Demonstrating 'super-fast' data transmission, a new benchmark for Datacenters

This collaborative project aims to meet the growing bandwidth demands of artificial intelligence (AI) and machine learning (ML) applications, helping to develop energy-efficient 3.2 terabit interfaces for future datacenter networks.

Keysight is supporting the market in the early development phase of the 448 Gbps optical interface. During this phase, the team is exploring various modulation schemes, including PAM4, PAM6, and PAM8. It is noteworthy that the market has selected PAM4 as the preferred modulation scheme for 224 Gbps optical transmission, demonstrating its commitment to increasing data rates and setting new standards for the future.

AI and ML applications require real-time data processing at lightning speeds. 448 Gbps speeds accelerate data movement between compute nodes and the network, reducing latency and improving AI/ML model performance. As models become increasingly complex, they require higher data throughput to support unhindered scalability. Additionally, this breakthrough improves data center efficiency, reduces operating costs, and minimizes environmental impact.

Two Keysight M8199B waveform generators with NTT’s advanced frequency-domain signal sorter were used in the demonstration to generate a 448 Gbps electrical signal with 224 Gbaud PAM4. This signal drove Lumentum’s externally modulated indium phosphide (InP) laser (EML), demonstrating the potential of high-speed, energy-efficient optical interconnects. The hardware also successfully generated a 240 Gbaud PAM4 signal for the demonstration solution.

This solution demonstration showcases the latest 224GBaud and PAM4 technologies, enabling 448Gbps of data per lane, paving the way for the development of energy-efficient 3.2T interfaces for data center networking (DCN). The result is a quantum leap in data rate enhancement and improved signal integrity.

This joint demonstration includes: Keysight's M8199B Arbitrary Waveform Generator, the fastest AWG on the market, operating at 256 GSa/s with an analog bandwidth greater than 80 GHz.

Keysight's N1032A DCA-X Sampling Oscilloscope, the ideal tool for high-speed optical signal analysis with optical bandwidths up to 120 GHz.

NTT's frequency domain signal arranger, supplied under the Keysight M8159A brand, extends the bandwidth of the AWG M8199B. It is accompanied by Lumentum's high-bandwidth externally modulated InP Laser (EML).

“This collaborative project showcases cutting-edge advances in high-speed optical communications and showcases the collective strengths of Keysight, NTT Innovative Devices and Lumentum,” said Dr. Joachim Peerlings, vice president of Network and Data Center Solutions at Keysight Technologies. “This demonstration is another important milestone in Keysight’s journey to advance the AI infrastructure market, laying the foundation for transformative new innovations for generations to come.”

The Keysight M8199B Arbitrary Waveform Generator and Keysight N1032A/B DCA-X Sampling Oscilloscope are products in the Keysight Artificial Intelligence (KAI) architecture, a portfolio of end-to-end solutions designed to help customers enhance artificial intelligence (AI) processing capabilities in their data centers.

The joint demonstration 448 Gbps solution was first exhibited in booth #1301 during OFC 2025, April 1-3, at the Moscone Center in San Francisco, California.

Ha Phan

Source: https://doanhnghiepvn.vn/chuyen-doi-so/cong-nghe-24h/trinh-dien-truyen-du-lieu-sieu-toc-doi-chuan-moi-cho-cac-datacenter/20250423083549992