Applied Optoelectronics, Inc. (AOI) is a company that designs and manufactures fiber optic networking products. It offers advanced optical devices, packaged optical components, optical subsystems, laser transmitters, fiber optic transceivers, diode lasers, photodiodes, and related modules and equipment. The company serves internet data centers, cable television broadband (CATV), fiber-to-the-home (FTTH), and telecommunications markets.