Single-mode fiber splitter and multi-mode fiber splitter, fiber optic splitter is a fiber optic passive device that splits/combines optical signals, and generally splits or combines optical signals of the same wavelength. Unlike active devices (which require power), splitters operate without electricity, relying solely on the physics of. According to the different modes of transmission, fibre splitter can be divided into single-mode fibre splitter and multi-mode fibre splitter. The MPO-12 variant houses 12 fibers (typically arranged in a single row) and is widely used in parallel optical communication. They're capable of operating over a broad wavelength range from 650 nm to 1350nm (Typ.