Jun ZHANG, Wenjun RUI, Na Lü. Research on Highly Reliable Transmission based on Delta-sigma Modulation for Power Communication[J]. Study On Optical Communications, 2025, 51(1): 230156-01
- Study On Optical Communications
- Vol. 51, Issue 1, 230156-01 (2025)
Fig. 1. Structure of 3rd-order cascaded resonator feedback Delta-sigma modulator
Fig. 2. Frequency response of the NTF of Delta-sigma modulator with different OSRs
Fig. 3. Experimental setup of unrepeated coherent transmission based on Delta-sigma modulation
Fig. 4. The flowcharts of transmitter and receiver DSP
Fig. 5. Measured optical spectra with different OSRs
Fig. 6. SNR of the QPSK optical waveform as a function of launch power
Fig. 7. SNR of the QPSK optical waveform as a function of unrepeated transmission distance
Fig. 8. Recovered SNR of the original high-order format signal as a function of OSR
Fig. 9. EVM of the high-order format signal as a function of OSR
Fig. 10. Recovered constellations of original signals
Fig. 11. Measured SNR of the QPSK optical waveform as a function of optical SNR at back-to-back scenario
Fig. 12. Measured BER of the QPSK optical waveform as a function of optical SNR at back-to-back scenario
Fig. 13. Measured recovered SNR of the original high-order format signal as a function of optical SNR at back-to-back scenario
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