A ribbon fusion splicer aligns and fuses all fibers in the ribbon simultaneously. Ribbon splicing is the standard method for high-fiber-count trunk cables, OSP feeder cables, and backbone infrastructure where fiber density is high. The result is a low-loss, high-strength joint that preserves optical performance. Every model, whether single or ribbon, follows this same principle, but the. What Is Ribbon Fiber Optic Cable? An In-Depth Guide A ribbon fiber optic cable is a specialized type of cable where multiple optical fibers (typically ranging from 4 to 24, with 12 being the most common) are laid out in a parallel, flat array.