OPTICAL ZONU Inc.
- Produces active and passive fiber optical modules, especially for PON and FDDx applications.
- http://www.opticalzonu.com/

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.
- http://www.tqs.com/

ExceLight Communications, Inc
- Offers transceivers, transmitters, receivers, lasers, photodiodes, GaAs integrated circuits, and passive components for optical communications.
- http://www.excelight.com/

Fiberxon, Inc
- Manufactures modular optical link interfaces for communication systems.
- http://www.fiberxon.com/

Coretek Opto Corp
- Produces optical modules as well as fixed and pluggable optical transceivers.
- http://www.coretek.com.tw/

Luminent, Inc
- Produces transceivers for the CDWM, long-wavelength, and FTTx (fiber curb, home, and business) markets.
- http://www.luminentinc.com/

OptoIC Technology, Inc
- Produces single and parallel optical transceivers ranging from 155 Mbps to 10 Gbps.
- http://www.optoictech.com/

E2O Communications Inc
- Makes pluggable and fixed transceivers and transponders for rates ranging from 100 Mbps to 10 Gbps.
- http://www.e2oinc.com/

Opnext, Inc
- Develops pluggable and fixed mount transmitters, receivers, transcievers, transponders, and discrete optical modules for rates ranging from 155 Mbps to 10 Gbps.
- http://www.opnext.com/

Oplink Communications, Inc
- Provides custom design and manufacturing services for optical components.
- http://www.oplink.com/

Optical Communication Products, Inc (OCP)
- Manufactures optical transmitters, receivers, transceivers, and transponders.
- http://www.ocp-inc.com/

Xanoptix, Inc
- Manufactures MT-style ferrules, multichannel optics and hybrid ICs (where GaAs or InP is attached to silicon).
- http://www.xanoptix.com/

Stratos Lightwave, Inc.
- Manufactures fiber optic components, including single and parallel transceivers, fiber assemblies, WDM modules.
- http://www.stratoslightwave.com/

Picolight, Inc.
- Makes single and parallel fiberoptic transceivers.
- http://www.picolight.com/

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.
- http://www.coronasys.com/

Finisar Corp.
- Provides fiber optic solutions for the fiber channel, gigabit ethernet and CATV markets.
- http://www.finisar.com/