Frequency comb in a parametrically modulated micro-resonator参数调制微谐振器中的频率梳现象

被引：0
作者：
Xuefeng Wang
Qiqi Yang
Zhan Shi
Ronghua Huan
Weiqiu Zhu
Xingjian Jing
Zichen Deng
Xueyong Wei
机构：
[1] Northwestern Polytechnical University,Department of Engineering Mechanics, MIIT Key Laboratory of Dynamics and Control of Complex Systems
[2] Zhejiang University,Department of Mechanics, Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province
[3] Xi’an Jiaotong University,State Key Laboratory for Manufacturing Systems Engineering
[4] City University of Hong Kong,Department of Mechanical Engineering
来源：
Acta Mechanica Sinica | 2022年 / 38卷
关键词：
Micro-resonator; Nonlinear dynamics; Vibration; Parametrical modulation; Frequency comb;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
In this paper, we report the frequency comb response experimentally and analytically in a rhombic micro-resonator with parametrical modulation. When the electrostatically actuated rhombic micro-resonator is modulated axially by a low-frequency periodic excitation, a comb-like vibration response with few equidistant positioned fingers in the frequency domain is observed. The finger spacing of frequency comb response is exactly consistent with modulation frequency and the number and amplitude of the fingers can be tuned by modulation strength. A mixed frequency comb with extra comb fingers is further generated when the resonator is modulated simultaneously by two different low-frequency excitation signals. By adjusting the relation of the two modulation frequencies, unequal spacing frequency combs are achieved for the first time, which leads to a more flexible tunability of the comb spacing for different applications. Theoretical analysis based on the dynamic model well explains the corresponding observations.
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