Optical access network system

The present invention relates to a device configured to join the optical access network. Optical network configuration device of the present invention for the downlink signal in the Ethernet-based optical transport network by assigning an Ethernet signal and a separate one wavelength in the broadcast signal haejugo transmitted in the same wavelength for each subscriber, and an Ethernet signal for the uplink signal by transmitting by multiplexing the broadcast signal to each of the specific wavelength per subscriber, the functions of the Ethernet passive shaft of light (E-PON) architecture alignment protocol OLT (Optical Line Terminal) and ONU (Optical Network Unit) without the use of (ranging protocol) in simple and allows you to configure the optical network economically.