ARRAW：抗共振反射声波导管
ARRAW: Anti-resonant reflecting acoustic waveguides
摘要：
声、光声片上技术的发展要求在集成绝缘体上硅（SOI）系统中引导、存储和连接声波和光波的新解决方案。该领域的最大挑战之一是抑制传播声波的辐射耗散，同时将光场和声场共同定位在集成波导的同一区域中。在这里，我们解决这个问题，通过引入反共振反射声波波导（ARRAW）-机械模拟的反共振反射光波导（ARRAW）。我们讨论了反共振制导的原理，并建立了设计高效ARRAW的指导方针。最后，我们展示了最简单的硅/硅ARRAW平台的例子，可以同时作为近红外光波导，并支持强大的后向布里渊散射。
英文摘要：
Development of acoustic and optoacoustic on-chip technologies calls for new solutions to guiding, storing and interfacing acoustic and optical waves in integrated silicon-on-insulator (SOI) systems. One of the biggest challenges in this field is to suppress the radiative dissipation of the propagating acoustic waves, while co-localizing the optical and acoustic fields in the same region of an integrated waveguide. Here we address this problem by introducing Anti-Resonant Reflecting Acoustic Waveguides (ARRAWs) -- mechanical analogues of the Anti-Resonant Reflecting Optical Waveguides (ARROWs). We discuss the principles of anti-resonant guidance and establish guidelines for designing efficient ARRAWs. Finally, we demonstrate examples of the simplest silicon/silica ARRAW platforms that can simultaneously serve as near-IR optical waveguides, and support strong backward Brillouin scattering.
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