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Sanjai Parthasarathi discusses the live demonstration of a 200G four-level pulse amplitude modulation (PAM4) Mach-Zehnder modulated laser.
The demo featured a distributed feedback laser (DFB) and Mach-Zehnder modulator combined monolithically in a photonic integrated circuit (PIC) that enables 200G PAM4 for 1.6T transceivers with up to 10 km reach.
