(OPTICAL BACKHAUL NETWORK FOR WIRELESS BROADBAND SERVICE

摘要

PURPOSE: An optical backhaul network for a wireless broadband service is provided to transmit a downlink optical signal of single mode and transmit a wave-multiplexed uplink optical signal, thereby efficiently connecting one center with access points. CONSTITUTION: A plurality of subscriber side ONU(Optical Network Unit)s(400-1~400-M) outputs upward optical signals which are wave-multiplexed. An OLT(Optical Line Terminal)(200) outputs a downward optical signal of single mode. A plurality of remote nodes(300-1~300-K) outputs part of the downward optical signal to a subscriber side ONU.