Patents by Inventor Edmond Joseph Murphy

Edmond Joseph Murphy 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).

  • Power regulation in optical networks
    Patent number: 5970201
    Abstract: The invention disclosed is a circuit for regulating optical power levels. Electrooptic attenuators are used to control optical output intensity by means of feedback loops from the outputs of the attenuators to the electrodes of the attenuators which determine the amount of light going to the outputs. The attenuators may be used in combination with an optical switch array in a wavelength division multiplexing system.
    Type: Grant
    Filed: September 18, 1997
    Date of Patent: October 19, 1999
    Assignee: Lucent Technologies Inc.
    Inventors: Philip John Anthony, Fred Ludwig Heismann, Edmond Joseph Murphy, Timothy O. Murphy