This comprehensive roadmap explores the technological evolution of optical modules over the next decade, examining the innovations in modulation techniques, photonic integration, packaging, and system architectures that will enable the exponential bandwidth growth required by. This comprehensive roadmap explores the technological evolution of optical modules over the next decade, examining the innovations in modulation techniques, photonic integration, packaging, and system architectures that will enable the exponential bandwidth growth required by. XPO represents a new class of optical pluggable module designed specifically for next-generation AI data center fabrics. 6T optical modules differ primarily. 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. Silicon photonics (SiPh) offers a high degree of integration and cost-effectiveness, helping to enhance optical module performance while driving down costs. Coherent technology facilitates long-distance, high-speed transmission with exceptional signal quality. The evolution trend of data center switching chips is as follows: a rapid growth of doubling every two years. 2T must choose 5nm process node.