Analysis of Phase-Locking in Narrow-Band Optoelectronic Oscillators With Intermediate Frequency

In this paper, we investigate the phenomenon of phase-locking in laser-based optoelectronic oscillators from the point of view of nonlinear dynamics. We provide a theoretical and experimental analysis of the phase dynamics of these oscillators when driven by an external voltage in the intermediate frequency range. This configuration leads to phase-locking phenomena that can be theoretically analyzed from the viewpoint of Arnold tongues theory. Our research permits to determine analytically the range of parameters where the amplitude and the frequency of the driving source induce phase-locking.