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Optica Publishing Group
  • Journal of Lightwave Technology
  • Vol. 29,
  • Issue 5,
  • pp. 656-660
  • (2011)

Modeling Study of Nonreciprocal Phase Shift in Magnetooptic Asymmetric Slot Waveguides

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Abstract

Asymmetric slot waveguides with a magnetooptic material filling the slot are studied for their nonreciprocal phase shift properties. General properties and performance are first evaluated by a one-dimensional silicon slot waveguide model, to find optimal asymmetric waveguide profiles. The results are verified with a two-dimensional calculation for a realistic optimal waveguide structure. The achieved ratio of the waveguide nonreciprocal phase shift to the specific Faraday rotation of the magnetooptic material is at a level comparable with semiconductor waveguides having a garnet cladding. The geometry may be applied to silicon-based vertical slot waveguides for quasi-TE polarization, which provides integration potential with active components in Si photonic circuits.

© 2011 IEEE

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