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. 2018 May 14;9:1869. doi: 10.1038/s41467-018-04350-1

Fig. 2.

Fig. 2

Silicon microresonator-based dual-comb source. a A spectrum of one of the generated combs measured using a Michelson-based Fourier transform infrared spectrometer (M-FT). The spectral range is from 2.6 to 4.1 µm. The resolution is 7 GHz (0.25 cm−1). b RF-noise characterization of the generated comb. The plot shows the reduction in RF amplitude noise corresponding to modelocking