Fig. 1. Schematic diagram of homodyne coherent microwave photonic link with high dynamic range and long-distance

Fig. 2. Experimental test results before phase-locking. (a) Output power spectra of beat-note signal; (b) waveforms of beat-note signal and control voltage signal

Fig. 3. Experimental test results after phase-locking. (a) Waveforms of beat-note signal and control voltage signal; the output power spectra of the front-end system before (b) and after (c) modulating 0 dBm two-tone signals with the frequencies of 99 MHz and 100 MHz

Fig. 4. FFT power spectra of the system while modulating the 5 dBm two-tone signals with the frequencies of 99 MHz and 100 MHz.(a) Without and (b) with our proposed DSP technique

Fig. 5. Diagram of spurious-free dynamic range of the system before and after DSP. Frequencies of the input two-tone signals are (a) 99 MHz and 100 MHz; (b) 580 kHz and 600 kHz