Fig. 1. Schematic of the polarization-multiplexed, dual-comb fiber laser.

Fig. 2. (a) Oscilloscope trace, (b) optical spectra, (c) RF spectra, (d) oscilloscope traces of two polarizations, and (e) AC traces, of the dual pulses when the laser operates at the DVS state.

Fig. 3. (a) RF spectra and (b) optical spectra when the repetition rate difference is varied.

Fig. 4. Monitored repetition rates and their difference of the laser output.

Fig. 5. (a) Optical spectra, (b) RF spectra, (c) oscilloscope traces, and (d) AC traces (after compression) of the pulses at the DDVS state.