FAU (Fiber Array Unit) multifiber assemblies offer high-density, high bandwidth solutions for the new era of fiber optic applications, including telecommunications, data centers, silicon photonics, defense and medical applications. Phillips Medisize, a Molex company, offers optical assemblies and arrays with extremely tight tolerance one-dimensional (V-Grooves) and two-dimensional arrays using patented manufacturing techniques. Array options range from a few fibers to thousands of fibers depending on the application. We have. Corning fiber array units (FAUs) are engineered for long‑haul, metro, and data center applications, delivering ultra‑precise fiber alignment with low insertion loss and high optical return loss.