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:
May. 11, 2004
Filed:
Oct. 28, 2002
Norihiko Sekine, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A laser diode comprises a first cladding layer having a first conductivity, a second cladding layer having a second conductivity, an active layer located between the first cladding layer and the second cladding layer and extending from one end surface to the other end surface, a first electrode configured to inject a carrier with a first polarity into the active layer via the first cladding layer, and a second electrode configured to inject a carrier with a second polarity into the active layer via the second cladding layer. The active layer comprises a first active region and a second active region, which are arranged alternately and periodically from one end surface to the other end surface in the direction of light propagation, and the first active region and the second active region define type-II hetero junction between them.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile