| 摘要 |
A passive optical network (100) with immediate fault protection comprises an optical line termination (OLT) (11), an optical distribution network communicating with the OLT (11), the optical distribution network comprising a splitter (13) connected to the OLT (11) through a feed fiber (15) for separating and distributing optical signals from the OLT (11), a plurality of optical network units (ONUs) (17) each connected to the splitter (13) through a distribution fiber (19), and characterized in that each ONU (17) is equipped with a wireless router (21) communicating with its adjacent wireless routers (21) to form a mesh-like wireless network, whereby when failure has occurred in any distribution fiber (19) connected to the ONUs (17), the wireless router (21) of the disabled ONU (17) connected to the fiber (19) automatically searches and receives bandwidth from the nearest wireless router (21) of the ONU (17) connected to the functioning fiber (19) or wireless router (21) of disabled ONU (17) through the mesh-like network to avoid connection failure of the ONU (17) to the OLT (11). |
