The development and mass production of 400G modules are advancing satisfactorily. With 400G modules now the baseline, 800G adoption is surging—especially across AI and hyperscaler environments—while 1. This article unpacks the technologies powering this leap (silicon photonics, advanced modulation, and co-packaged optics), compares deployment. Building upon its first-to-market 400G EML and PD debuted at OFC 2025, Broadcom is launching the Taurus BCM83640, the industry's first 400G/lane optical DSP optimized for 1. 6T transceiver applications, at OFC 2026. The Taurus platform of DSPs will enable the next-generation 3. 2T optical transceiver. To address these demands, operators are increasingly adopting 400G optical modules—compact, pluggable transceivers capable of delivering up to 400 Gbps per port. This shift is driven by multiple forces: hyperscale data centers require greater east-west bandwidth to support massive internal data. BOSTON (January 7, 2025) – Total shipments of leading-edge datacom optical modules are projected to tally over $9 billion for 2024, according to the latest Optical Components Report from research firm Cignal AI. 🔍 What Is a 400G Optical Module? A 400G optical module performs photoelectric conversion: With a 400 Gbps transmission rate, these modules. 400G Optical Module by Application (Data Communication, Telecom, Other), by Types (Less Than 1 km, 1 km, 2 km, 10 km, Others), by North America (United States, Canada, Mexico), by South America (Brazil, Argentina, Rest of South America), by Europe (United Kingdom, Germany, France, Italy, Spain.