Fig. 4: Adapted poling DFG bandwidth measurement.
From: Integrated broadband and high-efficiency difference frequency generation
a,b Measured on-chip power of signal and idler waves with (a) and without (b) EDFA at different wavelengths in the DFG process. c Measured absolute CE at different signal wavelengths in the DFG process. d Measured normalized CE at different signal wavelengths in the DFG process.
