Patents by Inventor Dan Blumenthal

Dan Blumenthal 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).

  • Publication number: 20070031105
    Abstract: A method for equalizing optical signal power in a group of optical signals transmitted through an optical switch in an optical transmission system. In one embodiment a group of optical signals is input into an optical switch having at least one movable mirror array with a plurality of reflectors formed thereon, the optical beam being directed onto a selected at least one reflector and wherein attenuating the optical beam is accomplished by controllably detuning at least one of the selected at least one reflector to attenuate the optical beam.
    Type: Application
    Filed: October 12, 2006
    Publication date: February 8, 2007
    Inventors: Tony Walter, Dan Blumenthal, John Bowers, Peter Hunt, Roger Helkey, Xuezhe Zheng
  • Patent number: 7142744
    Abstract: A method for equalizing optical signal power in a group of optical signals transmitted through an optical switch in an optical transmission system. In one embodiment a group of optical signals is input into an optical switch having at least one movable mirror array with a plurality of reflectors formed thereon, the optical beam being directed onto a selected at least one reflector and wherein attenuating the optical beam is accomplished by controllably detuning at least one of the selected at least one reflector to attenuate the optical beam.
    Type: Grant
    Filed: February 24, 2005
    Date of Patent: November 28, 2006
    Assignee: Calient Networks
    Inventors: Tony Walter, Dan Blumenthal, John E. Bowers, Peter Hunt, Roger J. Helkey, Xuezhe Zheng
  • Publication number: 20050152637
    Abstract: A method for equalizing optical signal power in a group of optical signals transmitted through an optical switch in an optical transmission system. In one embodiment a group of optical signals is input into an optical switch having at least one movable mirror array with a plurality of reflectors formed thereon, the optical beam being directed onto a selected at least one reflector and wherein attenuating the optical beam is accomplished by controllably detuning at least one of the selected at least one reflector to attenuate the optical beam.
    Type: Application
    Filed: February 24, 2005
    Publication date: July 14, 2005
    Inventors: Tony Walter, Dan Blumenthal, John Bowers, Peter Hunt, Roger Helkey, Xuezhe Zheng
  • Publication number: 20040120636
    Abstract: A method for equalizing optical signal power in a group of optical signals transmitted through an optical switch in an optical transmission system. In one embodiment a group of optical signals is input into an optical switch having at least one movable mirror array with a plurality of reflectors formed thereon, the optical beam being directed onto a selected at least one reflector and wherein attenuating the optical beam is accomplished by controllably detuning at least one of the selected at least one reflector to attenuate the optical beam.
    Type: Application
    Filed: December 10, 2003
    Publication date: June 24, 2004
    Applicant: Calient Networks
    Inventors: Tony Walter, Dan Blumenthal, John E. Bowers, Peter Hunt, Roger J. Helkey, Xuezhe Zheng
  • Patent number: 6697547
    Abstract: A method for equalizing optical signal power in a group of optical signals transmitted through an optical switch in an optical transmission system. In one embodiment a group of optical signals is input into an optical switch having at least one movable mirror array with a plurality of reflectors formed thereon, the optical beam being directed onto a selected at least one reflector and wherein attenuating the optical beam is accomplished by controllably detuning at least one of the selected at least one reflector to attenuate the optical beam.
    Type: Grant
    Filed: May 14, 2001
    Date of Patent: February 24, 2004
    Assignee: Calient Networks
    Inventors: Tony Walter, Dan Blumenthal, John E. Bowers, Peter Hunt, Roger J. Helkey, Xuezhe Zheng
  • Patent number: 6643425
    Abstract: An optical switch having switch mirror arrays controlled by scanning beams that reduce the amount of electrical connections required and reduce the complexity for constructing large optical switches. Movement of the switch mirror arrays is controlled by one or more scanning beams. The optical switch includes one or more arrays of optical switch inputs and outputs and one or more arrays of movable mirrors to direct light beams from the optical switch inputs to the optical switch outputs. The optical switch also includes one or more control elements to control the movable mirrors based on scanning beams directed to the one or more control elements.
    Type: Grant
    Filed: August 17, 2000
    Date of Patent: November 4, 2003
    Assignee: Calient Networks, Inc.
    Inventors: John Bowers, Chandrasekhar Pusarla, Kevin White, Dan Blumenthal, Roger Helkey, John Chong, David Welsh
  • Publication number: 20020168131
    Abstract: A method for equalizing optical signal power in a group of optical signals transmitted through an optical switch in an optical transmission system. In one embodiment a group of optical signals is input into an optical switch having at least one movable mirror array with a plurality of reflectors formed thereon, the optical beam being directed onto a selected at least one reflector and wherein attenuating the optical beam is accomplished by controllably detuning at least one of the selected at least one reflector to attenuate the optical beam.
    Type: Application
    Filed: May 14, 2001
    Publication date: November 14, 2002
    Inventors: Tony Walter, Dan Blumenthal, John E. Bowers, Peter Hunt, Roger J. Helkey, Xuezhe Zheng