SEDI Fibres Optiques offers a unique range of special multimode fiber-optic assemblies for extreme environments: hermetic feedthroughs, spectroscopy bundles arrays and octopus, couplers, WDMs, specialty optical fiber patch cords and connectors, medical probes, and. SEDI Fibres Optiques offers a unique range of special multimode fiber-optic assemblies for extreme environments: hermetic feedthroughs, spectroscopy bundles arrays and octopus, couplers, WDMs, specialty optical fiber patch cords and connectors, medical probes, and. Download product sheets and brochures from SEDI ATI, the fiber-reinforced component specialist. Contact us if you have any questions. SEDI-ATI's Mul�mode High Direc�vity Fiber Op�c Couplers are manufactured using a proprietary process based on a wavefront division technology. This unique manufacturing method intrinsically ensures our couplers are highly mode insensi�ve and achroma�c. Our couplers show a very high stability in. SEDI-ATI's 1×2 achromatic fiber-optic multimode couplers have been designed for applications where wideband and achromaticity are required at an attractive cost. 5/125 fibers, Broad wavelength range, Wavelength insensitive, Stable coupling ratio, Low insertion loss, Low cost. Thorlabs offers a varied selection of single mode (SM), polarization-maintaining (PM), multimode (MM), and double-clad fiber couplers, as well as 1x8 and 1x16 SM PLC splitters; 1x4, 1x8, and 1x16 PM PLC splitters; wideband multimode circulators; RGB combiners; and WDMs. Our SM and double-clad fiber. When used in a round trip configuration, the HD and HDS series are ideal to perform optical metrology and sensing where the dynamic range of the sensor is a key parameter.