Figure 4
From: Ringing phenomenon in chaotic microcavity for high-speed ultra-sensitive sensing

(a) Power spectra of the chaotic (red) and symmetric (blue) WGM microcavities. The mapped RP spectra of the chaotic (red) and the symmetric (blue) WGM microcavities with the chirp rate at 2 MHz/μs (b), 10 MHz/μs (c), and 50 MHz/μs (d).