Keysight, NTT Innovative Devices, and Lumentum Achieve New Benchmark 448 Gbps Data Transmission for AI Data Centers
Keysight Technologies (KEYS), NTT Innovative Devices, and Lumentum have achieved a breakthrough 448 Gbps data transmission using 224 GBaud PAM4 optical technology, to be demonstrated at OFC 2025. This collaboration addresses increasing bandwidth demands for AI and machine learning applications, enabling the development of power-efficient 3.2 terabit interfaces for data center networks.
The demonstration utilizes Keysight's M8199B Arbitrary Waveform Generator, operating at 256 GSa/s with over 80 GHz analog bandwidth, combined with NTT's frequency-domain interleaver and Lumentum's InP externally-modulated laser. The achievement represents significant progress in high-speed optical communication, specifically designed for AI infrastructure requiring ultra-fast, real-time data processing.
Keysight Technologies (KEYS), NTT Innovative Devices e Lumentum hanno raggiunto un traguardo nella trasmissione dati a 448 Gbps utilizzando la tecnologia ottica PAM4 a 224 GBaud, che sarà dimostrata all'OFC 2025. Questa collaborazione risponde alle crescenti esigenze di larghezza di banda per applicazioni di intelligenza artificiale e apprendimento automatico, consentendo lo sviluppo di interfacce da 3,2 terabit ad alta efficienza energetica per reti di data center.
La dimostrazione utilizza il Generatore di Onde Arbitrario M8199B di Keysight, che opera a 256 GSa/s con oltre 80 GHz di larghezza di banda analogica, combinato con l'interleaver a dominio di frequenza di NTT e il laser modulato esternamente InP di Lumentum. Questo risultato rappresenta un progresso significativo nella comunicazione ottica ad alta velocità, progettato specificamente per infrastrutture AI che richiedono elaborazione dati in tempo reale ultra-rapida.
Keysight Technologies (KEYS), NTT Innovative Devices y Lumentum han logrado un avance en la transmisión de datos a 448 Gbps utilizando la tecnología óptica PAM4 a 224 GBaud, que se demostrará en el OFC 2025. Esta colaboración aborda las crecientes demandas de ancho de banda para aplicaciones de inteligencia artificial y aprendizaje automático, permitiendo el desarrollo de interfaces de 3.2 terabits con alta eficiencia energética para redes de centros de datos.
La demostración utiliza el Generador de Forma de Onda Arbitraria M8199B de Keysight, que opera a 256 GSa/s con más de 80 GHz de ancho de banda analógico, combinado con el entrelazador en el dominio de frecuencia de NTT y el láser modulado externamente InP de Lumentum. Este logro representa un avance significativo en la comunicación óptica de alta velocidad, diseñado específicamente para infraestructuras de IA que requieren procesamiento de datos en tiempo real ultrarrápido.
Keysight Technologies (KEYS), NTT Innovative Devices, 그리고 Lumentum은 224 GBaud PAM4 광 기술을 사용하여 448 Gbps 데이터 전송의 획기적인 성과를 달성했으며, 이는 OFC 2025에서 시연될 예정입니다. 이 협업은 인공지능 및 머신러닝 애플리케이션에 대한 증가하는 대역폭 수요를 해결하며, 데이터 센터 네트워크를 위한 전력 효율적인 3.2 테라비트 인터페이스 개발을 가능하게 합니다.
이 시연은 Keysight의 M8199B 임의 파형 생성기를 활용하며, 256 GSa/s에서 작동하고 80 GHz 이상의 아날로그 대역폭을 제공하며, NTT의 주파수 도메인 인터리버 및 Lumentum의 InP 외부 변조 레이저와 결합됩니다. 이 성과는 초고속 실시간 데이터 처리를 요구하는 AI 인프라를 위해 특별히 설계된 고속 광통신 분야에서 중요한 발전을 나타냅니다.
Keysight Technologies (KEYS), NTT Innovative Devices et Lumentum ont réalisé une avancée dans la transmission de données à 448 Gbps en utilisant la technologie optique PAM4 à 224 GBaud, qui sera démontrée lors de l'OFC 2025. Cette collaboration répond aux demandes croissantes de bande passante pour les applications d'intelligence artificielle et d'apprentissage automatique, permettant le développement d'interfaces de 3,2 téra bits à haute efficacité énergétique pour les réseaux de centres de données.
La démonstration utilise le Générateur de Forme d'Onde Arbitraire M8199B de Keysight, fonctionnant à 256 GSa/s avec plus de 80 GHz de bande passante analogique, combiné avec l'entrelaceur de domaine de fréquence de NTT et le laser InP modulé extérieurement de Lumentum. Cette réalisation représente un progrès significatif dans la communication optique à haute vitesse, spécifiquement conçue pour les infrastructures d'IA nécessitant un traitement de données en temps réel ultra-rapide.
