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Related Experiment Videos

Numerical modeling of polarization conversion in semiconductor electro-optic modulators.

Salah S A Obayya1, Shyqyri Haxha, B M Azizur Rahman

  • 1School of Engineering and Design, Brunel University, Uxbridge, Middlesex UB8 3PH, UK.

Applied Optics
|March 9, 2005
PubMed
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This study numerically simulates polarization conversion in semiconductor electro-optic modulators. It identifies fabrication imperfections as the cause of unexpected polarization conversion, offering new insights for device design.

Area of Science:

  • Photonics and Semiconductor Devices
  • Optical Waveguide Technology

Background:

  • Electro-optic waveguide modulators are crucial for optical communication.
  • Deeply etched semiconductor structures present unique fabrication challenges.
  • Understanding polarization behavior is vital for modulator performance.

Purpose of the Study:

  • To accurately simulate polarization conversion in deeply etched semiconductor electro-optic waveguide modulators.
  • To investigate the impact of fabrication imperfections on polarization conversion.
  • To identify the origin of unwanted polarization conversion.

Main Methods:

  • Utilized a powerful and versatile finite element (FE) package for numerical simulations.
  • Modeled deeply etched semiconductor waveguide structures.

Related Experiment Videos

  • Analyzed the effects of various fabrication imperfections.

    • Main Results:

    • Presented an accurate numerical simulation of polarization conversion.
    • Reported and explained, for the first time, the effect of fabrication imperfections on polarization conversion.
    • Identified the origin of unexpected polarization conversion in these devices.

    Conclusions:

    • Fabrication imperfections significantly influence polarization conversion in deeply etched semiconductor electro-optic waveguide modulators.
    • The findings provide crucial insights for optimizing modulator design and fabrication processes.
    • This work advances the understanding of polarization phenomena in advanced photonic devices.