Fig. 4: Experimental pulse-driven switching wave and zero-dispersion soliton formation, MR1.
From: Zero dispersion Kerr solitons in optical microresonators
a Setup, featuring the EO-comb as a pulsed-source. MZM: Mach-Zehnder modulator, EOM: electro-optic modulator, EDFA: erbium-doped fiber amplifier, ESA: electronic spectrum analyzer, OSA: optical spectrum analyzer, OSC: oscilloscope. The input pulse train is coupled into and out of the microresonator chip via lensed fibers. Left-inset: Spectrum of the 14 GHz EO-comb before amplification. b Spectrogram of the step feature for different desynchronization about 27.888880 GHz. c Microresonator transmission (with DC value subtracted), with detunings from (f) marked with dashed lines. d Spectrogram of the repetition-rate beatnote during the laser scan in c. e Long-term beatnote measurement of the final comb state. f Stages of comb/spectrum formation in descending order of detuning (40 dB vertical offsets). Red block marks spectral filter for beatnote measurement.
