Optical waveguides – Planar optical waveguide – Thin film optical waveguide
Reexamination Certificate
2007-09-25
2007-09-25
Pak, Sung (Department: 2874)
Optical waveguides
Planar optical waveguide
Thin film optical waveguide
C385S129000, C359S332000
Reexamination Certificate
active
11551741
ABSTRACT:
A three-dimensional photonic crystal of the present invention has a complete photonic band gap in a wide wavelength region and that can be easily produced. A three-dimensional photonic crystal in which a plurality of layers including a periodic-refractive-index structure are periodically stacked includes, a first layer having holes provided at lattice points of a first rectangular lattice and a second rectangular lattice, a second layer having columnar structures at lattice points of a face-centered rectangular lattice, a third layer having a periodic structure the same as that of the first layer and disposed at a shifted position, and a fourth layer having a periodic structure the same as that of the second layer.
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Hoshi Hikaru
Ikemoto Kiyokatsu
Nobayashi Kazuya
Takagi Akinari
Canon Kabushiki Kaisha
Canon U.S.A. Inc I. P. Div
Pak Sung
Smith Chad H.
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