Fig. 1. (a) Experimental configuration of all-fiber GVLVSs fiber laser; (b) oscilloscope traces of these GVLVSs along the two orthogonal polarization axes; (c) polarization-resolved spectrum of GVLVSs; (d) pulse duration of GVLVSs.

Fig. 2. (a)–(d) Oscilloscope trace and (e)–(h) RF spectrum of the output pulses at different pump power.

Fig. 3. (a) Transmission spectrum of LP₀₁ mode of the TM-LPFG; (b) the surface morphology of TM-LPFG (inset: enlarged part).

Fig. 4. Intensity profiles of ultrafast CVBs based on vector-locked and non-vector-locked solitons. (a) and (f) are radially and azimuthally polarization beams without a polarizer; (b)–(e) and (g)–(j) show the profiles of the output beam after passing through a linear polarizer. Arrow indicates the orientation of the linear polarizer.

Fig. 5. Output power of ultrafast CVBs depends on the incident power of vector and non-vector-locked solitons.

Fig. 6. Time evolution of solitons based on SMS, CNT, and NPR mode-locking in terms of (a), (c), (e) Stokes parameters at the Poincaré sphere and (b), (d), (f) intensities of orthogonally polarized modes.

Fig. 7. Polarization and intensity profiles of ultrafast CVBs: (a) radial polarization TM₀₁, (b) angular polarization TE₀₁.