The Low-Power optical distribution system mainly consists of a Main Unit (MU) and a Remote Unit (RU). The Access Unit can either receive wireless signals from outdoor base stations or directly couple the radio frequency (RF) signals of base stations via a feeder. After the signals undergo digital processing, they are transmitted to the Remote Unit through optical fibers. Additionally, the Access Unit can be directly connected to multiple Remote Units, which is used to quickly address coverage issues in enclosed blind spots or weak coverage areas with low traffic volume. It is a system-level solution designed for scenarios such as underground parking garages, shopping malls, hotels, and similar locations.