Ayar Labs›Ayar Labs› offers TeraPHY Optical Engine

Ayar positions TeraPHY against copper backplanes and pluggable optics for dense compute interconnects. Its product page reports lower power and latency with optical reach from packages to distant racks.

The chiplet uses silicon photonics and conventional CMOS manufacturing, with a UCIe electrical interface for package integration. Ayar also reports testing across wafer, package, and thermal conditions for the later eight-terabit version.

A research publication dated February 2020 presented TeraPHY as an electronic-photonic chiplet technology and demonstrated its integration in an Intel FPGA multichip package. That dated introduction supports the Product origin year.

Ayar’s 2025 engineering account describes progression from a two-terabit demonstrator through a four-terabit design to an eight-terabit generation. It reports additional validation and thermal testing as the engine moved toward volume use.

TeraPHY’s deployment depends on package integration and a compatible external laser source; Ayar offers its SuperNova unit for that role. Its UCIe interface and optical ports are intended to extend accelerator links beyond electrical reach.

Ayar lists the detailed roadmap under nondisclosure and labels published specifications preliminary. Buyers evaluating the engine would need to validate those figures in their own package, optical, and thermal design.

TeraPHY is Ayar Labs’ optical input/output chiplet for carrying data between compute packages. It combines electronic and photonic circuitry and uses a standard UCIe interface inside multichip systems.

The current product page lists eight full-duplex optical ports and preliminary bandwidth of up to eight terabits per second. Ayar pairs the engine with its external SuperNova light source or another compatible source for AI scale-up links.