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. 20, 2007
Filed:
Mar. 06, 2003
Applicants:
Atsushi Sugitatsu, Tokyo, JP;
Susumu Noda, Kyoto, JP;
Inventors:
Atsushi Sugitatsu, Tokyo, JP;
Susumu Noda, Kyoto, JP;
Assignees:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Kyoto University, Kyoto, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 6/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
In an optical device, a slab layer has an active layer sandwiched between two cladding layers. Periodic air holes are present in the slab layer. A linear defect region is present in a part of the air hole structures. As a result, laser oscillation is generated at the band end in a two-dimensional photonic crystal waveguide mode.