Keysight Technologies (KEYS), NTT Innovative Devices und Lumentum haben einen Durchbruch in der Datenübertragung mit 448 Gbps erzielt, indem sie die optische Technologie PAM4 mit 224 GBaud nutzen, die auf der OFC 2025 demonstriert werden soll. Diese Zusammenarbeit adressiert die steigenden Bandbreitenanforderungen für KI- und maschinelles Lernen-Anwendungen und ermöglicht die Entwicklung von energieeffizienten 3,2 Terabit-Schnittstellen für Rechenzentrumsnetzwerke.
Die Demonstration nutzt Keysights M8199B Arbitrary Waveform Generator, der mit 256 GSa/s bei über 80 GHz analoger Bandbreite arbeitet, kombiniert mit NTTS Frequenzbereichs-Interleaver und Lumentums extern moduliertem InP-Laser. Dieser Erfolg stellt einen bedeutenden Fortschritt in der Hochgeschwindigkeits-Optokommunikation dar, die speziell für KI-Infrastrukturen entwickelt wurde, die ultraschnelle Echtzeit-Datenverarbeitung erfordern.
- Breakthrough in 448 Gbps data transmission technology positions KEYS at forefront of AI infrastructure development
- Successful demonstration of next-generation technology enabling 3.2T optical interfaces
- Strategic collaboration with industry leaders NTT and Lumentum strengthens market position
- None.
Insights
Keysight's joint demonstration of 448 Gbps data transmission represents a significant technological milestone with strategic implications. This achievement, using 224 GBaud PAM4 optical technology, positions Keysight at the cutting edge of high-speed networking essential for AI infrastructure.
The technical specifications are remarkable - Keysight's M8199B Arbitrary Waveform Generator operates at 256 GSa/s with 80+ GHz bandwidth, establishing their testing equipment as essential in developing next-generation optical communications. This early R&D work will influence upcoming 3.2T optical interfaces that data centers desperately need for AI workloads.
What's particularly notable is Keysight's approach to the AI infrastructure bottleneck. As AI models grow increasingly complex, the interconnect speeds between compute resources become the critical constraint. By demonstrating 448 Gbps transmission (effectively doubling current capabilities), Keysight is addressing precisely where AI data centers face their most pressing technical challenges.
The collaboration with NTT and Lumentum creates a powerful technical ecosystem, combining Keysight's signal generation expertise with NTT's frequency-domain interleaver and Lumentum's photonics capabilities. This positions Keysight's test solutions as foundational to the AI infrastructure development pipeline.
The breakthrough demonstrated by Keysight, NTT and Lumentum addresses a critical pain point in AI data center architecture. Current AI training demands massive data movement between compute nodes, with networking often becoming the performance bottleneck despite advances in GPU capabilities.
By pushing optical transmission to 448 Gbps per lane, this technology directly enables the development of 3.2T interfaces that AI data center operators urgently need. The significance extends beyond raw speed - the emphasis on power efficiency is equally important as energy consumption has become a limiting factor in AI data center scaling.
This development has direct implications for AI workload efficiency. High-bandwidth, low-latency connections between compute nodes translate to faster training cycles, more complex models, and better resource utilization. The ability to achieve these speeds with established PAM4 modulation (rather than more complex alternatives) suggests a pragmatic path to implementation.
From an infrastructure perspective, this represents a critical enabling technology rather than an incremental improvement. Current AI systems are increasingly bottlenecked by network capacity between compute nodes, and solutions that double data rates while maintaining power efficiency directly address scaling limitations facing hyperscalers and AI-focused enterprises. By demonstrating their testing equipment's capabilities in this context, Keysight solidifies its position as a key infrastructure enabler in the AI ecosystem.
- Demonstration at OFC 2025 paves the way for next-generation 3.2T optical interfaces
- Optimized for AI and ML applications requiring ultra-fast data processing
- Breakthrough in data center scalability, energy efficiency, and high-speed networking
- Enables development of power-efficient 3.2T interfaces for data center networks
Applications beyond 128 GBaud demand a new class of generators that simultaneously provide high-speed, precision, and flexibility. Keysight addressed these challenges with the M8199B Arbitrary Waveform Generator, which offers a high-performing signal source for arbitrary signals with a sampling rate up to 256 GSa/s and analog bandwidth exceeding 80 GHz.
Keysight is enabling the industry in the early R&D stage for 448 Gbps. During this early R&D innovation phase, experts explore various modulation schemes, including PAM4, PAM6, and PAM8. Notably, for 224 Gbps optical transmission, the industry has already embraced PAM4 as the preferred choice, highlighting the industry's commitment to pushing the boundaries of high-speed data transmission and setting new standards for the future.
