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  • Conference on Lasers and Electro-Optics
  • OSA Technical Digest (Optica Publishing Group, 2000),
  • paper PD22

Slab modes in photonic crystal optical waveguides

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Photonic crystals 1,2 with line defects can be used for guiding light. In all the proposals and demonstrations of photonic bandgap (PBG) waveguides, the guiding modes were restricted to the photonic bandgap. We show that there exist some guiding modes outside the photonic bandgap. We also show that by using these modes, which we refer to as the slab modes 3, efficient power transfer from a dielectric slab waveguide to a PBG waveguide over a range of frequency wider than the photonic bandgap (PBG) can be obtained. Different properties of the slab modes of a PBG waveguide is also discussed.

© 2000 Optical Society of America

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