Fig. 1. ADTS schematic diagram of dierct detection system

Fig. 2. ADTP collected without dispersion with OSNR for 16QAM at 16 dB, 23 dB, and 30 dB, and for 32QAM/64QAM at 21 dB, 28 dB, and 35 dB,respectively

Fig. 3. Schematic diagram of FixMatch method with ADTP as input

Fig. 4. Schematic diagram of CNN architecture used in FixMatch

Fig. 5. Schematic diagram of simulation system^[10]

Fig. 6. Schematic diagram of performance of FixMatch algorithm varies with μ

Fig. 7. Relationship between dispersion and OSNR classification accuracy of different signals under three modulation formats obtained using different models at a data labeling rate of 10%. (a) 16QAM; (b) 32QAM; (c) 64QAM

Fig. 8. Relationship between dispersion and OSNR classification accuracy of different signals under three modulation formats obtained using different models at a data labeling rate of 5%. (a) 16QAM; (b) 32QAM; (c) 64QAM

Fig. 9. MAE monitoring error of 16QAM signal at different dispersion levels when data labeling rate is 5%

Fig. 10. Comparison between FixMatch and CNN at different data labeling rates