The 1×4 Singlemode Bare Fiber PLC Splitter is a single-mode fiber optic splitter designed to divide an input optical signal into four separate outputs. Featuring a bare fiber design. FS PLC Fiber Optic Splitters, Bare/Blockless/ABS/LGX Splitter/Rack Mount Types, support 1xN light distribution, with low IL and PDL for high-reliability transmission. This compact yet powerful device allows a single optical input to be split into four separate outputs, making it a vital part of passive optical networks (PONs). In this wholesale guide, we'll walk you through everything you need to know about the 1×4 PLC Splitter with SC/APC connectors—its functions, applications, specifications, and why sourcing from a trusted Chinese manufacturer can give you a significant edge. What is a 1×4 PLC Splitter? A 1×4 PLC.