Patents by Inventor Marcos Antonio Brandão Sanches

Marcos Antonio Brandão Sanches 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).

  • Patent number: 10197725
    Abstract: A multimode optical fiber for continuous transmission of electromagnetic radiation at high power, wherein the fiber defines a fiber axis and includes a core and a cladding surrounding the core, and wherein the multimode optical fiber is a multimode graded-index fiber, the refraction index profile in the fiber essentially following formula (1): n ? ( r ) = { n 1 ? [ 1 - 2 ? ( r a ) g ? ? ] 1 ? / ? 2 , r < a n 2 , r > a ( 1 ) ? = n 1 2 - n 2 2 2 ? n 1 2 ( A ) NA = n 1 2 - n 2 2 ( B ) where ? is formula (A), r is the distance from the fiber axis, n(r) is the nominal refractive index as a function of distance from the fiber axis, n1 is the nominal refractive index on the axis of the fiber, n2 is the refractive index of the cladding, a is the core radius, and g is a parameter that defines the shape of the profile, where the core diameter 2a is between 90 UM and 190 ?M, the parameter g is between 1.
    Type: Grant
    Filed: November 7, 2014
    Date of Patent: February 5, 2019
    Assignee: PRYSMIAN S.p.A
    Inventors: João Carlos Vieira Da Silva, Evandro Lee Anderson Spìnola De Souza, Valeria Garcia, João Batista Rosolem, Claudio Floridia, Marcos Antonio Brandão Sanches
  • Publication number: 20180335563
    Abstract: A multimode optical fiber for continuous transmission of electromagnetic radiation at high power, wherein the fiber defines a fiber axis and includes a core and a cladding surrounding the core, and wherein the multimode optical fiber is a multimode graded-index fiber, the refraction index profile in the fiber essentially following formula (1): n ? ( r ) = { n 1 ? [ 1 - 2 ? ( r a ) g ? ? ] 1 ? / ? 2 , r < a n 2 , r > a ( 1 ) ? = n 1 2 - n 2 2 2 ? n 1 2 ( A ) NA = n 1 2 - n 2 2 ( B ) where ? is formula (A), r is the distance from the fiber axis, n(r) is the nominal refractive index as a function of distance from the fiber axis, n1 is the nominal refractive index on the axis of the fiber, n2 is the refractive index of the cladding, a is the core radius, and g is a parameter that defines the shape of the profile, where the core diameter 2a is between 90 UM and 190 ?M, the parameter g is between 1.
    Type: Application
    Filed: November 7, 2014
    Publication date: November 22, 2018
    Inventors: João Carlos VIEIRA DA SILVA, Evandro Lee Anderson SPINOLA DE SOUZA, Valeria GARCIA, João Batista ROSOLEM, Claudio FLORIDIA, Marcos Antonio Brandão SANCHES
  • Patent number: 7231146
    Abstract: Communicating a signal includes receiving the signal at a primary device of a switching system, where the primary device is associated with a primary path along which the signal is propagating. A primary overmodulation signal associated with the primary path is generated. The absence of the primary overmodulation signal is detected, and an operating signal is sent from the primary device to a secondary device of the switching system, where the secondary device is associated with a secondary path. The operating signal operates to initiate propagation of the signal along the secondary path.
    Type: Grant
    Filed: April 30, 2003
    Date of Patent: June 12, 2007
    Assignee: Cisco Photonics Italy S.r.L.
    Inventors: Fulvio Arecco, Marcos Antonio Brandão Sanches, Francesca Loseto, Piergiovanni Matrona, Mario Tamburello
  • Patent number: 7035545
    Abstract: An amplifier including a first input for a first at least two input signals having mutually distinct wavelengths, a first output for a first at least two output signals, the first at least two output signals having said mutually distinct wavelengths, a first circulator including an input port coupled to the first input, an output port coupled to the first output, and an intermediate port coupled to a first end of a selective reflection circuit, and, a second circulator including an intermediate port coupled to a second end of the selective reflection circuit, an output port coupled to a first selective splitter, and an input port coupled to a second selective splitter, wherein the first selective splitter and the second selective splitter are centered about a first selected wavelength amongst the mutually distinct wavelengths.
