Applied Optoelectronics provides fiber-optic networking products, for four networking end-markets: internet data center, cable television, telecommunications, and fiber-to-the-home. The company designs and manufactures a range of optical communications products at varying levels of integration, from components, subassemblies and modules to complete turn-key equipment. The company's components often incorporate one or more of its optical laser chips inside a precision housing that provides mechanical protection as well as standardized electrical contacts. Other optical components may also include optical filters or other optical elements by which optical signals are routed internally within the component.