Alliance Fiber Optic Products, Inc. designs, manufactures, and markets various fiber optic components and integrated modules for communications equipment manufacturers and service providers in the United States, North America, Europe, and Asia. It offers connectivity products, including connectivity modules; optical connectors, adapters, and cable assemblies; fused and planar fiber optical splitters and couplers; optical tap couplers and ultra low polarization dependent loss tap couplers; amplifier wave division multiplexers (WDM) couplers; optical fixed attenuators; fused fiber WDM couplers; and fiber array units. The company also provides optical passive products comprising filter WDMs, dense wave division multiplexers (DWDMs), coarse wavelength division multiplexers, compact coarse wavelength division multiplexers, add/drop DWDM filters, optical isolators, optical bypass switches, and automatic variable optical attenuators. Alliance Fiber Optic Products, Inc. was founded in 1995 and is headquartered in Sunnyvale, California. As of June 3, 2016, Alliance Fiber Optic Products Inc. operates as a subsidiary of Corning Incorporated.