Fig. 5: Frequency comb spectra with distinctive patterns of intensity variations in the comb lines.
From: Efficient Kerr soliton comb generation in micro-resonator with interferometric back-coupling
a, b OFC generated in the chip with wire bonding, featuring a transition spectrum between PSC and MI. c–g, i, j Soliton crystals with defect obtained with resonator A (c) and resonator B (d–g, i, j). The spectrum in h was obtained for a pump power of 300 mW from the same set of measurements as in Fig. 2, and exhibits a strong enhancement of the comb lines. k The effective pump detuning measurement corresponding to the spectrum in a. l–n Repetition rate signals of h, f, g, respectively. i, j Ikeda map simulations of soliton crystal with defects, where the temporal profiles for the ring (blue), feedback (green), and output (red) are shown in the upper panel. The simulated (middle panel) and experimental (bottom panel) comb spectra exhibit a very good agreement.
