| 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). |