WDM soliton transmission system using dispersion slope compensators

A new scheme of dispersion slope compensator by writing Bragg gratings at d ifferent positions in a dispersion compensation fiber is proposed for the w avelength division multiplexing soliton transmission system. This scheme ca n compensate in-line for the accumulated dispersion of;each channel and sup press the dispersive waves which are caused by the incomplete filtering of the signals of the neighboring channels by using Fabry-Perot or Butterworth filters and the different propagating paths of the signals of the differen t channels in the dispersion slope compensator.