Broadcom Corporation recently unveiled its latest 5nm 200 G/channel optical pulse amplitude modulation digital signal processor, the BCM85822, at the 49th European Conference on Optical Communications. This chip integrates a laser driver, operates at a speed of 200 G per channel, employs PAM-4 modulation, and excels in metrics such as bit error rate and power consumption. The BCM85822 chip can achieve a switching capacity of 51.2 terabits, significantly enhancing data center network density. The new chip will also help achieve the goal of both electrical and optical interfaces reaching 200G, facilitating the migration of AI workloads from 800G to 1.6T. Broadcom estimates that the BCM85822 will be officially launched in mid-2024.