The Large Bandwidth and Large Group Velocity for the Single Guided Mode in an Asymmetric Photonic Crystal Slab Waveguide

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概要

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• An asymmetric photonic crystal slab waveguide was analyzed for the first time. This waveguide exhibits an inclined dispersion relation (i.e., a large group velocity) without a mini-band gap and thus has a large bandwidth for the single guided mode (14% of the center-band frequency). This structure consists of a line defect and air holes $\pi$-phase-shifted on one side of the line defect. The present asymmetric structure prevents Bragg reflection from occurring in the light propagation direction at the interface between the photonic crystal and the line defect. The frequency of the TE-like guided mode decreases more than that of the TM-like guided mode when the waveguide width is increased.

• Publication Office, Japanese Journal of Applied Physics, Faculty of Science, University of Tokyoの論文
• 2003-06-15

著者

• Susa Nobuhiko

  Ntt Basic Research Laboratories

• Susa Nobuhiko

  Ntt Basic Research Laboratories Ntt Corporation

関連論文

• Transmittance for a Two-Dimensional Photonic-Crystal Structure Consisting of Cylinders and Liquid Crystal
• Change in Transmittance due to Free carriers in Two-Dimensional Photonic Crystals
• The Large Bandwidth and Large Group Velocity for the Single Guided Mode in an Asymmetric Photonic Crystal Slab Waveguide
• Threshold Gain due to Distributed-Feedback in Two-Dimensional Triangular- and Square-Lattice Photonic Crystal Lasers
• Towards Perfect Vertical Photonic Band Gap Confinement in a Photonic Crystal Slab

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