EPON (Ethernet Passive Optical Network) supports a maximum split ratio of 1:64, meaning one PON port can serve up to 64 ONUs. By dividing a single optical signal from a central Optical Line Terminal (OLT) into multiple outputs for Optical Network Terminals (ONTs) at users' homes, splitters eliminate the need for dedicated fibers to each residence—slashing infrastructure costs while scaling network reach. This guide. It allows a single input from the OLT to serve multiple endpoints without active electronics. According to the Broadband Forum, PLC splitters are essential for achieving scalable and cost-effective GPON and XGS-PON deployment in access networks. In this guide, you'll learn how fiber splitters. In fiber optic networks, especially in FTTx deployments, the number of Optical Network Units (ONUs) that a single PON port on an Optical Line Terminal (OLT) can support directly affects network planning, cost-efficiency, and service scalability. In this article, we'll explain the concept of split. The optical power budget determines the transmission distance and splitting capability of a PON system, following this relationship: OLT Transmit Power − Splitter Loss − Fiber Loss ≥ ONU Receive Sensitivity · Typical Optical Module Parameters: · EPON: PX20+ module (link loss ≤28dB, supports 1:64. In practice, PONs are typically used for the last mile between Internet service providers (ISP) and their customers. PON architectures use passive splitters to divide optical.