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:
Dec. 03, 1991
Filed:
Sep. 05, 1990
Applicant:
Inventors:
Peter Kersten, Leonberg, DE;
Helmut Hanisch, Nurtingen, DE;
Assignee:
Alcatel N.V., Amsterdam, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
385130 ; 385-3 ; 385 41 ; 385 16 ;
Abstract
A transparent substrate is covered with a metal layer which serves as an etch mask for forming a groove, and from which regions are formed which constitute electrodes. At least the groove and the adjacent areas of the substrate are then covered with a layer of a material having electrooptical properties, the material in the groove forming an optical waveguide.