Optical circuit for implementing a node of higher degree in an optical transmission network

摘要

The structure has optical drop channel medium, optical add and cross connect medium, which has exclusive optical splitter unit (102,110), optical demultiplex and optical add unit (7). An optical add unit has the optical wave length multiplex unit connected with an input port for a wave length multiplex signal and wave length multiplex unit connected with an output port for a wave length multiplex signal. One or more part transmit multiplex signal are produced for the certain remote port according to the one or many following possibilities depending on the number of cross connect wave length multiplex signal. Multiple part transmit wavelength multiplex signal medium of an optical splitter unit are combined to the conducted transmit wave length multiplex signal of the determined remote port.