High-speed (>100 Gbit/s) EADFB laser module using flip-chip interconnection technique

High-speed optical transmitters with a flip-chip interconnection were developed. The flip-chip interconnection technique can provide a high modulation bandwidth and low electrical crosstalk. We achieved 8 × 50-Gbit/s simultaneous operation with an EADFB laser array module and 100-Gbit/s operation with an EADFB laser module.