In a single system, one OLT can support multiple ONUs through a splitter. This article will use the FS OLT3610-08GP4S and the TA1910-4GVC-W ONU as examples to illustrate the connection and configuration process between FS OLT and ONU. This disclosurerelates to the field of optical network technologies, and in particular, to a splitting apparatus, a dual-mode optical network unit (ONU), an optical network system, and a communication method. an optical line terminal(OLT) is connected to a splitter by using a feeder fiber, and an. A GEPON system usually consists of an OLT (Optical Line Terminal) at the service provider's central office and multiple ONU (Optical Network Units) or ONT (Optical Network Terminals) close to the end user as optical splitters. In addition, the transmission between OLT and ONU/ONT adopts an optical. For every 2X increase in split ratio, power is reduced by roughly 3 dB. In most cases, the power out of each leg is equal, but we'll discuss a version where the power coming out is unequal amongst legs. Bandwidth is shared amongst customers in a PON, and the bandwidth received by a customer is not. Optical splitter is one of the most important passive components in optical fiber links and plays an important role in FTTH passive optical networks. It is an optical fiber device with multiple input ends and multiple output ends, especially suitable for connecting the central office and terminal. 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. Traditional GPON networks often employ 1:32 or 1:64 splits.