Partnerships
Polar Light Technologies Signs Foxconn Deal for MicroLED Optical Links
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Polar Light Technologies announced its first cooperation agreement for MicroLED optical interconnects on November 12, 2026, partnering with Foxconn Technology Co., Ltd. on 5-micrometer green light sources for data centers, AI accelerators and high-performance computing.
The work takes technology developed for displays into links where light carries information among computing components and systems. Foxconn Technology chief executive Yen-Jen Pan said the company would explore the MicroLED technology’s potential and support its use in advanced information and communications technology applications.
Polar Light chief executive Oskar Fajerson presented the agreement as an extension of the company’s existing work: “For years, Polar Light has demonstrated the advantages of our MicroLED technology in displays. The same fast, efficient, CMOS-integrated emitters can help AI data centers overcome interconnect limits.”
Inside Polar Light’s Pyramidal MicroLEDs
The devices use hexagonal gallium nitride (GaN) pyramids with indium gallium nitride (InGaN) quantum wells as their active light-emitting region. Polar Light’s technology documentation describes bottom-up growth from the semiconductor wafer, avoiding the top-down etching of a planar stack and the sidewall damage that can impair optoelectronic performance as dimensions shrink.
Polar Light reports a 40% reduction in the piezoelectric effect compared with conventional planar InGaN LEDs, enabling higher data-transfer rates. The pyramid’s base angle produces the reduced field, leading to faster recombination and more photons per unit time, the mechanism behind the bandwidth claim.
Polar Light also lists micrometer and sub-micrometer emitter dimensions for high-density requirements, a Lambertian light lobe for efficient coupling into optical fiber, and proven integration with CMOS backplanes. These features apply to the light-source component that customers would incorporate into an optical system.
Co-Packaged Optics Work Remains in Development
In co-packaged optics (CPO), optical components sit next to the processor package. Polar Light’s optical-interconnect product page identifies MicroLED arrays for co-packaged optics as its focus, aimed at CPO and module manufacturers, while customers build the transceivers and optical systems.
The current offer supports CPO development, with a CPO integration product still on the roadmap. Configurations and specifications are agreed with each customer’s engineering team instead of being fixed in a catalogue. The Foxconn collaboration therefore starts at the emitter and module-development level, with customer-specific integration still to be worked through.
Green MicroLEDs Have Reached Pilot-Line Production
The green devices specified for the collaboration match the first MicroLED product range now being produced through Polar Light’s manufacturing pilot line. A July 30, 2026 announcement said the first pilot run at VTT Technical Research Centre Finland had produced green MicroLEDs, moving the process from laboratory development toward pilot-scale manufacturing.
The next steps identified in July were bonding and integrating the MicroLED frontplane onto a CMOS backplane to create a larger display. Polar Light described the VTT collaboration as support for manufacturing scale-up and engagement with initial customers.
The key question now is whether the emitters’ reported speed and fiber-coupling advantages translate into validated, customer-specific CPO modules. That integration work will determine whether a technology developed for displays can become a practical light source for AI data-center connectivity.
