DEVICE FOR MEASURING LINE TRANSMISSION CAPACITY IN OPTICAL SUBSCRIBER NETWORK

摘要

PURPOSE: A device for measuring a line transmission capacity in an optical subscriber network is provided to measure a BER(Bit Error Ratio) value from a power value of optical signals. Therefore, it is possible to previously prevent errors, and to secure efficiency and stabilization of a system. CONSTITUTION: An optical signal generator for monitoring(211) generates optical signals for monitoring optical line sections(11-25). A multiplexer/reverse-multiplexor(213) multiplexes the optical signals for monitoring and optical signals for communication transmitted from a central office, and transmits the multiplexed optical signals to a subscriber. The multiplexor/reverse-multiplexor(213) performs a reverse-multiplexing for the optical signals reflected from the subscriber. A reverse-multiplexor(235) separates the optical signals reflected to the subscriber each wavelength. A splitter(236) splits the optical signals transmitted from the reverse-multiplexor(235). A reflected light receiver(237) receives the split optical signals. A BER(Bit Error Ratio) measurer(239) measures a BER value from a power value of the optical signals.