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. 08, 1992
Filed:
Nov. 27, 1991
Applicant:
Inventor:
Takaaki Hirata, tokyo, JP;
Assignee:
Optical Measurement Technology Development Co., Ltd., Musashino, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
437129 ; 437133 ; 372 43 ; 372 46 ; 372 96 ; 148D / ; 148D / ; 357 16 ; 357 17 ;
Abstract
A semiconductor optical device having a quantum well structure which can easily integrate plural optical devices of band gaps which are different from each other, and yet can achieve a high coupling coefficient by means of disordering the quantum well structure to form a waveguide region except for the portion which is used as an active region. Non-absorbing edges can be formed on the semiconductor laser on the optically integrated circuits by disordering the facets of the quantum well structure with ion implantation and thermal processing.