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:
Jun. 29, 2004
Filed:
Mar. 18, 2002
Monika Bauer, Senzig, DE;
Jörg Bauer, Berlin, DE;
Jürgen Schneider, Teltow, DE;
Christian Dreyer, Niederw{haeck over (o)}rresbach, DE;
Huihai Yao, Berlin, DE;
Norbert Keil, Berlin, DE;
Crispin Zawadzki, Berlin, DE;
Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., München, DE;
Abstract
The present invention relates in general to optical waveguide devices, which preferably are planar, e.g., optical arrayed waveguide gratings (AWGs), multiplexers/demultiplexers, optical add/drop multiplexers and the like. More particularly, the present invention provides integrated optical waveguide devices having central wavelengths (or channel wavelengths) which are temperature insensitive in that they do not or do almost not shift upon temperature variations in the environment. Such devices are also called athermalized or athermal devices. Preferably, most or all parts of such devices including waveguides, cladding material and the substrate itself consist of organic polymeric materials. The devices of the invention substantially remedy the problems encountered with the limitations and disadvantages of common devices as known in the prior art.