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. The optical network system uses an optical signal coupled to the branch distribution. Additionally, beamsplitters can be used in reverse to combine two different beams into a single one. Its primary role is in Passive Optical Networks (PON), which are the foundation of. An Optical Splitter (also known as a fiber optic splitter or beam splitter) is a passive optical power management device. “Passive” means it needs no electricity.