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. 19, 2002
Filed:
Dec. 01, 2000
Gian-Luca Bona, Hedingen, CH;
Roland W. Germann, Wangen, CH;
Bert Jan Offrein, Langnau am Albis, CH;
Huub Salemink, Adliswil, CH;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A singlemode lightwaveguide-coupling element is positioned between an initial waveguide section which there has a basic final width (W ) and a final waveguide section which there has a basic initial width (W ) which is bigger than the basic final width (W ). The lightwave directions of both waveguide sections are inclined at a predetermined total angle (&Dgr;&agr;) towards each other. Starting from the initial waveguide section, the lightwaveguide element comprises intermediate waveguide sections each of which at its end has a lightwave direction which is inclined towards the lightwave direction at its opposite end at an inclination angle (&Dgr;&agr; ), such that the sum of all inclination angles equals the predetermined total angle (&Dgr;&agr;).