In the CO or head end, the OLT (optical line terminal) has a port that connects to a single fiber, transmitting data bidirectionally at different wavelengths to a splitter which connects to the ONT (optical network terminal) at multiple subscribers. A splitter is not a filter like a wavelength division multiplexer (WDM). Rarely, there can be two inputs to provide potential redundancy of route. Light power goes in and light power coming out of the various legs is reduced in. In the backbone of modern Fiber-to-the-Home (FTTH) networks, optical splitters serve as the unsung heroes that enable cost-efficient connectivity for millions of subscribers. By dividing a single optical signal from a central Optical Line Terminal (OLT) into multiple outputs for Optical Network. Optical splitters play a crucial role in Fiber to the Home (FTTH) Passive Optical Network (PON) systems, efficiently distributing a single optical signal to multiple destinations. One component makes PON deployment scalable and efficient: the fiber optic splitter.
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