Which device in a passive optical network PON doesn t require electricity

The passive optical splitter in a PON does not require electricity.In a passive optical network, the passive optical splitter is the unpowered component that divides a single optical signal from the service provider into multiple signals for distribution to end users without the need for electrical power or active electronics . It uses optical components such as mirrors and glass to replicate and direct light signals to multiple subscribers, enabling a single fiber from the Optical Line Terminal (OLT) to serve many homes or businesses .Role and FunctionThe splitter is located in the field, often in outdoor cabinets near customer premises. It performs signal distribution passively, meaning it does not amplify or convert the signal electrically. Typical splitter ratios range from 1:2 up to 1:128, allowing one fiber to serve multiple endpoints efficiently .AdvantagesNo electricity required: Reduces operational costs and eliminates the need for power infrastructure in the field .High reliability: Passive components are less susceptible to environmental factors and electromagnetic interference .Cost-effective deployment: Minimizes capital and operational expenditures compared to networks with active devices at every split point .Other PON ComponentsOptical Line Terminal (OLT): Located at the service provider's central office; requires power to manage and transmit signals .Optical Network Terminal (ONT) or Optical Network Unit (ONU): Located at the customer premises; converts optical signals to electrical signals and requires power . In summary, the passive optical splitter is the only device in a PON that operates without electricity, making it a key element in the network's cost efficiency and scalability.