Patents Represented by Law Firm Lee, Mann, Smith, MacWilliams, Sweeney & Ohlson
  • Optical amplifier gain control
    Patent number: 6166850
    Abstract: In an optical transmission system employing optical amplifiers a method of regulating the gain of such an amplifier uses a non-linear control system whose non-linearity of operation is provided at least in part by the enabling/disabling of a portion of the control system by the operation of a transient magnitude threshold sensor.
    Type: Grant
    Filed: November 4, 1998
    Date of Patent: December 26, 2000
    Assignee: Nortel Networks Limited
    Inventors: Kim Byron Roberts, Franz Li Hsien Mok, Richard Achile Habel, Nigel Edward Jolley