PON optical port pigtail type is

PON optical ports typically use single-mode fiber with SC/APC or LC/APC connectors for GPON and XGS-PON deployments.Fiber TypePON networks use single-mode optical fiber (SMF) to support long-distance transmission, typically ranging from 20 km to 30 km between the OLT and ONT/ONU . Single-mode fiber ensures minimal signal loss and supports high-speed data rates required for GPON (2.5 Gbps downstream) and XGS-PON (10 Gbps symmetric) networks .Connector TypeThe most common pigtail connectors for PON optical ports are:SC/APC (Angled Physical Contact): Widely used in GPON and XGS-PON OLT and ONT ports due to low back reflection and high return loss, which is critical for PON signal integrity .LC/APC: Increasingly used in modern OLTs and ONTs for compact form factors, especially in high-density patch panels and splitters . The APC (Angled Physical Contact) design is preferred over UPC (Ultra Physical Contact) because the angled end-face reduces back reflection, which is essential in PON networks where a single optical signal is split among multiple users.Pigtail ConfigurationSingle-fiber pigtails are used for each PON port, connecting the OLT to the splitter or directly to the ONT/ONU.Duplex pigtails are less common in PON because downstream and upstream signals share the same fiber using different wavelengths (e.g., 1490 nm downstream, 1310 nm upstream for GPON).SummaryFor standard PON deployments:Fiber: Single-mode (SMF)Connector: SC/APC or LC/APCPigtail type: Single-fiber, pre-terminated with APC connectorsPurpose: Connect OLT ports to splitters or ONTs/ONUs while maintaining low insertion loss and minimal back reflection . This configuration ensures reliable, high-speed, and long-distance optical connectivity in GPON, XGS-PON, and other PON architectures.