AI and ML applications require ultra-fast, real-time data processing. The 448 Gbps transmission speed accelerates data movement between compute and network nodes, reducing latency and enhancing AI/ML model efficiency. As these models become increasingly complex, higher data throughput is essential to support scalability without bottlenecks. Additionally, this breakthrough improves data center efficiency, lowering operational costs and minimizing environmental impact.
The demonstration utilizes two Keysight M8199B Arbitrary Waveform Generators with NTT’s advanced frequency-domain interleaver to generate 448 Gbps electrical signals with 224 Gbaud PAM4. This signal is used to drive a Lumentum indium phosphide (InP) externally-modulated laser (EML), showcasing the potential for high-speed, power-efficient optical interconnects. The successful generation of 240 Gbaud PAM4 was also demonstrated using the same hardware.
The demonstration features the latest 224 GBaud and beyond PAM4 technology, which enables 448 Gbps per lane data transmission and paves the way for developing power-efficient 3.2T interfaces for data center networks (DCN). This achievement represents a significant leap forward in achieving higher data rates and improved signal integrity.
The joint demonstration consists of:
- Keysight’s M8199B Arbitrary Waveform Generator, the industry’s fastest AWG, operating at 256 GSa/s with analog bandwidth exceeding 80 GHz.
- Keysight’s N1032A DCA-X Sampling Oscilloscope, ideal for analyzing high baud rate optical signals with up to 120 GHz optical bandwidth.
- NTT’s frequency-domain interleaver, available as Keysight M8159A, which extends the bandwidth of the M8199B AWG.
- Lumentum’s high-bandwidth InP externally-modulated laser (EML).
Dr. Akimasa Kaneko, Executive Vice President of Photonic Component Business Group at NTT Innovative Devices, said: “We see this collaboration between the three companies as an important step in further evolving next-generation high-speed optical communications and the AI infrastructure. We are confident that we have prepared the fundamental technologies necessary to realize 400G/lane in a timely manner, and we hope that this will help further develop this industry.”
Dr. Matthew Sysak, Chief Technology Officer, Cloud and Networking Platform at Lumentum, said: “Achieving 448 Gbps transmission is a significant milestone in advancing optical interconnects for AI-driven cloud infrastructure. This collaboration underscores Lumentum’s expertise in photonics and our commitment to delivering cutting-edge optical components that support the rapid expansion of AI and cloud data centers. As AI and ML applications require real-time processing of ever-growing datasets, our high-performance externally modulated lasers will be instrumental in enabling faster, more efficient, and scalable data center networks.”
Dr. Joachim Peerlings, Vice President of Network and Data Center Solutions at Keysight Technologies, said: “This collaboration showcases the cutting-edge advancements in high-speed optical communication and highlights the combined strengths of Keysight, NTT Innovative Devices, and Lumentum. This demo is another milestone for Keysight to enable the industry in advancing the AI infrastructure, laying the foundation for future generations to innovate in new and transformative ways.”
The Keysight M8199B Arbitrary Waveform Generator and Keysight N1032A/B DCA-X Sampling Oscilloscopes are part of the Keysight Artificial Intelligence (KAI) architecture, a portfolio of end-to-end solutions designed to help customers scale artificial intelligence (AI) processing capacity in data centers.
The 448 Gbps joint demonstration will be showcased for the first time at booth #1301 during OFC 2025, April 1-3, at the Moscone Center in
About Keysight Technologies
At Keysight (NYSE: KEYS), we inspire and empower innovators to bring world-changing technologies to life. As an S&P 500 company, we’re delivering market-leading design, emulation, and test solutions to help engineers develop and deploy faster, with less risk, throughout the entire product lifecycle. We’re a global innovation partner enabling customers in communications, industrial automation, aerospace and defense, automotive, semiconductor, and general electronics markets to accelerate innovation to connect and secure the world. Learn more at Keysight Newsroom and www.keysight.com.
View source version on businesswire.com: https://www.businesswire.com/news/home/20250402735253/en/
Keysight Media Contacts
Andrea Mueller
andrea.mueller@keysight.com
Fusako Dohi
+81 42 660-2162
fusako_dohi@keysight.com
Jenny Gallacher
+44 (0) 7800 737 982
Source: Keysight Technologies, Inc.
FAQ
What is the significance of KEYS's 448 Gbps data transmission achievement for AI data centers?
What technology components are used in KEYS's 448 Gbps demonstration?
When and where will KEYS showcase the 448 Gbps demonstration?
How does KEYS's M8199B Arbitrary Waveform Generator perform in the demonstration?
