800G optical modules provide 2× bandwidth and ~30–40% better power efficiency per bit than 400G, while reducing fiber count significantly. However, 400G remains more cost-effective for enterprise workloads, and 1. 6T is still in early deployment stages primarily targeting. With 400G modules now the baseline, 800G adoption is surging—especially across AI and hyperscaler environments—while 1. 6T modules edge closer to reality. This article unpacks the technologies powering this leap (silicon photonics, advanced modulation, and co-packaged optics), compares deployment. In this article, we address some common questions about 800G and 1. 6T silicon photonics optical modules. 6T Feature (2025-2027) Driven by the dual forces of AI large model training and inference, data centers are undergoing a profound transformation from traditional computing to intelligent computing. 6T solutions move closer to early commercialization, data center operators and hyperscalers face a critical decision: which transceiver generation best aligns with their 2026 AI workloads, infrastructure maturity, and cost targets? This. New 1. & FRANKFURT, Germany-- (BUSINESS WIRE)-- Source Photonics, a leading global provider of.