Abstract
A detailed study of injection-pulling behavior of an injection-locked and phase-locked loop (IL-PLL) single-loop optoelectronic oscillator (OEO) under radio frequency (RF) signal injection is presented. From the locking equation, the expression for the output spectrum of the IL-PLL OEO under RF injection is derived in time domain, to evaluate the spurious performance of the system. The frequency response of the spurious outputs due to RF injection signal is investigated in terms of the injection transfer function. Also, a dual-loop model of the IL-PLL OEO is developed to study the phase noise performance of the system with co-frequency RF injection signal. The experimental results are given in partial support of the conclusions of the analysis.
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