Fig. 2: Experiment results of synchronized dual-wavelength mode-locked solitons.
From: Synchronized multi-wavelength soliton fiber laser via intracavity group delay modulation
a Spectrum of pulses, filtering and group delay imparted by the PPS. The imparted group delay difference between two spectra is 3.25 ps, for partially compensating that induced by the intrinsic dispersion of PPS and cavity. b Pulse train and radio frequency spectrum of the wavepacket. c Measured (upper panel) and retrieved (lower panel) FROG spectrograms. d Retrieved pulse profile. e Autocorrelation (AC) trace and the Sech2 fitting. f Frequency difference and sub-pulse separation versus imparted GDD.
