Photonic technology can be applied for processing wideband signals in RF system, which can overcome some difficulty in traditional RF and digital signal processing systems. RF signal power can determine the ability of RF photonic system. When input RF signal power arrives to a great extent, the photonic system can provide some new frequency terms because of nonlinear effects. In this paper, nonlinear characteristics of RF photonic processing system are investigated, and results in theory and experiment are demonstrated.
RF photonic link can provide significant benefits in transmitting and distributing RF signals to many separating stations by optical fiber. However, phase noise of transmitted RF signal in electrical-optical-electrical conversions is generally deteriorated by related optical noise. In this paper, a theoretical model about phase noise of RF photonic link is built, and the expressions and characteristics about phase noise are investigated. In the RF photonic link, phase noise is investigated for 100MHz RF signal. The experimental results can agree with the theoretical analysis.
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