基于间隙孤子动力学的耦合悬臂梁阵列全声子放大
All-phononic Amplification in Coupled Cantilever Arrays based on Gap Soliton Dynamics
摘要：
基于非线性带隙传输现象，提出了声子放大声子的机制。作为一个概念的想法可以应用到各种数量的系统，但我们介绍的具体想法，创造放大方案的链耦合悬臂阵列。一个链以位于梯形系统的上频带中的恒定频率被驱动，因此没有波进入系统。然而，频率被特别选择为非常接近对应于系统的色散关系的频率的最大值。当具有小幅度的相同频率的反相脉冲被引入第二链时，发生放大场景。如果两个信号都超过带隙传输的阈值幅度，则大幅度孤子进入系统-因此我们有放大器。虽然这个概念可以应用在各种情况下-所有的光学或所有的磁振子系统，我们选择耦合悬臂阵列的系统，并代表了一个明确的例子所提出的概念的应用。逻辑运算是另一个可能的领域，这种机制可以使用，这可能会显着拓宽视野考虑应用的带隙孤子动力学。
英文摘要：
We present a mechanism of amplification of phonons by phonons on the basis of nonlinear band-gap transmission phenomenon. As a concept the idea may be applied to the various number of systems, however we introduce the specific idea of creating amplification scenario in the chain of coupled cantilever arrays. One chain is driven at the constant frequency located in the upper band of the ladder system, thus no wave enters the system. However the frequency is specifically chosen to be very close to the maximum value of frequency corresponding to dispersion relation of the system. Amplification scenario happens when a counter phase pulse of same frequency with a small amplitude is introduced to the second chain. If both signals exceed a threshold amplitude for the band-gap transmission a large amplitude soliton enters the system - therefore we have an amplifier. Although the concept may be applied in a variety of contexts - all optical or all-magnonic systems, we choose the system of coupled cantilever arrays and represent a clear example of the application of presented conceptual idea. Logical operations is the other probable field, where such mechanism could be used, which might significantly broaden the horizon of considered applications of band-gap soliton dynamics.
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