Patents by Inventor Guido Roggero

Guido Roggero 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).

  • METHOD FOR OBTAINING A LASER DIODE
    Publication number: 20170331247
    Abstract: Method for obtaining a laser diode (1) with vertical mirrors, includes the steps of providing (100) a substrate (2) having optical layers (4, 6, 8); performing (102) a first dry etching of said substrate (2), so as to get two opposite transversal facets (10) having a predetermined depth, which represent the lateral walls of a cavity (12); cleaning (104) the bottom of said cavity (12); depositing (106) a coating layer (52) on the whole substrate (2); performing (108) a second etching, so as to free the bottom of the cavity (12) from the coating layer (52); performing (110) a third deep etching of the bottom of the cavity (12); and removing (112) the coating layer (52), so as to obtain said diode (1) with transversal mirrors (10).
    Type: Application
    Filed: May 10, 2017
    Publication date: November 16, 2017
    Inventors: Guido Roggero, Giancarlo Meneghini, Giuliana Morello, Alessandro Stano, Marzia Rosso
  • Integrated modulator/laser assembly and a method of producing same
    Patent number: 7548574
    Abstract: An laser/modulator assembly includes a laser source, such as a distributed feedback (DFB) laser, and a modulator, such as an electro-absorption modulator (EAM), integrated along a common waveguide. The waveguide has a distal end bent to define an inner side of the bent waveguide. A low reflectivity facet is arranged at the distal end of the waveguide, and a mirror is arranged at the inner side of the distal end of the waveguide to prevent any back reflection into the EAM waveguide from said low reflectivity facet, and the lateral trenches typically associated therewith.
    Type: Grant
    Filed: June 15, 2005
    Date of Patent: June 16, 2009
    Assignee: Avago Technologies Fiber IP (Singapore) Pte. Ltd.
    Inventors: Claudio Coriasso, Rui Yu Fang, Guido Roggero, Marzia Rosso, Simone Codato
  • Integrated modulator-laser structure and a method of producing same
    Publication number: 20070081566
    Abstract: In an arrangement comprised of an electro-absorption modulator integrated with a laser source, the electro-absorption modulator includes a respective metal contact pad, wherein the metal pad is positioned over a localised semi-insulating layer island, such as a Fe—InP island
    Type: Application
    Filed: September 27, 2006
    Publication date: April 12, 2007
    Inventors: Marzia Rosso, Simone Codato, Rui Fang, Guido Roggero
  • Integrated modulator/laser assembly and a method of producing same
    Publication number: 20060078014
    Abstract: An laser/modulator assembly includes a laser source, such as a distributed feedback (DFB) laser, and a modulator, such as an electro-absorption modulator (EAM), integrated along a common waveguide. The waveguide has a distal end bent to define an inner side of the bent waveguide. A low reflectivity facet is arranged at the distal end of the waveguide, and a mirror is arranged at the inner side of the distal end of the waveguide to prevent any back reflection into the EAM waveguide from said low reflectivity facet, and the lateral trenches typically associated therewith.
    Type: Application
    Filed: June 15, 2005
    Publication date: April 13, 2006
    Inventors: Claudio Coriasso, Rui Fang, Guido Roggero, Marzia Rosso, Simone Codato