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:
Feb. 09, 2010
Filed:
May. 18, 2007
Osamu Mitomi, Nagoya, JP;
Yuichi Iwata, Nagoya, JP;
Jungo Kondo, Nishikamo-Gun, JP;
Kenji Aoki, Ichinomiya, JP;
Tetsuya Ejiri, Kasugai, JP;
Osamu Mitomi, Nagoya, JP;
Yuichi Iwata, Nagoya, JP;
Jungo Kondo, Nishikamo-Gun, JP;
Kenji Aoki, Ichinomiya, JP;
Tetsuya Ejiri, Kasugai, JP;
NGK Insulators, Ltd., Nagoya, JP;
Abstract
An optical waveguide structure has a slab type photonic crystal and an optical waveguide provided in the photonic crystal. The photonic crystal has a slab of a dielectric film and a plurality of lattice columns each having dielectric pillars. The dielectric pillars included in the lattice columns at least in n'th order (n represents 1, 2, 3, 4 and 5) in distance with respect to said optical waveguide, respectively, has a planar shape of an equilateral polygon or exact circle. At least one of the dielectric pillars included in the lattice columns at least in n'th order (n represents 2, 3, 4 and 5) with respect to the optical waveguide has a size rn different from a fundamental size ro.