SYSTEM FOR TRANSFERRING SIGNALS IN AN ETHERNET-BASED OPTICAL SUBSCRIBER NETWORK, ESPECIALLY CONCERNED WITH ADDING A BROADCASTING CHANNEL TO AN OPTICAL ETHERNET NETWORK IN ORDER TO TRANSFER BROADCASTING A MOVING PICTURE SIGNAL AND A COMMUNICATION SIGNAL THROUGH THE OPTICAL ETHERNET NETWORK AT THE SAME TIME

摘要

PURPOSE: A system for transferring signals in an ethernet-based optical subscriber network is provided to transmit a large capacity broadcasting signal through an ethernet-based optical subscriber network using some wavelength combiners and a power distributor. CONSTITUTION: In case that a CO(Central Office)(A) transfers an optical communication signal and an optical broadcasting signal to a subscriber through an optical fiber, the optical communication signal is transmitted to an Ethernet switch(12) and the optical broadcasting signal is transmitted to a wavelength combiner(14). The wavelength combiner(14) combines the optical communication signal and the optical broadcasting signal and outputs the wavelength-combined signal to the optical fiber. As a wavelength combiner(22) in a remote node unit(B) executes wavelength separation for the wavelength-combined signal transmitted through the optical fiber, the optical communication signal is outputted to an Ethernet switch(24) and the optical broadcasting signal is outputted to a power distributor(26).