Big Bear Networks: Makes transponders which use digital signal processing (DSP) to automatically correct for fiber impairments.
Coretek Opto Corp: Produces optical modules as well as fixed and pluggable optical transceivers.
Corona Optical Systems, Inc.: Manufactures a pair of small, 12 port, 850nm transmitters and receivers for data rates up to 3.35 Gbps per channel.
E2O Communications Inc: Makes pluggable and fixed transceivers and transponders for rates ranging from 100 Mbps to 10 Gbps.
ExceLight Communications, Inc: Offers transceivers, transmitters, receivers, lasers, photodiodes, GaAs integrated circuits, and passive components for optical communications.
Fiberxon, Inc: Manufactures modular optical link interfaces for communication systems.
Finisar Corp.: Provides fiber optic solutions for the fiber channel, gigabit ethernet and CATV markets.
Luminent, Inc: Produces transceivers for the CDWM, long-wavelength, and FTTx (fiber curb, home, and business) markets.
Oplink Communications, Inc: Provides custom design and manufacturing services for optical components.
Opnext, Inc: Develops pluggable and fixed mount transmitters, receivers, transcievers, transponders, and discrete optical modules for rates ranging from 155 Mbps to 10 Gbps.
Optical Communication Products, Inc (OCP): Manufactures optical transmitters, receivers, transceivers, and transponders.
OPTICAL ZONU Inc.: Produces active and passive fiber optical modules, especially for PON and FDDx applications.
OptoIC Technology, Inc: Produces single and parallel optical transceivers ranging from 155 Mbps to 10 Gbps.
Picolight, Inc.: Makes single and parallel fiberoptic transceivers.
SK Opto Electronics Inc: South Korean based maker of optoelectronic chips and transceivers.
Stratos Lightwave, Inc.: Manufactures fiber optic components, including single and parallel transceivers, fiber assemblies, WDM modules.
TriQuint Semiconductor, Inc.: Develops optical modules as well as custom and off-the-shelf optical components, including EML (Electro-absorptive Modulated Laser), DFB (Distributed Feedback) and FP (Fabry-Perot) lasers and APD / PIN detectors.
Xanoptix, Inc: Manufactures MT-style ferrules, multichannel optics and hybrid ICs (where GaAs or InP is attached to silicon).