ALL OPTICAL FORWARD/INVERSE DISCRETE FOURIER TRANSFORM APPARATUS AND METHOD FOR OPTICAL OFDM TRANSMISSION AND TRANSCEIVER HAVING THE SAME

摘要

invention Optical Orthogonal Frequency Division Multiplexing (Orthogonal Frequency Division Multiplexing, hereinafter "OFDM" quot;) communication and all-optical discrete / inverse discrete Fourier transform unit for the method, and relates to a transmitting and receiving apparatus including it, N of sub-carriers for each of the N input signal transmitted from the optical frequency corresponding to the number of sub-carriers, each divided 1: N Splitter; Each 1: the phase shift delay array module for carrying out a phase shift of the divided signal from the N divider; N number N for dividing the signal output from the inverse phase shift delay array module: 1 power coupler; Each N: 1 time delay array module for performing a time delay of the inverse divide OFDM symbols from the light power coupler; And the time delay for station N divided signals output from the array module 1 by a power coupler, omit the electrical wavelength conversion, wavelength conversion step of the electrical wavelength of the light wavelength required by the conventional fast Fourier transform (FFT) to which, an optical electronic device through the OFDM transmission, there is a speed limit or more high-speed optical transmission is possible effects of the optoelectronic device.