Ludovic Fleury

Optimized NZDSF-based link for wide-band seamless terrestrial transmissions

We have designed and manufactured an optimized nonzero dispersion shifted fibre (NZDSF) based link for wide-band seamless terrestrial transmissions through minimization of higher-order dispersion (up to 4/sup th/-order dispersion). This link is composed of a new low-slope NZDSF with optimum dispersion of /spl sim/8 ps/nm-km and slope of /spl sim/0.03 ps/nm/sup 2/-km@1550 nm and a matched dispersion compensated fibre (DCF) in a module with low and flat attenuation over the S-, C- and L-bands. A maximum link-dispersion variation of /spl plusmn/0.18 ps/nm-km over 165 nm-bandwidth ranging from 1460 to 1625 nm was experimentally demonstrated. This is to our knowledge the lowest dispersion variation reported to date over such a wide bandwidth.

Ultra-low slope medium-dispersion fiber for wide-band transmissions

Ultra-low slope medium-dispersion fiber has been designed and fabricated: dispersion is at 8 ps/nm-km, slope down to 0.009 ps/nm/sup 2/-km, while effective area is around 50 /spl mu/m/sup 2/ @1550 nm. Numerical investigations of matching DCF exhibiting high effective area and small residual dispersion are also reported.

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.