Detection and Sensing Using Coupled Oscillatory Systems at the Synchronization Edge
Detection and Sensing Using Coupled Oscillatory Systems at the Synchronization Edge
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DOI：
10.1109/jsen.2020.3002933
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发表时间：
2020-11
影响因子：
4.3
通讯作者：
Ke Huang;M. Hossein-Zadeh
中科院分区：
文献类型：
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作者：
Ke Huang;M. Hossein-Zadeh
本文从理论上研究了由两个初始同步的相似或不相似振子组成的耦合振荡系统的拍频对其中一个振子频率的弱扰动的敏感性。基于著名的仓本模型，我们解析地证明了其中一个振子的外部扰动引起的两个耦合振子同步边缘附近拍频的变化，远大于同一水平扰动引起的孤立振子的频移.实验测量了两个不同的耦合振荡系统对外部扰动的响应，验证了理论预测的正确性：1）两个双向耦合的电子Colpitts振荡器，当光致电流施加到其中一个时。2)一种单向耦合到光电振荡器（OEO）的电子振荡器，当OEO的延迟线的温度改变时。
We theoretically investigate the sensitivity of the beat frequency in a coupled oscillatory system comprising two originally synchronized similar or dissimilar oscillators up on weak perturbation of the frequency of one of the oscillators. Based on the well-known Kuramoto model, we analytically show that the variation of the beat frequency near the synchronization edge of two coupled oscillators induced by external perturbation of one of the oscillators, is much larger than the frequency shift of an isolated oscillator induced by the same level of perturbation. The theoretical predications are validated by experimental measurements of the response of two different coupled oscillatory systems to external perturbation: 1) Two bidirectionally coupled electronic Colpitts oscillators, when a photo induced current is applied to one of them. 2) An electronic oscillator unidirectionally coupled to an optoelectronic oscillator (OEO), when the temperature of the delay line of the OEO is changed.