In most cases, downstream signals are broadcast to all premises sharing multiple fibers. A passive optical network is a form of fiber-optic access network. A PON reduces the amount of fiber and central office equipment required compared with point-to-point architectures. passive optical networkĪ passive optical network consists of an optical line terminal (OLT) at the service provider's central office (hub), passive (non-power-consuming) optical splitters, and a number of optical network units (ONUs) or optical network terminals (ONTs), which are near end users.
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