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. 09, 1999
Filed:
Sep. 19, 1997
Applicant:
Inventor:
Hartmut Schneider, Munich, DE;
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
385125 ;
Abstract
An optical planar waveguide for conducting an optical radiation along an axis consists of a wave-conducting core that extends along the axis and a coating that extends along the axis and surrounds the core, with the coating having at least one hollow space in the solid material of the coating. The waveguide is preferably made by forming a plurality of layers and by forming recesses in one of the layers, which recesses are covered to create the hollow spaces.