Optical communication systems, optical receiver, optical transponder, wavelength division multiplexing (WDM) optical communication system, wavelength-division-multiplexed optical transponder and wavelength multiplexing receiving apparatus

摘要

In the optical OFDM communication system, I want to reduce the PAPR. The phase-modulated light by the base band OFDM signal which is the output of the transmission signal processing unit 100 provided in the optical transmitter inside, and realized the optical communication as a signal light to the light, and the PAPR at the point light power inside the optical fiber is large low value of 0dB almost can be realized, I can solve the above problems. Is propagated through the optical fiber transmission line is the signal light, it is converted into an electric signal by the optical receiver units 2 through the delay interferometer and the light. Converting each sub-carrier by the FFT signal processing and A / D converter, respectively, installed in the optical receiver inside the electrical signals of the two, it is decoded by subtracting the sub-carriers of the same frequency, to reproduce the data .