New analyzer accelerates design and validation of 1.6/3.2 Tb/s optical transmitter and receiver components to advance next-generation high-speed optical interconnects

Keysight Technologies, Inc. (NYSE: KEYS) introduced the N4378A Lightwave Component Analyzer (LCA), delivering fully calibrated S-parameter measurements up to 220 GHz to help engineers overcome the growing test challenges of next‑generation optical components used in artificial intelligence (AI) and data center applications.

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The Keysight N4378A 220 GHz Lightwave Component Analyzer enables the PNA/PNA-X Vector Network Analyzer to characterize optical transceiver components for 1.6T and beyond.

Driven by AI and machine learning workloads, data center networks are rapidly transitioning to higher data rates, requiring precise characterization of electro‑optical (E‑O) and opto‑electronic (O‑E) components at ever‑higher frequencies. Designed to integrate with Keysight’s PNA-X Vector Network Analyzer and frequency extenders, the N4378A LCA provides a scalable platform that enables single-sweep, broadband measurements up to 220 GHz at 1310 nm and 1550 nm wavelengths.

The N4378A LCA is supported by enhanced software that simplifies setup and improves measurement confidence. Advanced user guidance and analysis capabilities help engineers validate performance, reduce design risk, and accelerate product development.

Key benefits of the Lightwave Component Analyzer include:

• Enables single-sweep characterization up to 220 GHz, providing deeper insight into photodetectors and optical modulators.
• Supports O-band data center interconnects and C/L‑band terrestrial and submarine applications with a single instrument.
• Validates next-generation dual‑drive optical modulators using differential measurement capability.
• Protects sensitive 0.5 mm coaxial connections and enables safe repositioning between calibration and measurement with a quick-release mechanical fixture.

With the introduction of the N4378A Lightwave Component Analyzer, Keysight is helping shape the future of high‑speed optical innovation. Keysight collaborated with leading industry partners for RF probes, coaxial adapters, and test cables for the 0.5 mm coaxial ecosystem to deliver complete measurement capabilities.

Dr. Joachim Peerlings, Vice President of Network and Data Center Solutions at Keysight, said: “With the introduction of Keysight’s 220 GHz Lightwave Component Analyzer, we are enabling the industry to validate transceiver component designs for next-generation optical interconnects. By combining industry-leading optical bandwidth with wideband wavelength coverage and a robust 0.5 mm coaxial ecosystem, engineers can correlate simulation with real-world measurements and accelerate time-to-market.”

As AI and cloud architectures continue to push the limits of bandwidth and complexity, Keysight’s advanced photonics test solutions empower engineers to explore new design frontiers and deliver the optical interconnects that will define the next era of data center performance.

Keysight will demonstrate the new Lightwave Component Analyzer for the first time at OFC 2026, March 17-19, 2026 in Los Angeles.

Resources

• Technical Overview: 220 GHz Lightwave Component Analyzer
• Product Page: N4378A Lightwave Component Analyzer
• Product Page: NA5305A Frequency Extender up to 170 GHz
• Product Page: NA5307A Frequency Extender up to 250 GHz

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 life cycle. 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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