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Carrier phase and amplitude manipulation is an important signal processing method in microwave photonics. The authors proposed a series of work by realizing such manipulation with a single drive dual-parallel Mach-Zehnder modulator (DPMZM). By controlling the phase of the optical carrier, dispersion compensation can be achieved, while the amplitude tuning of the optical carrier can decrease the nonlinear distortions and improve the linearity. This manipulation method can also help establishing a millimeter-wave photonic up-converter, a frequency doubled opto-electronic oscillator, or a low-interference dual-direction radio-over-fiber (RoF) links. [ABSTRACT FROM AUTHOR]

The main-to-sidelobe suppression ratio (MSSR) is significant to filters. The tap weight errors worsen the MSSR of the finite impulse response (FIR) microwave photonic filters (MPFs). The MSSR can be improved by shaping the multicarrier optical source spectra with high precision. By compensating the errors with an iteration method, the sidelobes of the amplitude response can be optimized to increase the MSSR. Such a method is simple, effective, and compatible with all FIR MPF approaches. In the experiment, optical spectra of Gaussian profiles were taken as an example, and an MSSR improvement from 50 to 63 dB was demonstrated. [ABSTRACT FROM AUTHOR]