Patents by Inventor Michael William Marlowe

Michael William Marlowe 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).

  • Switchable-bandwidth optical receiver
    Patent number: 6862322
    Abstract: A switchable bandwidth optical receiver is implemented in a front-end of the receiver in at least one of three ways. A switchable impedance may be provided at the input to a preamplifier of the front end, the preamplifier of the front-end may have a switchable impedance therein, and/or a switchable filter may be provided at an output of the preamplifier.
    Type: Grant
    Filed: May 19, 2000
    Date of Patent: March 1, 2005
    Assignee: International Business Machines Corporation
    Inventors: John Farley Ewen, William K. Hogan, Kenneth Paul Jackson, Michael William Marlowe, Clint Lee Schow
  • Laser diode monitoring via current mirroring
    Patent number: 6661817
    Abstract: An apparatus, program product and method enable a host system to read a signal or signals that are proportional to the output power and/or the bias of a laser in a fiber optic link connected to that host system without breaking that link. By reading one or more of these signals and being aware of the laser characteristics, the “health” of the laser is known and the integrity of the link is maintained. Consequently, the host system has a predictive tool which is able identify substandard lasers and replace them before a serious, and potentially costly, data disruption occurs.
    Type: Grant
    Filed: September 18, 2001
    Date of Patent: December 9, 2003
    Assignee: International Business Machines Corporation
    Inventors: Stephen John Ames, Michael William Marlowe, Christopher K. White
  • Integrated fiber optic receiver power meter
    Patent number: 6627867
    Abstract: An apparatus, circuit arrangement and method enable a host system to read a signal that is proportional to the peak-to-peak optical power incident on a transceiver at one end of a fiber optic link without breaking that link. By reading this signal and being aware of the characteristics of the laser, the “health” of the laser is known and the integrity of the link is maintained. Consequently, the host system has a predictive tool that is able identify substandard lasers so that such lasers can be replaced before serious, and potentially costly, data disruptions occur.
    Type: Grant
    Filed: November 20, 2001
    Date of Patent: September 30, 2003
    Assignee: International Business Machines Corporation
    Inventors: Stephen John Ames, Michael William Marlowe, Christopher K. White
  • Integrated fiber optic receiver power meter
    Publication number: 20030098407
    Abstract: An apparatus, circuit arrangement and method enable a host system to read a signal that is proportional to the peak-to-peak optical power incident on a transceiver at one end of a fiber optic link without breaking that link. By reading this signal and being aware of the characteristics of the laser, the “health” of the laser is known and the integrity of the link is maintained. Consequently, the host system has a predictive tool that is able identify substandard lasers so that such lasers can be replaced before serious, and potentially costly, data disruptions occur.
    Type: Application
    Filed: November 20, 2001
    Publication date: May 29, 2003
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Stephen John Ames, Michael William Marlowe, Christopher K. White