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:
May. 14, 2019
Filed:
Jun. 01, 2016
Fraunhofer-gesellschaft Zur Förderung Der Angewandten Forschung E.v., Munich, DE;
Martin Schell, Berlin, DE;
Magnus Happach, Berlin, DE;
Abstract
An optical filter for an optical data transmission system, including a substrate; a first and a second reflective structure which are spaced apart from each other such that they form a Fabry-Perot cavity, and at least one optical waveguide formed on or in the substrate, via which light can be coupled into the Fabry-Perot cavity and/or out of the Fabry-Perot cavity. The Fabry-Perot cavity formed by the first and the second reflective structure at least partly is a free-beam cavity, and the waveguide is an integrated waveguide which is formed by one or more layers arranged on the substrate, and the first and the second reflective structure are at least partly arranged in a cutout of the substrate or adjoin the cutout.