Experimental study of electro-optic crosstalk in parallel silicon photonic Mach-Zehnder modulators

The electro-optic crosstalk between two parallel silicon Mach-Zehnder modulators is characterized. Up to 1.6 dB power penalty is observed for 36-Gb/s on-off-keying signals with a ~-20 dB crosstalk, posing challenge to dense photonic integration.