Optical components
Newport: General optics
Thorlabs: General optics
Melles Griot: General optics
Linos: Microbench optics
Research electro optics: Etalons, beamplitters, coatings
Omega filters: Many filters
Semrock: Many filters
Anteryon: Aspheric lenses
NSG: Gradient index lenses
Fiber optics
OZ-optics: Fiber optics
Gould Fiber-Optics: Highly specialized in fiber optics
Light sources
Coherent: Laser systems
Nichia: GaN laser diodes
Sacher: ECDL and coated laser diodes
Lumileds: Various LEDs
Santec: Swept lasers
Micron Optics: Swept lasers
Photodetectors
Hamamatsu: PMT detectors
Kyosemi: Photodiode arrays
Optical Equipment
P&P Optica: High performance spectrometers
Woollam: Ellipsometers
Materials
Soitec: Silicon on insulator
Virginia Semiconductors: Silicon wafers, various doping levels
CEDOVA: Photonics processing
MiPlaza: Materials processing
Stratophase: PPLN crystals
Electronics
Knowles acoustics: Various microphones
Senserion: PCB sensors
Services
Sifam: Photonic packaging, modules, and components
Laser components: Photonic product reseller and photonic fabrication
Surface Prep Lab: Wafer polishing, handling
Implant Sciences: Implantation service
Optics Companies
Topcon: OCT equipment
River diagnostics: Raman equipment