Patent ID: 6452718
Filing Date: 2002-09-17
Classification: H04B,H04J

Abstract:
An optical channel equalizer comprising:at least one Q-port direction-dependent router, where Q is greater than or equal to 3; one 1Ã—N WDM (de)multiplexer, where N is greater than or equal to 2; N-number of amplifying waveguides; at least N-number of fibre amplifiers; and at least N-number of Bragg gratings; at least N-number of variable optical pump laser attenuators; at least one optical splitter; and at least one pump laser per optical splitter, wherein at least one of the ports on the direction-dependent router is disposed on a first side of the WDM (de)multiplexer, wherein each amplifying waveguide includes at least one further amplifier and at least one Bragg grating, such that at least one fibre amplifier will be disposed between a Bragg grating and the WDM demultiplexer, wherein at least one variable optical pump laser attenuator is disposed between each Bragg grating and a first side of said optical splitter, and wherein the pump laser is disposed on a second side of the optical splitter.