Passive Optical Splitters are, quite simply, the components that split the fiber and its signal. A signal from the Aggregation Switch is sent along a run of fiber. The splitter is one of the important. The innovation of Passive Optical Networking, allows us to use these splitters when designing flexible and expandable network topologies, creating fault-tolerant networks, and making efficient use of fiber. Among the most unique features of Optigo Connect are our Passive Optical Splitters. A splitter is not a filter like a wavelength division multiplexer (WDM). Light power goes in and light power coming out. Passive optical networking (PON), like active optical networking, uses fiber-optic cabling to provide Ethernet connectivity from a main data source to endpoints.