➀ Lightmatter developed a 16-wavelength DWDM optical link on a single strand of standard single-mode fiber, enhancing data center bandwidth and scalability for trillion-parameter AI models;

➁ The technology overcomes challenges like wavelength-dependent propagation, thermal drift (via a digital stabilization system), and polarization sensitivity, enabling cost-effective SM fiber use;

➂ Lightmatter raised $850 million, including a $400M Series D round at a $4.4B valuation, reflecting confidence in its photonic computing innovations.