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Optica Publishing Group
  • Journal of Lightwave Technology
  • Vol. 18,
  • Issue 9,
  • pp. 1297-
  • (2000)

Photonic Bandgaps with Defects and the Enhancement of Faraday Rotation

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Abstract

We investigate enhancement of magnetooptical rotation in periodic magnetic garnet thin-film stacks with defects using a combination of coupled-mode theory and matrix calculations. We prove that a combination of high rotation per unit length and high output is unattainable for a symmetric grating with a single central defect. We demonstrate that the addition of a second defect introduces sufficient degrees of freedom to allow high transmission for a much larger range of rotation angles than was previously possible. We present a number of designs with emphasis on achieving 45 rotation in very short propagation lengths.

[IEEE ]

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