OPTICAL DATA LINK DEVICE AND METHOD FOR FORMING OPTICAL LOOP NETWORK BETWEEN REMOTE TERMINAL AND CENTRAL SYSTEM

摘要

PURPOSE: An optical data link device and a method for forming an optical loop network are provided to reduce the line installation cost by using only one line for transmitting and receiving optical signals having different wavelengths. CONSTITUTION: An optical data link device includes a switching module, a first transceiver diode, and a second transceiver diode. The switching module(31a) provides a data path by performing a switching operation according to connection state between each central system and each remote terminal. The first and the second transceiver diodes(31b,31c) bidirectionally transmit and receive data of transmitting and receiving signals having different wavelengths of different channels to the data path based on the switching state of the switch module.