Multicolour soliton microcombs generation currently lacks spectral tunability and uses degenerate optical parametric oscillators (OPOs). Here, authors demonstrate the class of hyperparametric solitons in a silicon-nitride microresonator nondegenerate OPO, which is pumped in the C-band and producing a tuneable signal in the O-band.
- Haizhong Weng
- Xinru Ji
- Dmitry V. Skryabin
