基于OptiSystem的相干光OFDM系统的仿真研究

摘要

根据相干光OFDM(CO-OFDM)传输系统的理论模型,利用OptiSystem软件,仿真了CO-OFDM系统,对电光调制和光电检测模块进行了深入的讨论,并对不同调制方式和不同子载波下的系统进行了详细的比较.通过仿真结果可以看出,CO-OFDM系统有较强的抗色散能力和较高的频带利用率.%The Coherent Optical Orthogonal Frequency Division Multiplexing (CO-OFDM) system is simulated using OptiSystem software in the paper. The electro-optic modulation and photoelectric detection in CO-OFDM are studied. The performance of CO-OFDM system with different modulation mode and different number of sub-carrier are compared. The simulation results show that the CO-OFDM system has good anti-dispersion ability and higher bandwidth efficiency.