Abstract
An approximate strong injection perturbation mathematical model to analyze the frequency pulling and non-linear dynamics in radio frequency (RF) signal driven optoelectronic microwave oscillator (OEO) is presented here. The formulas regarding the lock-range, the beat frequency and the average frequency are derived, which help to estimate the amount of phase perturbation in pulled (unlocked-driven) OEO more accurately considering both weak and strong RF signal injection. The analytical expressions for the spectral components of the pulled OEO are also given to predict the frequency pulling phenomenon of the pulled OEO. It is presented that our proposed analytical model has the capability to accurately determine the phase-locking and assessing the frequency pulling of RF driven single-loop OEO when injected by weak and strong RF signal. The verification of the accuracy of the proposed model is also done by the experiments.
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