Research Article
Generation of (3, 1) Vector Signal Based on Probabilistic Shaping Technology without Precoding
Figure 4
PS (3, 1) vector signal system diagram: (a) spectrogram of the PS (3, 1) photonic vector signal with = 0.4 at 12 GHz after MZM; (b) spectrogram of the PS (3, 1) vector signal with = 0.4 after PD.