Decoupling of multiple coupled phononic crystal waveguides: application to acoustic demultiplexing
Decoupling of multiple coupled phononic crystal waveguides: application to acoustic demultiplexing
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DOI：
10.1088/1361-6463/aa5873
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发表时间：
2017-02
期刊：
影响因子：
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通讯作者：
Qiushun Zou;Wenxing Liu;Tianbao Yu;N. Liu;Tongbiao Wang;Q. Liao
中科院分区：
文献类型：
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作者：
Qiushun Zou;Wenxing Liu;Tianbao Yu;N. Liu;Tongbiao Wang;Q. Liao
我们表明，耦合声子晶体波导（PnCW）的去耦通过适当的设计可以实现。这种解耦特性可以推广到任意数量的并联耦合PnCW的耦合。用于去耦的声波波长对耦合的PnCW的数量不敏感。解耦导致相邻PnCW的功率传输的消除，并且使得紧凑声学部件的设计更容易。作为我们的工作的一个可能的应用，一种新的1-到-2声解复用器的数值模拟表明，采用在交叉点频率在两个和三个耦合PnCW的去耦。这种设计思想为声信号的解复用提供了一种新的方法和紧凑的模型，可以在未来的声波电路中得到实际应用。
We show that the decoupling of two coupled phononic crystal waveguides (PnCWs) by a proper design can be achieved. And this decoupling property can be extended to the coupling of any number of parallel coupled PnCWs. The acoustic wavelength for decoupling is insensitive to the number of coupled PnCWs. Decoupling induces the extinction of neighbor PnCWs’ power transfer and makes the design of compact acoustic components easier. As a possible application of our work, a new kind of 1-to-2 acoustic demultiplexers are numerically demonstrated by employing the decoupling at the crossing-point frequency in two and three coupled PnCWs. This design concept provides a novel method and compact model for acoustic demultiplexing and can present practical applications in future acoustic wave circuits.