Patents Represented by Law Firm Sughrue, Mion, Zinn, Macpaek & Seas, PLLC
  • Patent number: 6128425
    Abstract: To increase its saturation threshold very strongly without degrading its gain, whilst remaining compatible with any semiconductor amplifier structure or technology, a semiconductor optical amplifier includes an input coupler having an input port and g output ports and an output coupler having g input ports and one output port. The q output ports of the input coupler are respectively connected to the q input ports of the output coupler by q semiconductor optical amplifiers having the same amplification characteristics. Applications include transmission of optical signals and to producing "all optical" switching devices.
    Type: Grant
    Filed: August 31, 1998
    Date of Patent: October 3, 2000
    Assignee: Alcatel
    Inventors: Beatrice Dagens, Christopher Janz
  • Patent number: 6115734
    Abstract: A method of managing a system comprising a plurality of queues (F.sub.1, F.sub.2, F.sub.3, . . . F.sub.n) in which events are inserted by a transmitter (E), and a set of tasks (T.sub.1, T.sub.2, T.sub.3, . . . T.sub.n) that consume said events, the method being characterized in that each queue is associated with an indirection identifier (I.sub.1, I.sub.2, I.sub.3, . . . I.sub.n) and in that each time a transmitter seeks to insert a new event (e) in a queue, it consults the state of the indirection identifier, and where appropriate, inserts a "substitution" event (s) containing an identifier of said queue containing the new event in the queue indicated by said indirection identifier.
    Type: Grant
    Filed: May 5, 1997
    Date of Patent: September 5, 2000
    Assignee: Alcatel
    Inventor: Jean-Louis Mansion