    Type: Grant
    Filed: October 14, 2003
    Date of Patent: April 25, 2006
    Assignee: Avanex Corporation
    Inventors: Fausto Meli, Marcos Antonio Brandão Sanches
  • Publication number: 20030194232
    Abstract: Communicating a signal includes receiving the signal at a primary device of a switching system, where the primary device is associated with a primary path along which the signal is propagating. A primary overmodulation signal associated with the primary path is generated. The absence of the primary overmodulation signal is detected, and an operating signal is sent from the primary device to a secondary device of the switching system, where the secondary device is associated with a secondary path. The operating signal operates to initiate propagation of the signal along the secondary path.
    Type: Application
    Filed: April 30, 2003
    Publication date: October 16, 2003
    Applicant: Cisco Photonics Italy S.r.L.
    Inventors: Fulvio Arecco, Marcos Antonio Brandao Sanches, Francesca Loseto, Piergiovanni Matrona, Mario Tamburello
  • Patent number: 6580530
    Abstract: An optical communication system for communicating at least a first optical system. The optical communication system includes a first primary guided optical path and a first secondary guided optical path, through each of which the first optical signal is configured to propagate. A first primary optical amplifier is provided in the first primary guided optical path and is configured to transmit an overmodulation frequency of the first optical signal. A first secondary optical amplifier is provided in the first secondary guided optical path and is configured to transmit the overmodulation frequency of the first optical signal. A controller controls propagation of the first optical signal from the first primary guided optical path to the first secondary guided optical path based on the detected presence of the overmodulation frequency.
    Type: Grant
    Filed: May 28, 1999
    Date of Patent: June 17, 2003
    Assignee: Cisco Photonics Italy S.r.L.
    Inventors: Fulvio Arecco, Marcos Antonio Brandão Sanches, Francesca Loseto, Piergiovanni Matrona, Mario Tamburello
  • Publication number: 20020196495
    Abstract: A method for adding at least one added signal to, and dropping at least one dropped signal from at least one of a first transmission path and a second transmission path, the method including (i) creating a first series of signals and a second series of signals, the signals having distinct wavelengths, the first series and the second series being mutually staggered in wavelength, (ii) transmitting the first series to the first transmission path and the second series to the second transmission path, and, (iii) providing a wavelength selective switch along at least one of the first transmission path and the second transmission path, the wavelength selective switch for adding the at least one added signal and dropping the at least one dropped signal.
    Type: Application
    Filed: August 20, 2002
    Publication date: December 26, 2002
    Applicant: Corning O.T.I.
    Inventors: Giorgio Grasso, Fausto Meli, Marcos Antonio Brandao Sanches, Mario Tamburello
  • Publication number: 20020171914
    Abstract: An amplifier including a first input for a first at least two input signals having mutually distinct wavelengths, a first output for a first at least two output signals, the first at least two output signals having said mutually distinct wavelengths, a first circulator including an input port coupled to the first input, an output port coupled to the first output, and an intermediate port coupled to a first end of a selective reflection circuit, and, a second circulator including an intermediate port coupled to a second end of the selective reflection circuit, an output port coupled to a first selective splitter, and an input port coupled to a second selective splitter, wherein the first selective splitter and the second selective splitter are centered about a first selected wavelength amongst the mutually distinct wavelengths.
