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. 15, 1983
Filed:
Apr. 01, 1981
Hans-Georg Unger, Braunschweig, DE;
Licentia Patent-Verwaltungs-GmbH, Frankfurt am Main, DE;
Abstract
A connection piece connected for propagating light between two single mode optical waveguides having respectively different cross sections, the piece being in the form of a transition from one cross section to the other. The waveguides and the piece are composed of a transparent core member forming a light propagating path from one waveguide to the other via the transition, and a cladding material surrounding the core member. The core member part of the piece is formed to vary gradually and continuously in cross section in the direction of light propagation, and the piece has a length which is two to four times the free space wavelength of the light to be propagated divided by the difference between the index of refraction of the core member and the index of refraction of the cladding material.