Lumentum Holdings Inc. is a California-based technology company that develops optical and photonic products. Its offerings fall into two main categories: optical components used in telecommunications networking equipment and commercial lasers for manufacturing, inspection, and life sciences laboratory applications. The company operates through two segments, Optical Communications and Commercial Lasers, with most revenue coming from the Optical Communications segment. Lumentum is also expanding into emerging optical applications, including 3D sensing laser diodes for consumer electronics. Its Optical Communications portfolio includes a broad range of components, modules, and subsystems serving carrier network customers across access, metro, long-haul, and submarine applications.