Fig. 1. Basic structure of equally-spaced triple pulse bound states

Fig. 2. TS-DFT technology. (a) Schematic diagram; (b) time-stretch method based on single-mode fiber; (c) time-stretch method based on chirped Bragg fiber grating

Fig. 3. Multi-pulse separations manipulation based on gain modulation^[28]. (a) All-optical control is experimentally implemented using an AOM in the pump beam; (b) corresponding real-time spectra with applied control signal sketched in green; (c) (d) extended views of exemplary up and down-switching, respectively

Fig. 4. Multi-pulse phase manipulation and encoding based on gain modulation^[24]. (a) Successive spectral evolution based on the quaternary format, example of encoding corresponding to “fiber”; (b) relative phase information by decoding

Fig. 5. Real-time intelligent programmable mode-locked fiber laser^[33]

Fig. 6. Multi-pulse separations manipulation and encoding based on dispersion control^[30]. (a)Schematic of system equipment; (b) mechanism of manipulation; (c) (d) spectral and their first-order autocorrelation results corresponding to different spectral filtering values; (e) pulse spectrum based on quaternary-coding; (f) pulse temporal separations after encoding

Fig. 7. Multi-pulse number manipulation based on optomechanical effects^[36]. (a) Manipulation principle; (b) pulse sequence before erasing; (c) erased pulse sequence; (d) details of the erasing dynamics plotted over 731 cavity round-trips