Fused fiber optic couplers, also known as fused biconical taper (FBT) couplers, are widely used for splitting or combining optical signals. They are based on the principle of light propagation in fused fibers and the evanescent field coupling effect. Taper, or tapering, refers to the reduction object size in the shape of cone or conical, like sharp pencil tip. for distributing cable-TV signals. It covers a wide range of fiber optic devices such as optical splitters, optical combiners, and optical couplers. A fiber optic coupler is a device that can distribute the optical signal. Fiber optic couplers are optical devices that connect three or more fiber ends, dividing one input between two or more outputs, or combining two or more inputs into one output.
[PDF Version]