A detailed guide to troubleshooting FTTH installation problems, including no signal, device connectivity issues, slow network speeds, and splitter errors, with easy-to-follow solutions. Optical splitters in the outside plant (OSP) are used mostly in passive optical networks (PONs) for fiber-to-the-user (FTTx) networks, and are often overlooked as failure points. These high-speed, high-capacity communication networks are increasingly replacing copper cables, offering superior performance and. A fiber optic splitter is a passive optical component that divides a single incoming optical signal into two or more outgoing signals, or combines multiple incoming signals into one. It is a crucial component in Passive Optical Networks (PON) and is widely used in telecommunications, CATV (Cable TV), and FTTH.