Ultra-low power SiGe driver-IC for high-speed electroabsorption modulated DFB lasers

A small footprint electroabsorption modulated DFB laser TOSA with an ultra-low power SiGe driver with a power efficiency of 3.59 pJ/bit is demonstrated. Good optical eye openings up to 56 GBd NRZ and 64 Gb/s PAM-4 were obtained. The novel SiGe EML driver consumes 84 mW only.