Patent ID: 8155529

Claim:
A transmitting and receiving apparatus for optical data communication in an optical OFDM system, the apparatus comprising: a first pulse carver for outputting optical data having a specific optical spectrum and pulse width; a 1:N splitter for splitting the optical data output from the first pulse carver into N optical data; N modulators for modulating the optical data from the 1:N splitter by loading the optical data on subcarriers; an inverse-discrete Fourier transform device for optically performing inverse-discrete Fourier transform on subcarrier optical data from the modulators to produce optical OFDM symbols; a forward discrete Fourier transform device for optically performing discrete Fourier transform on the optical OFDM symbols produced by the inverse-discrete Fourier transform device to demultiplex the symbols; N second pulse carvers for receiving the demultiplexed optical OFDM symbols from the forward discrete Fourier transform device and outputting optical data having a specific optical spectrum and pulse width in parallel; N photodiodes for converting the optical data output in parallel from the second pulse carvers into electric data; and a serializer for receiving the parallel electric data from the photodiodes and converting the parallel electric data into single serial data.