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:
Nov. 11, 2003
Filed:
Aug. 14, 2001
Applicant:
Inventor:
Kazuo Fukagai, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S 5/00 ; H01L 2/100 ;
U.S. Cl.
CPC ...
H01S 5/00 ; H01L 2/100 ;
Abstract
The present invention provides a ridge waveguide structure of a cladding layer in a semiconductor light emitting device. The ridge waveguide structure comprises: at least a current injection region; and current non-injection regions adjacent to facets and separating the current injection region from the facets, wherein the current non-injection regions are smaller in height than the at least current injection region, and wherein the at least current injection region and the current non-injection regions have a uniform width at least at a lower level than an intermediate level of the ridge waveguide structure.