WDM-TDM hybride optical network and self defection method of optical channel problem thereof

摘要

the present invention is a time division multiplexing passive optical network (TDM-PON, time division multiplexing-passive optical network) the Wavelength division multiplexing (WDM, wavelength division multiplexing) relates to the cross-channel interference to a technique for self-test between the WDM-TDM techniques in combination with each WDM optical transmitter of an OLT and WDM-TDM conversion device in the composite optical network (TRx). ; This composite WDM-TDM optical network according to the present invention, including M number of OLT 1WDM optical transceiver for generating a WDM downstream optical signal, (optical line terminal); And a WDM-TDM conversion device comprising an optical TDM-WDM optical transceiver for converting the down signal to the first optical transceiver and the downstream 2WDM electrical signal by down-converting an electric signal to the TDM downlink optical signal and generates a random pattern and, WDM-TDM conversion device control unit for transmitting it to the optical transmitter of an OLT using a 1WDM 2WDM the optical transceiver; And the pattern includes an OLT control unit to transmit it back to normal if the 2WDM optical transceiver checks the pattern is passed through the first optical transceiver 1WDM, the WDM-TDM conversion device control unit is the first optical transceiver 1WDM The first pattern 2WDM returned to the optical transceiver by that judgment and that a characteristic configuration of the transmitting device to the receiving device failure or 1WDM optical transceiver optical transceiver of this Article 2WDM If abnormal.