Filterless photonic generation of microwave signals with various frequency multiplication factors via series connected polarization modulators is proposed and demonstrated experimentally. Frequency octupling, sextupling, or quadrupling microwave signal can be obtained when the polarization state of the light wave, the modulation indices of the modulators, and the phase of the radio frequency (RF) driving signal are suitably set. The optical sideband suppression ratios and RF spurious suppression ratios of the generated frequency multiplication signals are measured. Besides, the frequency-tunable ability and phase noise are analyzed.

IEEE transactions on microwave theory and techniques

series connected polarization modulators (PolMs); Optical polarization; Frequency modulation; Microwave photonic; Optical modulation; Microwave photonics; Optical devices; spurious sideband suppression; Research

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