Patents by Inventor Donald T. Newman

Donald T. Newman 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).

  • System and method for shutting off an optical energy source in a communication system having optical amplifiers
    Patent number: 6344915
    Abstract: The present invention provides a system and method for intelligently shutting down an optical energy source in a communication system having optical amplifiers upon detection of a system failure.
    Type: Grant
    Filed: June 19, 1998
    Date of Patent: February 5, 2002
    Assignee: Ciena Corporation
    Inventors: Stephen B. Alexander, Cecil D. Smith, Roy C. Litz, Robert M. Corwin, John L. Shanton, III, Donald T. Newman
  • Strain relieving fiber optic multiplexer package
    Patent number: 5887107
    Abstract: A fiber optic package is provided in which substantially zero strain is exerted on a portion of an optical fiber containing a Bragg grating. The package includes a fastener securing a first portion of the optical fiber and a mandrel, for example, around which a second portion of the fiber is looped. The Bragg grating is preferably located between the first and second portions of the optical fiber. As a result, the portion of the optical fiber containing the Bragg grating is isolated from stresses originating in parts of the optical fiber beyond the mandrel and the fastener. The portion of the optical fiber containing the Bragg grating, therefore, remains substantially stress-free.
    Type: Grant
    Filed: April 9, 1997
    Date of Patent: March 23, 1999
    Assignee: CIENA Corporation
    Inventors: Donald T. Newman, William C. Swann