Fig. 1. Principle of single-side band optical signal modulation in DDMZM approach

Fig. 2. Principle of single-side band optical signal modulation in virtual carrier approach

Fig. 3. Schematic of simulation system

Fig. 4. Influence of CSPR on BER with KK receiver at ROP of 0 dBm. (a) BER as a function of CSPR for DDMZM approach; (b) BER as a function of CSPR at OMI of 0.09 for virtual carrier approach

Fig. 5. Electric drive amplitude comparison under the same OMI and CSPR. (a) Comparison of DDMZM approach and virtual carrier approach when OMI is 0.09 and CSPR is 13.8 dB; (b) comparison of DDMZM approach and virtual carrier approach when OMI is 0.05 and CSPR is 18.9 dB

Fig. 6. BER versus ROP with and without KK algorithm for DDMZM approach with optimal parameters and virtual carrier approach