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:
Sep. 06, 2005
Filed:
Jan. 24, 2001
Wolfgang Dultz, Frankfurt/M., DE;
Volker Maier, Mühlheim, DE;
Jörg Happ, Grossenlüder, DE;
Werner Frank, Solnhofen, DE;
Wolfgang Dultz, Frankfurt/M., DE;
Volker Maier, Mühlheim, DE;
Jörg Happ, Grossenlüder, DE;
Werner Frank, Solnhofen, DE;
Deutsche Telekom AG, Bonn, DE;
Abstract
To provide directionally dependent attenuation for an optical information transmission link using simple means without the use of an active component, it is proposed to couple two optical waveguides () having different core diameters to one another, the core diameter of the second fiber () being at least six times greater than the core diameter of the first fiber (). In this manner, it is achieved that the conduction of light signals in a predefined direction is attenuated by at least the factor 30, while, on the other hand, the light propagating in the reverse direction, is attenuated very slightly.