40-Gbit/s RZ-Transmission over 1200 km using an Integrated Electroabsorption-Modulated Laser

We report pseudo-linear transmission of a single-channel 40-Gb/s signal over non-zero dispersion-shifted fiber (NZDSF) using an integrated electroabsorption-modulated laser (EML) in the transmitter for data modulation. RZ-format transmission over 1200-km is achieved with a measured Q of 15.6 dB or bit-error-rate of 10 sup -9.