Silicon-Organic Hybrid (SOH) Mach-Zehnder Modulator (MZM) for Single-Carrier IMDD Line Rates of 500 Gbit/s and Beyond

We demonstrate PAM4, PAM6, and PAM8 signaling using a 280 µm-long SOH Mach-Zehnder modu-lator (MZM). We achieve PAM4 symbol rates of 204 GBd and PAM8 line rates of 528 Gbit/s (412.5 Gbit/s net data rate) – record-high values for devices on the silicon photonic platform.