400G optical modules remain the cornerstone of today's hyperscale data centers. This article unpacks the technologies powering this leap (silicon photonics, advanced modulation, and co-packaged optics), compares deployment. This article provides a strategic and technology-focused roadmap for the evolution of optical modules from 400G to 800G, 1. 2T, helping data center operators make informed, future-ready upgrade decisions. Figure 1: A historical timeline charting Ethernet link speed evolution. QSFP-DD (Quad Small Form-Factor Pluggable Double Density) is a double-density compact pluggable optical module defined by the QSFP-DD MSA (Multi-Source Agreement) consortium. It provides an 8-lane electrical interface through a double-density design, supporting higher bandwidth density. It offers. Just a decade ago, 100G (100 gigabits per second) modules were the pinnacle of innovation, powering early cloud computing infrastructures.
[PDF Version]