Patents by Inventor Carlo De Bernardi

Carlo De Bernardi 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).

  • Low cost optical amplifier
    Patent number: 7068420
    Abstract: An optical amplifier includes a substrate having disposed thereon an optical waveguide, the optical waveguide having an active region with Si nanocrystals dispersed in an erbium doped glass matrix. A light source is arranged to irradiate the optical waveguide with pump electromagnetic radiation. The amplifier also includes means for suitably shaping an input electromagnetic field to be amplified into the active region of the optical waveguide.
    Type: Grant
    Filed: July 14, 2005
    Date of Patent: June 27, 2006
    Inventors: Luigi Tallone, Carlo De Bernardi
  • Low cost optical amplifier
    Publication number: 20060012853
    Abstract: An optical amplifier includes a substrate having disposed thereon an optical waveguide, the optical waveguide having an active region with Si nanocrystals dispersed in an erbium doped glass matrix. A light source is arranged to irradiate the optical waveguide with pump electromagnetic radiation. The amplifier also includes means for suitably shaping an input electromagnetic field to be amplified into the active region of the optical waveguide.
    Type: Application
    Filed: July 14, 2005
    Publication date: January 19, 2006
    Inventors: Luigi Tallone, Carlo De Bernardi
  • Method of adjusting the operation characteristics of integrated optical devices
    Patent number: 5359682
    Abstract: A method of adjusting the operation of optical networks in terms of propagation constants of guided modes in integrated optical devices, allowing a considerable number of out of tolerance devices to be recovered by depositing on the surface where the optical guides are manufactured, once the normal fabrication process is completed, a further layer of transparent material of suitable size and refractive index.
    Type: Grant
    Filed: August 17, 1992
    Date of Patent: October 25, 1994
    Assignee: CSELT-Centro Studi E Laboratori Telecomunicazioni S.p.A.
    Inventors: Claudio Caldera, Carlo De Bernardi, Salvatore Morasca
  • Pump system for waveguide lasers or amplifiers
    Patent number: 5263036
    Abstract: A pump system for lasers or amplifiers made of a waveguide presenting a monomode active region, in which the pump radiation is launched into a multimode guide surrounding the active region. The radiation is obtained as a sum of the radiations emitted by a plurality of independent sources.
    Type: Grant
    Filed: January 17, 1992
    Date of Patent: November 16, 1993
    Assignee: Cselt-Centro Studi E Laboratori Telecomunicazioni S.p.A.
    Inventors: Carlo De Bernardi, Salvatore Morasca
  • Method of adjusting the operation characteristics of integrated optical devices
    Patent number: 5139556
    Abstract: A method of adjusting the operation of bimodal optical networks in terms of propagation constants of guided modes in integrated optical devices, allowing a considerable number of out of tolerance devices to be recovered by depositing on the surface where the optical guides are manufactured, once the normal fabrication process is completed, a further layer of transparent material of suitable size and refractive index.
    Type: Grant
    Filed: February 20, 1991
    Date of Patent: August 18, 1992
    Assignee: CSELT - Centro Studi e Laboratori Telecomunicazioni S.p.A.
    Inventors: Claudio Caldera, Carlo De Bernardi, Salvatore Morasca