Abstract
Optical orthogonal frequency division multiplexing (OOFDM) has been shown to be able to resist channel dispersion (CD) and polarization mode dispersion (PMD) and it is considered as a promising long distance optical transmission technology. Direct detection optical OFDM (DDO-OFDM) system is a low-cost system and insensitivity to laser phase noise. In this paper, Optisystem and MATLAB are used to jointly build a DDO-OFDM system, and the transmission performance of CO-OFDM based on M-QAM is studied. Through the simulation, we find that in M-QAM-OOFDM system, with the increase of M, the signal is more sensitive to noise, so in general, we use 16QAM to realize signal transmission.
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