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Huihai Yao
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Berlin, DE
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last 30 patents
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Patent Grant
Method and apparatus for compensating polarization-dependent freque...
Patent number
8,295,656
Issue date
Oct 23, 2012
Fraunhofer-Gesellschaft zur Forderung der Angewandten Forschung E.V.
Martin Schell
G02 - OPTICS
Information
Patent Grant
Temperature insensitive optical waveguide device
Patent number
6,757,469
Issue date
Jun 29, 2004
Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung E.V.
Monika Bauer
G02 - OPTICS
Information
Patent Grant
Digital optical switch
Patent number
6,233,377
Issue date
May 15, 2001
Heinrich-Hertz-Institut für Nachrichtentechnik Berlin GmbH
Norbert Keil
G02 - OPTICS
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Patent Grant
Thermo-optical switch
Patent number
6,215,918
Issue date
Apr 10, 2001
Heinrich-Hertz-Institut fuer Nachrichtentechnik Berlin GmbH
Norbert Keil
G02 - OPTICS
Patents Applications
last 30 patents
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Patent Application
METHOD AND APPARATUS FOR COMPENSATING POLARIZATION-DEPENDENT FREQUE...
Publication number
20100209039
Publication date
Aug 19, 2010
Martin Schell
G02 - OPTICS
Information
Patent Application
Temperature insensitive optical waveguide device
Publication number
20030175005
Publication date
Sep 18, 2003
Fraunhofer-Gesellschaft zur Forderung der angewandten Forschung e.V.
Monika Bauer
G02 - OPTICS
Information
Patent Application
Temperature insensitive optical waveguide device
Publication number
20030174991
Publication date
Sep 18, 2003
Fraunhofer-Gesellschaft zur Forderung der angewandten forschung e.V.
Monika Bauer
G02 - OPTICS