Patents by Inventor Giovanni Ghione

Giovanni Ghione 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).

  • Electro-optic modulators with internal impedance matching
    Patent number: 6909817
    Abstract: A resonant optical modulator includes an electro-optical substrate, an optical waveguide formed in the substrate and having a variable index of refraction, and an active modulator electrode formed on the substrate in relation to the waveguide to effect electro-optical variation of the index of refraction upon application to the electrode of a modulating signal. An interface port formed on the substrate provides the modulating signal to the electrode from a signal source and has an impedance. An electrical structure, formed on the substrate and coupled to the interface port and the electrode, makes an impedance of the optical modulator substantially equal to the impedance of the signal source. The electrical structure includes a delay line and a stub formed on the substrate.
    Type: Grant
    Filed: July 9, 2004
    Date of Patent: June 21, 2005
    Assignee: Avanex Corporation
    Inventors: Sergio Bosso, Emilio Casaccia, Davide Frassati, Giovanni Ghione, Aldo Perasso, Marco Pirola
  • Electro-optic modulators with internal impedance matching
    Publication number: 20040247220
    Abstract: A resonant optical modulator includes an electro-optical substrate, an optical waveguide formed in the substrate and having a variable index of refraction, and an active modulator electrode formed on the substrate in relation to the waveguide to effect electro-optical variation of the index of refraction upon application to the electrode of a modulating signal. An interface port formed on the substrate provides the modulating signal to the electrode from a signal source and has an impedance. An electrical structure, formed on the substrate and coupled to the interface port and the electrode, makes an impedance of the optical modulator substantially equal to the impedance of the signal source. The electrical structure includes a delay line and a stub formed on the substrate.
    Type: Application
    Filed: July 9, 2004
    Publication date: December 9, 2004
    Inventors: Sergio Bosso, Emilio Casaccia, Davide Frassati, Giovanni Ghione, Aldo Perasso, Marco Pirola
  • Electro-optic modulators with internal impedance matching
    Patent number: 6763151
    Abstract: A resonant optical modulator includes an electro-optical substrate, an optical waveguide formed in the substrate and having a variable index of refraction, and an active modulator electrode formed on the substrate in relation to the waveguide to effect electro-optical variation of the index of refraction upon application to the electrode of a modulating signal. An interface port formed on the substrate provides the modulating signal to the electrode from a signal source and has an impedance. An electrical structure, formed on the substrate and coupled to the interface port and the electrode, makes an impedance of the optical modulator substantially equal to the impedance of the signal source. The electrical structure includes a delay line and a stub formed on the substrate.
    Type: Grant
    Filed: July 3, 2000
    Date of Patent: July 13, 2004
    Assignee: Avanex Corporation
    Inventors: Sergio Bosso, Emilio Casaccia, Davide Frassati, Giovanni Ghione, Aldo Perasso, Marco Pirola