实现了光OFDM模块的各个功能，同时仿真分析了OFDM的载波幅度谱、相位谱、每个载波对应的时域信号、整个时域/频域的OFDM、每个接收符号的分布图。计算了相位差-To achieve the various functions of the optical OFDM module, the simulation analysis of the the the OFDM carrier amplitude spectrum and phase spectrum, and the time domain signal corresponding to each carrier, the whole time domain/frequency domain OFDM, each reception symbol maps. Calculated phase difference