Finisar Corp is a California-based provider of fiber optical modules and components that are used in data communications and telecommunications. The company's only reportable segment is optical subsystems and components. Optical subsystems consist of transmitters, receivers, transceivers, transponders and active optical cables that provide the fundamental optical-electrical, or optoelectronic, interface for interconnecting the electronic equipment used in building communication networks and others. Optical components consist primarily of packaged lasers, receivers, and photodetectors for data communication and telecommunication applications. Geographically, it derives a majority of revenue from the United States and also has a presence in China, Mexico and Rest of the world.