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For more than 30 years, Cabling Installation & Maintenance has provided useful, practical information to professionals responsible for the specification, design, installation and management of structured cabling systems serving enterprise, data center and other environments. These professionals are challenged to stay informed of constantly evolving standards, system-design and installation approaches, product and system capabilities, technologies, as well as applications that rely on high-performance structured cabling systems. Our editors synthesize these complex issues into multiple information products. This portfolio of information products provides concrete detail that improves the efficiency of day-to-day operations, and equips cabling professionals with the perspective that enables strategic planning for networks’ optimum long-term performance.

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Keysight and Coherent Revolutionize Data Transfer and Network Efficiency with 200G/lane Multimode VCSEL Technology at OFC 2025

By: via Business Wire
  • Collaboration enables 200G characterization, tuning, and validation of the powerful new VCSEL technology 
  • Increased bandwidth of 200 Gbps/lane doubles data throughput of the current highest speed multimode interconnects
  • More efficient and cost-effective technology compared to single-mode transmission

Keysight Technologies, Inc. (NYSE: KEYS) and Coherent Corp. collaborated on a 200G multimode technology demonstration that will be showcased for the first time at OFC, in San Francisco, California. The 200G per lane vertical-cavity surface-emitting laser (VCSEL) technology provides higher data transfer rates and addresses industry demand for higher bandwidth in data centers. It will enable the industry to deliver AI/ML services while reducing power consumption and capital expense of short-reach data interconnects.

This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20250327976876/en/

The Keysight M8199B 256 GSa/s Arbitrary Waveform Generator offers a high-performance arbitrary signal source, enabling design development at 160 GBaud and above.

The Keysight M8199B 256 GSa/s Arbitrary Waveform Generator offers a high-performance arbitrary signal source, enabling design development at 160 GBaud and above.

AI/ML deployment is driving extreme growth in the amount of data transfer in data centers. The cost of optical interconnects is an ever-growing portion of the Capex of the data center, while the power consumption of the optical interconnects is an ever-growing portion of Opex. 200G multimode VCSELs revolutionize data transfer and network efficiency, offering the following benefits compared to single-mode transmission:

  • Increased Bandwidth: 200 Gbps/lane doubles the data throughput of the current highest speed multimode interconnects.
  • Power Efficiency: Significantly lower power-per-bit relative to single-mode alternatives driving down electrical power operational expense and helping large-scale data centers minimize their environmental impact.
  • Cost Efficiency: Multimode VCSELs are less costly to manufacture than single-mode technologies, providing lower capital outlay for short-reach data links.
  • Compatible Network Architecture: AI pods and clusters require many high-speed, short-reach interconnects to share data amongst GPUs, aligning well with the strength of 200G multimode VCSELs.

The 200G multimode demonstration consists of Keysight’s new wideband multimode sampling oscilloscope technology, Keysight’s M8199B 256 GSa/s Arbitrary Waveform Generator (AWG) and Coherent’s 200G multimode VCSEL. The M8199B AWG drives a 106.25 GBaud PAM4 electrical signal into the Coherent VCSEL, and the PAM4 optical signal output from the VCSEL is measured on wideband multimode scope displaying the eye diagram. The demo showcases the feasibility and capability of Coherent’s new VCSEL technology as well as Keysight’s ability to characterize and validate this technology.

Lee Xu, Executive Vice President and General Manager, Datacom Business Unit at Coherent, said: “Keysight has been a trusted partner and a leader in test instrumentation technology, providing advanced test solutions to us. We rely on Keysight products, such as the M8199B Arbitrary Waveform Generator, to validate our latest transceiver designs. We look forward to continuing our collaboration as we push the boundaries of optical communications with products based on 200G VCSEL, silicon photonics, and Electro-Absorption Modulated Laser (EML).”

Dr. Joachim Peerlings, Vice President and General Manager of Keysight’s Network and Data Center Solutions Group, said: “We are pleased with the progress the industry is making in bringing 200G multimode technology to market. Our close collaboration with Coherent enabled another milestone in high-speed connectivity. The industry will benefit from a more efficient and cost-effective technology to address their business-critical AI/ML infrastructure deployment in the data center.”

Join Keysight experts at OFC, April 1-3 in San Francisco, California, at Keysight Booth #1301 for live demos on coherent optical innovations.

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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.

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