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:
Apr. 14, 1987
Filed:
Oct. 05, 1984
Applicant:
Inventor:
Kohroh Kobayashi, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01S / ;
U.S. Cl.
CPC ...
372 50 ; 372-8 ; 372 96 ; 372108 ;
Abstract
A semiconductor laser for use as a bistable optical device in which an active semiconductor layer has corrugations of predetermined pitch on its surface and a semiconductor optical waveguide is formed on the corrugation. At least one end of the active layer is exposed at an oblique angle so that light in the active layer propagating along the direction of corrugation is reflected from the oblique face to a normal of the surface of the laser. Electrodes are provided above and below the active layer.