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Optica Publishing Group
  • Journal of Lightwave Technology
  • Vol. 17,
  • Issue 11,
  • pp. 2050-
  • (1999)

Resonant Coupling of Near-Infrared Radiation to Photonic Band Structure Waveguides

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Abstract

Sharp resonance features are observed in the polarized reflectivity spectra of semiconductor photonic crystals fabricated by deep periodic patterning of AlGaAs surface waveguides. Both one- (1-D) and two-dimensional (2-D) lattices are studied by angular dependent reflectivity. By comparison with theory we show that the sharp features in reflectivity arise from resonant coupling of the external radiation to the folded band structure of the photonic crystal waveguides. Wavevector selective coupling to "heavy photon" states at the edge of the photonic Brillouin zone is demonstrated for the 1-D lattices. In the case of the 2-D lattices we observe polarization mixing of the photonic bands. Theoretical reflectivity spectra were obtained from a numerical solution of Maxwells equations for the patterned waveguide and were found to be in very good agreement with experiment.

© 1999 IEEE

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