide structures.
  • Main Results:

    • Single-mode ridge waveguides exhibit subwavelength width, high birefringence, and sensitivity to parameters.
    • Multimode ridge waveguides are low loss, robust, and can achieve zero birefringence at critical widths.
    • Effective single-mode operation can be achieved through differential leakage loss or mode filtering.

    Conclusions:

    • Ridge waveguides serve as photonic wires for interconnections.
    • They form the basis for a wide range of compact photonic devices.
    • Understanding their single-mode and multimode characteristics is key to device design.