Fiber couplers, inline photodiodes, WDMs, combiners, circulators, and optical switches provide fundamental building blocks for fiber-based optical circuits. Thorlabs offers a wide variety of collimation and coupling components that can be used to effectively collimate or couple light out of and into FC/PC, FC/APC, or SMA terminated fiber. Single Mode Couplers & Combiners, All Band; 1260 to 1620 nm; Coupling Ratio 1/99 to 50/50; Directivity ≥55 dB; Fiber Type SMF-28e, others LightComm Technology builds its ABC all band coupler series using a special technique. The main functionality is to provide a coupling between electro-optical components (e. Choose from racks, panels, modules, splice trays, ethernet fiber switches and other structured cabling components.