56 Gbit/s OOK transmission with 20 GHz electronics by resonating segmented electrode InP Mach-Zehnder modulator

A resonating segmented Mach-Zehnder modulator with peaking transfer function is designed and fabricated in InP. The modulator is able to transmit a 56 Gbit/s on-off keying signal although the driver is limited to 20 GHz bandwidth. Bit error ratio over dispersion and optical signal-to-noise ratio are measured and show substantial advantage over their non-resonating counterparts.