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:
Mar. 09, 1999
Filed:
Oct. 11, 1996
Applicant:
Inventor:
Seiichi Miyazawa, Zama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S / ; H04B / ;
U.S. Cl.
CPC ...
372 46 ; 359156 ; 372 50 ; 372 96 ;
Abstract
An optical semiconductor device includes a semiconductor substrate, a first region formed on the substrate and a second region formed on the substrate. The first region has a first active layer, and the second region has a second active layer. At least one of the first active layer and the second active layer contains quantum wires which extend in a cavity direction of the device. The device is constructed such that the first active layer and the second active layer can be stimulated independently from each other.