What Is Keysight Technologies (KEYS) Really Gaining From Its Photonics Design Milestone?

• Keysight Technologies (NYSE: KEYS) received certification for its ADS Photonic Designer with Tower Semiconductor’s PH18 silicon photonics PDK.
• The certified PH18 process design kit lets engineers design electronic and photonic integrated circuits within a single ADS simulation environment.
• Tower Semiconductor’s PH18 silicon photonics platform targets high speed data communication, AI, and data center applications using integrated photonics.
• The ADS Photonic Designer and PH18 PDK certification is only one piece of the Keysight story, which runs significantly deeper for investors. Take a look at 1 warning sign we have identified for Keysight Technologies.

For readers tracking how silicon photonics and AI hardware are reshaping data movement, it is worth comparing this news with the broader set of infrastructure stocks in 53 AI infrastructure stocks.

Keysight Technologies builds electronic design and test tools that support much of the hardware used in modern communication and compute systems. Its work on ADS Photonic Designer connects directly to how chipmakers and system vendors prototype and verify complex photonic circuits before those designs ever reach the lab.

4 things going right for Keysight Technologies that this headline doesn't cover.

Why does Tower’s PH18 certification inside Keysight ADS Photonic Designer matter?

Putting Tower’s PH18 silicon photonics PDK inside ADS Photonic Designer lets engineers handle electronic and photonic circuits in one schematic, one simulation flow, and one layout. That cuts down on tool handoffs and model mismatches. For Keysight Technologies, it ties photonics work directly into an environment many RF and high speed design teams already use.

Does this change the Keysight Technologies Narrative investors have been using?

This update lines up with the Narrative that Keysight Technologies is leaning harder into software, simulation and emulation, not just selling instruments. Photonic Designer inside ADS supports that mix shift toward higher margin design tools, alongside the broader push that already has software and services at roughly 33% of Q3 2026 revenue and annual recurring revenue at 24% of the mix.

See how these catalysts shape Keysight Technologies' path to a $415 fair value.

What should you watch next to see if this photonics push pays off?

The clearest reference point is how management talks about simulation and software traction in upcoming earnings, including progress toward the simulation business crossing US$0.5b in 2026. Any detail on customer uptake of the PH18 photonics PDK inside ADS, and how often it is bundled with broader AI data center or high speed interconnect projects, will be important signals.

One big Keysight Technologies question this article has not touched yet

Hardware tools and photonics projects tell only part of the story. The longer term projections for where this business could land a few years from now point in a very different direction. See where analysts expect Keysight Technologies to be in a few years.

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