Patents by Inventor Mansour I. Irshid

Mansour I. Irshid 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).

  • Optical homodyne DPSK receiver with optical amplifier
    Patent number: 5181136
    Abstract: An optical homodyne differential phase shift keying (DPSK) receiver for receiving and demodulating optical input signals, is provided with a power splitter for splitting the input signal into first and second signals, a delay is applied to the second signal, an optical amplifier optically amplifies the delayed second signal, and a balanced noise reduction circuit combines the first signal and the delayed amplified second signal to produce a demodulated output signal.
    Type: Grant
    Filed: September 20, 1990
    Date of Patent: January 19, 1993
    Assignee: The University of Ottawa
    Inventors: Mohsen Kavehrad, Mansour I. Irshid