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. 07, 2004
Filed:
Apr. 30, 2002
Helmut Albrecht, München, DE;
Ingo Baumann, Zorneding, DE;
Gerhard Heise, Neubiberg, DE;
Zhan Gao, München, DE;
Infineon Technologies AG, Munich, DE;
Abstract
A configuration for multiplexing and/or demultiplexing the signals of at least two optical wavelength channels, is described. Provided in this case is a grating device having an optical grating, a first optical free beam region and a second optical free beam region. Accordingly, radiation is coupled into and out of the first free beam region via a coupling device which effects a flattening and/or widening of the field distribution of the light coupled in or out, at least in the plane of the first free beam region. This permits a transmission characteristic of the configuration to be flattened.