Fig. 1. Digital nonlinear compensation scheme for microwave photonic links

Fig. 2. Digital processing flow chart for blind identification and compensation of microwave photonic links

Fig. 3. Experimental diagram of microwave photonic link with digital nonlinear compensation

Fig. 4. Digital nonlinear compensation results of microwave photonic link with 13.8 GHz dual-tone signal input. (a) Spectra of signals before and after digital compensation with single nonlinear fitting; (b) spectra of signals before and after digital compensation with twice nonlinear fitting

Fig. 5. IMD3 of digital nonlinear compensated microwave photonic links at 2.6-16.8 GHz. (a) IMD3 before and after digital nonlinear compensation; (b) IMD3 improvement with digital nonlinear compensation