Dispersion-managed high-capacity ultra-long-haul transmission

The recent progress of dispersion-managed transmission technologies for ultra-long-haul wavelength-division-multiplexing (WDM) systems is reviewed. First, we discuss the dispersion-management technologies for 10 Gb/s-based WDM systems. Next, dispersion-managed technologies for higher bit rate applications are reviewed, including dispersion-managed soliton transmission. Finally, we compare the effectiveness of different modulation formats for achieving ultradense WDM transmission for future applications.