The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 25, 2007
Filed:
Nov. 10, 2006
Kiyokatsu Ikemoto, Yokohama, JP;
Akinari Takagi, Yokosuka, JP;
Hikaru Hoshi, Yokohama, JP;
Kazuya Nobayashi, Kawasaki, JP;
Aihiko Numata, Inagi, JP;
Kiyokatsu Ikemoto, Yokohama, JP;
Akinari Takagi, Yokosuka, JP;
Hikaru Hoshi, Yokohama, JP;
Kazuya Nobayashi, Kawasaki, JP;
Aihiko Numata, Inagi, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
At least one exemplary embodiment is directed to a waveguide including a plurality of linear defects of a three-dimensional photonic crystal, the plurality of linear defects include a first defect formed by changing the medium of some of columnar structures to a medium different from that of the columnar structures and a second linear defect formed by shifting the position or changing the shape of some of the columnar structures extending in the same direction as the first linear defect, and the first linear defect and the second linear defect are disposed apart by 0.5 times the out-of-plane lattice period or more in the stacking direction of the three-dimensional photonic crystal.