Patents by Inventor Shahab Etemad

Shahab Etemad 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).

  • Method and system for securing wavelength division multiplex systems
    Patent number: 6404524
    Abstract: A system and method for securing DWDM networks that includes adding background (e.g., white) noise to a level up to the larger of the cross-talk signal or the background channel noise (e.g., amplified spontaneous emission level). The system comprises a white noise generator appropriately placed so that any leaked signals are masked by the white noise generated. Accordingly, only signals intended to be dropped are recoverable because all other signals would not be recoverable from the background white noise.
    Type: Grant
    Filed: November 10, 1999
    Date of Patent: June 11, 2002
    Assignee: Telcordia Technologies, Inc.
    Inventor: Shahab Etemad