DFB lasers with integrated electroabsorption modulator

The design, fabrication and testing of 1550 nm DFB lasers with monolithically integrated electroabsorption modulators are reported. System performance of butterfly-packaged devices in 10 Gbit/s NRZ transmission over standard single mode fibre (SMF) with 17 ps/nm/km dispersion is included. Among the results are l0 Gbit/s transmission without the aid of optical amplifiers up to the theoretical limit of 50 km and up to 150 km using one optical booster amplifier.