Patent ID: 6708002
Filing Date: 2004-03-16
Classification: H04B,H04J

Abstract:
An optical transmission system for transmitting a plurality of input channels, the optical transmission system comprising:a first plurality of multiplexing units arranged in cascade with one another and each configured to receive a predetermined number of the plurality of input channels and output a WDM signal based on the predetermined number of input channels and based on a WDM signal from a previous one of the first plurality of multiplexing units in the cascade of multiplexing units; a second plurality of multiplexing units arranged in cascade with one another and each configured to receive a predetermined number of the plurality of input channels, the input channels being received by the second plurality of multiplexing units experiencing dispersion opposite to the dispersion experienced by the input channels received by the first plurality of multiplexing units; and dispersion compensation fibers each associated with one of the first plurality of multiplexing units, the dispersion compensation fibers configured to receive the WDM signals output from the associated multiplexing units and the dispersion compensation fibers having a length based on a length of fiber required to compensate for dispersion expected to be experienced by the input channels of the associated multiplexing unit and based on the length of fiber implemented in succeeding dispersion compensation fibers associated with the cascaded multiplexing units.