Fiber optic splitter, also referred to as optical splitter, fiber splitter or beam splitter, is an integrated waveguide optical power distribution device that can split an incident light beam into two or more light beams, and vice versa, containing multiple input and output ends. It can divide the input optical signal into multiple output optical signals to meet the fiber optic access needs of multiple terminal devices. Think of it as a prism for modern-day fiber optic communications – directing the light in multiple directions, but without. Understanding Fiber Optic Splitters: Principles, Parameters, Types, Applications, and Future Trends 1.