You are right Tradero. I guess the foundry behind all this is Globalfoundries… As posted couple of days ago: https://www.eetimes.com/ayar-labs-partners-with-nvidia-for-optical-i-o-chiplets/ >>> Ayar’s technology is built to address these issues. The company fabricates its optical I/O chiplets at GlobalFoundries and ships known good die to customers, where they are flip–chip assembled next to a host SoC on a module, enabled by modern chiplet interposer technology. Ayar’s TeraPHY chiplets take care of electrical to optical conversion, so that data can travel between chips using optical fibers.