Optimized TeraLight/spl trade//Reverse TeraLight/sup /spl copy// dispersion-managed link for 40 Gbit/s dense WDM ultra long-haul transmission systems

We present here numerical simulations showing that to alternate +8 ps/(nm.km) and -16 ps/(nm.km) chromatic dispersion fibers is an optimized solution for 40 Gbit/s-based dense WDM ultra long-haul RZ systems. Experimental measurements on such a 200 km-long dispersion map show an ultra-flattened dispersion profile.