March 12 News: Recently, Broadcom announced its single-lane 400G PAM-4 DSP—Tarus™ BCM83640—manufactured on a 3nm process. Optimized for 1.6T optical module solutions, the product features unprecedented bandwidth density and energy efficiency. everaging a 400G-per-lane serial optical interface, it enables optical module manufacturers to deliver low-power 1.6T pluggable modules at lower costs, meetingng bandwidth demands of AI data centers.

The Taurus™ BCM83640 is a monolithic 3nm 1.6 (8:4) PAM-4 digital signal processor with integrated laser drivers, leading the industry in bit error rate (BER) and power consumption. It has been verified for interoperability with Bradcom's 400G EML and PD, while complying with all IEEE and OIF standards. It supports long-reach links for chip-to-module electrical interfaces and supports optical modules raning from 1.6T to 3.2T.

400G-per-lane technology represents the next-generation evolution of 200G-per-lane architecture, marking a cical step in bandwidth scaling for high-performance networks and AI infrastructure. 1.6T pluggable modules utilizing the Taurus BCM83640 double the bandwidth per one, enabling up to 102.4T switching capacity in a 1U height system, significantly enhancing bandwidth density for AI optical in.

In addition, the deployment of 400G-per-lane optical interfaces lays the foundation for future 3.2T module solons based on 400G-per-lane electrical interfaces, thereby supporting the development of 204.8T switches.

Vijay Janapaty, Vice Presidenteral Manager of Broadcom's Physical Layer Products Division, stated: "Broadcom's Taurus DSP platform based on 400G-per-lane is laying the foundation for next-g AI networks and data center interconnects. As the industry's first 1.6T DSP based on 400G-per-lane I/O, Taurus dles per-lane throughput, paving the way for next-generation 3.2T optical modules. More importantly, Taurus advances IMDD technology to 400G-per-lher reducing power consumption and driving the roadmap for cost-optimized AI and cloud network interconnect solutions."

Vladimir Kozlov, CEO and Founder of LightCountinoted: "Over the next five years, shipments of 1.6T and 3.2T optical modules are expected to exceed 100 million units, with nearly half utilizing 400G optical technology. High-speed optical interconnects are critical for AI cluster operations, and doubling lane rates has proven to be an effective strategy for addressing bandwidth The arrival of the first 400G-per-lane solutions is exciting."

Richard Huang, CEO of Eoptolink, stated: "Our goal is to drive ition. Taurus is not just a product milestone, but a catalyst for future connectivity. By delivering the industry's first fully functional 448G-per-lane optical module, are ushering in a new era of scale, speed, and possibility. Optical modules based on Taurus seamlessly bridge today's 102.4T networks with future switch architectureansformative bandwidth growth. With Taurus, we are not only advancing technology, but shaping the future of 448G."