Marvell Unveils Breakthrough 400G/Lane PAM4 Technology at OFC 2025

Marvell Technology has introduced the industry’s first 400G/lane PAM4 electrical-to-optical link, marking a major milestone in data infrastructure innovation. The demonstration, showcased at OFC 2025 in San Francisco, features a complete link operating at 224 Gbaud using real silicon, representing a fourfold increase in bandwidth over today’s common 100G/lane systems and double that of the 200G/lane technology being deployed this year.

The breakthrough is the result of collaboration with optical and switch leaders including Lumentum, TeraHop, and Coherent. Demonstrations at the event include key components such as PAM4 DSPs, transimpedance amplifiers, and photonics technologies tailored for serial 400G/lane speeds.

This advancement aims to dramatically boost bandwidth and efficiency in cloud data centers and AI infrastructures, supporting faster data processing and shorter AI training times. With pluggable transceiver modules expected to dominate optical connectivity through 2030, Marvell and its partners are laying the groundwork for scalable, high-speed networks.

Marvell’s long-standing leadership in PAM4 technology is now extending into the 400G era, offering a future-ready solution for evolving connectivity demands in data-driven industries.