Patents by Inventor Talal Azfar

Talal Azfar has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Ultra-high speed, active polymer-silica hydrid, single control voltage MMI-based 1-BY-N packet switch and WG-based WDM packet router/TDM converter and methods of making same
    Patent number: 6847751
    Abstract: A structure for effecting a transition from a passive waveguide to an active waveguide or from an active waveguide to a passive waveguide of the present invention. The inventive device comprises a first cladding; a first core disposed within the first cladding; and a ground plane disposed over the first cladding and the core. A second cladding is disposed on the ground plane. A second core is disposed on the second cladding. A third cladding is disposed on the second cladding and the second core and an electrode is disposed on top of the third cladding. The inventive structure enables the construction of a novel an advantageous switch comprising an input port; an output port; and plural waveguides disposed between the input port and the output port. Each waveguide includes a first cladding; a first core disposed within the first cladding; and a ground plane disposed over the first cladding and the core. A second cladding is disposed on the ground plane. A second core is disposed on the second cladding.
    Type: Grant
    Filed: August 11, 2003
    Date of Patent: January 25, 2005
    Assignee: Pacific Wave Industries, Inc.
    Inventors: Daniel H. Chang, Talal Azfar, Harold R. Fetterman, Joseph Michael
  • Ultra-high speed, active polymer-silica hybrid, single control voltage MMI-based 1-by-N packet switch and WG-based WDM packet router/TDM converter and methods of making same
    Publication number: 20040071402
    Abstract: A structure for effecting a transition from a passive waveguide to an active waveguide or from an active waveguide to a passive waveguide of the present invention. The inventive device comprises a first cladding; a first core disposed within the first cladding; and a ground plane disposed over the first cladding and the core. A second cladding is disposed on the ground plane. A second core is disposed on the second cladding. A third cladding is disposed on the second cladding and the second core and an electrode is disposed on top of the third cladding. The inventive structure enables the construction of a novel an advantageous switch comprising an input port; an output port; and plural waveguides disposed between the input port and the output port. Each waveguide includes a first cladding; a first core disposed within the first cladding; and a ground plane disposed over the first cladding and the core. A second cladding is disposed on the ground plane. A second core is disposed on the second cladding.
    Type: Application
    Filed: August 11, 2003
    Publication date: April 15, 2004
    Inventors: Daniel H. Chang, Talal Azfar, Harold R. Fetterman, Joseph Michael
  • Ultra-high speed, active polymer-silica hybrid, single control voltage MMI-based 1-BY-N packet switch and WG-based WDM packet router/TDM converter and methods of making same
    Publication number: 20040047544
    Abstract: A structure for effecting a transition from a passive waveguide to an active waveguide or from an active waveguide to a passive waveguide of the present invention. The inventive device comprises a first cladding; a first core disposed within the first cladding; and a ground plane disposed over the first cladding and the core. A second cladding is disposed on the ground plane. A second core is disposed on the second cladding. A third cladding is disposed on the second cladding and the second core and an electrode is disposed on top of the third cladding. The inventive structure enables the construction of a novel an advantageous switch comprising an input port; an output port; and plural waveguides disposed between the input port and the output port. Each waveguide includes a first cladding; a first core disposed within the first cladding; and a ground plane disposed over the first cladding and the core. A second cladding is disposed on the ground plane. A second core is disposed on the second cladding.
    Type: Application
    Filed: August 11, 2003
    Publication date: March 11, 2004
    Inventors: Daniel H. Chang, Talal Azfar, Harold R. Fetterman, Joseph Michael
  • Ultra-high speed, active polymer-silica hybrid, single control voltage MMI-based 1-by-N packet switch and WG-based WDM packet router/TDM converter and methods of making same
    Patent number: 6643419
    Abstract: A structure for effecting a transition from a passive waveguide to an active waveguide or from an active waveguide to a passive waveguide of the present invention. The inventive device comprises a first cladding; a first core disposed within the first cladding; and a ground plane disposed over the first cladding and the core. A second cladding is disposed on the ground plane. A second core is disposed on the second cladding. A third cladding is disposed on the second cladding and the second core and an electrode is disposed on top of the third cladding. The inventive structure enables the construction of a novel an advantageous switch comprising an input port; an output port; and plural waveguides disposed between the input port and the output port. Each waveguide includes a first cladding; a first core disposed within the first cladding; and a ground plane disposed over the first cladding and the core. A second cladding is disposed on the ground plane. A second core is disposed on the second cladding.
    Type: Grant
    Filed: December 5, 2001
    Date of Patent: November 4, 2003
    Assignee: Pacific Wave Industries, Inc.
    Inventors: Daniel H. Chang, Talal Azfar, Harold R. Fetterman, Joseph Michael
  • Ultra-high speed, active polymer-silica hybrid, single control voltage MMI-based 1-by-N packet switch and WG-based WDM packet router/TDM converter and methods of making same
    Publication number: 20030103710
    Abstract: A structure for effecting a transition from a passive waveguide to an active waveguide or from an active waveguide to a passive waveguide of the present invention. The inventive device comprises a first cladding; a first core disposed within the first cladding; and a ground plane disposed over the first cladding and the core. A second cladding is disposed on the ground plane. A second core is disposed on the second cladding. A third cladding is disposed on the second cladding and the second core and an electrode is disposed on top of the third cladding. The inventive structure enables the construction of a novel an advantageous switch comprising an input port; an output port; and plural waveguides disposed between the input port and the output port. Each waveguide includes a first cladding; a first core disposed within the first cladding; and a ground plane disposed over the first cladding and the core. A second cladding is disposed on the ground plane. A second core is disposed on the second cladding.
    Type: Application
    Filed: December 5, 2001
    Publication date: June 5, 2003
    Inventors: Daniel H. Chang, Talal Azfar, Harold R. Fetterman, Joseph Michael