This article presents a detailed study of injection-locking characteristics of a single-loop optoelectronic oscillator (OEO) under strong radio frequency (RF) signal injection. We provide formulas for the steady-state phase-angle after locking, and the locking time for a higher level of a locking signal, considering only the phase perturbation. We also provide a compact expression for the main spectrum components of the pulled OEO in terms of the beat frequency, which is useful to evaluate and quantify the injection-pulling effects in the OEO. The experimental results provide partial support to the conclusion of the analysis. The analytical and experimental results are presented in design curves, which can be used to determine the required properties of an injection-locked OEO for a specific performance of the oscillator.

中文翻译：

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射频信号注入下光电振荡器注入锁定和注入拉动的理论与实验研究

本文详细研究了单回路光电振荡器 (OEO) 在强射频 (RF) 信号注入下的注入锁定特性。我们提供了锁定后稳态相位角的公式，以及更高级别锁定信号的锁定时间，仅考虑相位扰动。我们还根据拍频提供了拉动 OEO 的主要频谱分量的紧凑表达式，这有助于评估和量化 OEO 中的注入-拉动效应。实验结果为分析结论提供了部分支持。分析和实验结果显示在设计曲线中，可用于确定针对振荡器特定性能的注入锁定 OEO 所需的特性。