After data/light in the cable leaves the OLT, it travels to a beam splitter located closer to subscribers. Using passive technology, the splitter replicates the light wavelengths and directs them to an optical network unit (ONU) or an optical network terminal (ONT) closer to the. In basic terms, optical splitters are simple passive devices that split incoming light signals into multiple signals. No power needed, just precision waveguides or fused fiber structures. Thus, people are more. Optical splitters are the key passive component that enables “sharing” of OLT resources: Cost Efficiency: A single OLT port can serve 8–64 ONTs via a splitter, reducing the number of OLTs, fibers, and deployment labor needed.
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