Finisar Corp. - Provides fiber optic solutions for the fiber channel, gigabit ethernet and CATV markets. Oplink Communications, Inc - Provides custom design and manufacturing services for optical components. OptoIC Technology, Inc - Produces single and parallel optical transceivers ranging from 155 Mbps to 10 Gbps. Coretek Opto Corp - Produces optical modules as well as fixed and pluggable optical transceivers. OPTICAL ZONU Inc. - Produces active and passive fiber optical modules, especially for PON and FDDx applications. Heraeus Group - Manufacturers of IR and UV light sources, such as custom built deuterium lamps, for scientific and industrial applications. Range, specifications and availability worldwide from Hanau, Germany.