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:
Jun. 12, 2001
Filed:
Jun. 01, 1998
Applicant:
Inventors:
Assignee:
Oki Electric Industry Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01S 5/00 ;
U.S. Cl.
CPC ...
H01S 5/00 ;
Abstract
In a modulator integrated laser,a wave guide channel,in a modulator area,having a core constituted of an absorption layer,and a wave guide channel,at a laser area,having a core constituted of an active layer,are optically connected with each other by a wave guide channel,having a core constituted of a light wave guide layer,The width of the light wave guide layer,increases in a continuous manner as the distance from the modulator area,increases and the width also increases in a continuous manner as the distance from the laser area,increases, with the width achieving its maximum in the vicinity of the middle area between the modulator area,and the laser area