FormFactor Inc. has acquired Keystone Photonics for an undisclosed amount, integrating Keystone's specialized capabilities into its portfolio. Keystone Photonics is known for its expertise in the additive manufacturing of lensed fiber probes, which are critical for advanced wafer-level testing and achieving improved optical coupling in photonic devices. The acquisition marks a strategic expansion for FormFactor in the rapidly evolving test and measurement sector.
Keystone Photonics develops custom optics and fiber arrays tailored for high-density and precision testing of photonic integrated circuits (PICs, including both die-level and wafer-level applications. Its product range includes innovative solutions such as large working-distance lenses for grating couplers, asymmetric lenses, and 90-degree deflection optics for edge-coupling devices. These specialized probes support challenging test environments, including co-packaged optics (CPO) and cryo applications, essential for emerging technologies in data centers and quantum computing.
This acquisition is strategic for FormFactor, a company established in the semiconductor test and measurement industry. By integrating Keystone Photonics, FormFactor gains advanced micro-optical probing technology that directly addresses the increasing complexity of photonic device testing. The synergy between FormFactor's existing test solutions and Keystone's precision optical probes is expected to provide customers with more comprehensive and integrated solutions for optical I/O and PIC validation. This move reinforces FormFactor's commitment to supporting the development of next-generation optical interconnects and AI hardware.
The combined entity is anticipated to enhance FormFactor's ability to serve the growing demand for scalable and precise optical testing. This integration is designed to accelerate innovation in wafer-level testing, offering advanced capabilities that cater to ultra-low pitch photonic circuits and diverse optical coupling requirements. The acquisition positions FormFactor to deliver a broader range of test solutions, supporting the accelerated development and volume production of advanced photonic devices across various industries.

