Fig. 3: Phase-independent turnkey Brillouin-DKS generation with deterministic soliton numbers.
From: Turnkey photonic flywheel in a microresonator-filtered laser
a Ten consecutive switching tests. The top panel shows the measured evolution of comb power, while the bottom panel shows the measured electrical spectrum of the soliton repetition rate during the switching process. The EDFA is switched on periodically, as indicated by the shaded regions. b Turnkey success probability by changing fiber cavity length with fine-tuning (top) and coarse-tuning (bottom). Each data point is acquired from 100 switch-on attempts. c Optical spectra of the turnkey SBL solitons. The black dashed lines show the fitted soliton spectral envelope. Left insets are the occurrences of a single soliton (top), two solitons (middle) and three solitons (bottom) among 100 times soliton generation. Right insets are the clean and high-contrast RF beat notes of comb repetition rate.
