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:
Sep. 22, 1998
Filed:
Jul. 18, 1997
Applicant:
Inventors:
Atsushi Takeuchi, Kawasaki, JP;
Yoshiaki Nakata, Kawasaki, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01S / ; H01S / ;
U.S. Cl.
CPC ...
372 45 ; 372 96 ;
Abstract
An optical semiconductor device includes a plurality of quantum structures in an active layer thereof, wherein each of the quantum structures is confined in at least two of the three, mutually perpendicular dimensions, and wherein at least two of the quantum structures are separated with a distance that allows tunneling of carriers therebetween.