    Type: Application
    Filed: July 2, 2002
    Publication date: November 21, 2002
    Inventors: Fausto Meli, Marcos Antonio Brandao Sanches
  • Patent number: 6456406
    Abstract: An optical self-healing-ring communication network is described which includes: a first optical communication line, forming a closed optical path; at least two add/drop nodes for optical signals, optically connected along the line; a second optical communication line forming a closed optical path and optically connected to the optical-signal add/drop nodes. Defined in the network are first and second mutually opposite. travel directions of the optical signals, with respect to the position of the optical-signal add/drop nodes. At least one of said nodes further comprises selection means, controlled by the optical signals, for the selective dropping of the optical signals from one of the communication lines. At least one of the optical-signal add/drop nodes further includes means for the simultaneous input of at least one optical signal in the first direction along the first communication line and in the second direction along the second communication line.
    Type: Grant
    Filed: March 3, 1999
    Date of Patent: September 24, 2002
    Assignee: Cisco Photonics Italy S.r.L.
    Inventors: Fulvio Arecco, Fausto Meli, Marcos Antonio Brandao Sanches
  • Patent number: 6437888
    Abstract: Device for adding/dropping optical signals into/from an optical transmission path, including input means for at least two optical signals with distinct wavelengths, comprising spectral selection means for sending at least a first signal to a first optical path and at least a second signal to a second optical path, at least a wavelength selective switching means along at least one of said first and second optical paths, for adding and dropping at least one optical signal having a predetermined wavelength selected from the optical signal wavelengths.
    Type: Grant
    Filed: July 9, 2001
    Date of Patent: August 20, 2002
    Assignee: Corning O.T.I., Inc.
    Inventors: Giorgio Grasso, Fausto Meli, Marcos Antonio Brandão Sanches, Mario Tamburello
  • Patent number: 6414769
    Abstract: An optical amplifier having a first input for inputting first optical signals propagating in a first direction having a first series of mutually distinct wavelengths; a first output for outputting second optical signals propagating in a first direction having the first series of mutually distinct wavelengths; a first amplifier for amplifying the first optical signals; a first optical circulator having an input port coupled to the first amplifier, an intermediate port coupled to a first end of a first selective reflection circuit, and an output port coupled to the first output; and a second optical circulator having an intermediate port coupled to a second end of the first reflection circuit, an output port coupled to a first selective splitter, and an input port coupled to a second selective splitter, where the input and output ports have passbands centered around a first predetermined wavelength of the first series.
    Type: Grant
    Filed: May 17, 1999
    Date of Patent: July 2, 2002
    Assignee: Corning O.T.I., Inc.
    Inventors: Fausto Meli, Marcos Antonio Brandão Sanches
  • Patent number: 6288810
    Abstract: A multi-channel optical telecommunication system and method for transmitting optical signals having distinct wavelengths. Spectral selection is provided for the optical signals to add or drop signals of predetermined wavelengths. The signals are divided into at least two series of different wavelengths. The signals of each series are dropped or signals of corresponding wavelengths are added, and the signals are then combined.
    Type: Grant
    Filed: May 7, 1999
    Date of Patent: September 11, 2001
    Assignee: Pirelli Cavi e Sistemi S.p.A.
    Inventors: Giorgio Grasso, Fausto Meli, Marcos Antonio Brandão Sanches, Mario Tamburello
  • Patent number: 5903371
    Abstract: An optical self-healing-ring communication network is described which include: a first optical communication line, forming a closed optical path; at least two add/drop nodes for optical signals, optically connected along the line; a second optical communication line forming a closed optical path and optically connected to the optical-signal add/drop nodes. Defined in the network are first and second mutually opposite travel directions of the optical signals, with respect to the position of the optical-signal add/drop nodes. At least one of said nodes further comprises selection means, controlled by the optical signals, for the selective dropping of the optical signals from one of the communication lines. At least one of the optical-signal add/drop nodes further include means for the simultaneous input of at least one optical signal in the first direction along the first communication line and in the second direction along the second communication line.
    Type: Grant
    Filed: October 15, 1996
    Date of Patent: May 11, 1999
    Assignee: Pirelli Cavi S.p.A.
    Inventors: Fulvio Arecco, Fausto Meli, Marcos Antonio Brandao Sanches