The unique, low-cost and low-power solution is optimized for Data Center Interconnect (DCI), Metro Aggregation and Distributed Access at distances up to 80 km and leverages the newly standardized PAM4 signal modulation in QFSP28 form factor transceivers. Ara features eight 200Gbps/channel PAM4 host electrical interfaces, and an octal 200Gbps/lane PAM4 optical interface with integrated high-swing laser-modulator. Oslo, Norway – 13 December 2018 – Smartoptics, a leading provider of open optical networking solutions, today announced its new, cost optimized, fully automated 100G DWDM solution (https://connect. com/sb-stepping-up-to-100g-dwdm-free-download). This solution provides open 100G DWDM. PAM4 is a four-level pulse amplitude-modulated signal, which can be electrical or optical. Previous generations of serial data standards used non-return-to-zero (NRZ) encoding, rendering bits distinct high- and. This Pulse-Amplitude Modulation 4-Level (PAM4) application note explains PAM4 theory and operation while introducing the Intel® Stratix® 10 TX device capability and the realization of 57. We then dem-onstrate a switch-pluggable, 4. 5 W, 100 Gbit/s, silicon-photonics-based, PAM4, QSFP-28 module to transport Ethernet data directly over DWDM for layer 2/3 connection between switches at data. This document examines key technologies used in constructing LinkX cables and transceivers for 100G-PAM4, 50G-PAM4, and 25G-NRZ -modulation based interconnects used to create 800G, 400G, 200G, 100G and 25Gb/s aggregate data rates. The following technologies are used in various combinations to.