Fig. 1. Spectrum of the on-chip SHG conversion efficiency (insets: SEM image of the rib waveguide and the mode fields that satisfy the phase matching)

Fig. 2. Experimental setup of TFLN waveguide measurements

Fig. 3. Measured optical spectrum of DFG based on the MPM (inset: spectrum of the pump light)

Fig. 4. DFG spectra obtained by scanning signal light. (a) Signal light scanning from 1500 nm to 1560 nm; (b) signal light scanning from 1570 nm to 1630 nm

Fig. 5. On-chip conversion efficiency of the DFG