SEDI-ATI Fibres Optiques is a French company, founded in 1951 near Paris. Since 1972 we manufacture custom-made passive fiber-optic solutions, components, and assemblies, that withstand complex and extreme environments in hostile and hazardous applications. We offer achromatic multimode couplers, multimode wavelength division multiplexers, fiber optic hermetic feedthroughs, bundles and arrays, special patch cords, and medical fiber optic probes.

We mainly address applications in niche markets such as in the oil and gas industry, nuclear power plants, electrical installations, marine industry, or large astronomical instruments. The applications of our products and solutions are as diverse as opto-pyrotechnics, cryogenics, spectroscopy, metrology or power lasers.