Lumentum Holdings Inc. manufactures and sells optical and photonic products for optical networking and commercial laser customers worldwide. It operates in two segments, Optical Communications and Commercial Lasers. The Optical Communications segment offers components, modules, and subsystems that enable the transmission and transport of video, audio, and text data over high-capacity fiber optic cables. It offers optical communication products, including optical transceivers, optical transponders, and supporting components, such as modulators and source lasers; modules or sub-systems containing optical amplifiers, reconfigurable optical add/drop multiplexers or wavelength selective switches, optical channel monitors, and supporting components; and products for 3-D sensing applications, including a light source product. This segment serves customers in telecom and datacom markets. The Commercial Lasers segment offers diode, direct-diode, diode-pumped solid-state, fiber, and gas lasers; and photonic power products, such as fiber optic-based systems for delivering and measuring electrical power. This segment serves customers in markets and applications, such as manufacturing, biotechnology, graphics and imaging, remote sensing, and precision machining such as drilling in printed circuit boards, wafer singulation, and solar cell scribing.