Discover 250 Fiber Optic Couplers manufacturers and distributors on GlobalSpec. Find products, technical articles, videos, and more. PM fiber components; patch cords, splitters/combiners, polarizers, isolators, fused/PLCS couplers, test equipment; PER meter, polarized sources, PDL emulators, polarization. This section provides an overview for fiber couplers as well as their applications and principles. We offer a full line of fiber optic couplers and splitters supporting SM, MM, PM, large core, and double-clad fibers across 300–2000 nm, with power handling up to 100 W and operating temperatures up to 300°C. ) on DirectIndustry, the industry specialist for your professional purchases.