Figure 1
From: Smooth and flat phase-locked Kerr frequency comb generation by higher order mode suppression
Kerr frequency comb from a multi-mode microresonator.
(a) Cold cavity transmission of a multi-mode microresonator. The waveguide cross-section is uniform at 2 × 0.8 μm2 along the whole microresonator. Five modal families (3 TE and 2 TM) are identified and mode hybridization between the first two TE modes leads to periodic disruptions in dispersion and quality factor (red arrows). Inset: Zoom-in view of the cavity resonances around 1588.6 nm. (b) Example Kerr frequency comb spectrum, showing a periodic amplitude modulation in its spectral shape due to the mode hybridization.
