M. Ishizaka et al., MODULATOR INTEGRATED DFB LASERS WITH MORE THAN 600-KM TRANSMISSION CAPABILITY AT 2.5 GB S/, IEEE photonics technology letters, 9(10), 1997, pp. 1406-1408
The modulator integrated DFB laser diodes with more than 600-km transm
ission capability over normal fiber at 2.5 Gb/s, have been reproducibl
y achieved. The longest transmission length obtained in the experiment
is as long as 800 km.