Patents by Inventor Jeffrey David Christoph

Jeffrey David Christoph 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).

  • Auto shutdown for distributed raman amplifiers on optical communication systems
    Patent number: 6807001
    Abstract: A method and apparatus for detecting if an optical module has been disconnected from a fiber span or if there has been a break in the span, and for automatically reducing the output signal level of the optical module such that the output signal level is within an acceptable safety limit. Also disclosed is a system and technique for automatically resetting a Raman pump unit once the source of an optical leak has been located and addressed.
    Type: Grant
    Filed: April 9, 2002
    Date of Patent: October 19, 2004
    Assignee: Sycamore Networks, Inc.
    Inventors: Jinendra Kumar Ranka, Jeffrey David Christoph, Erie Anthony Kilpatrick