论文标题
多路复用引导的光波和声波，可有效的声学设备
Multiplexing Guided Optical and Acoustic Waves for Efficient Acousto-Optic Devices
论文作者
论文摘要
声学设备利用声学和光场的重叠来促进光子 - 音波相互作用。对于紧密限制的光场和声学场，例如在集成设备中可实现的子波长尺度，可以增强这种相互作用。从这种增强中完全受益的宽带操作需要光线和声音才能在同一横截面中共同填充，这是该场目前缺乏的几何形状。我们介绍了“声学多路复用器”，它可以实现此共线性几何形状，并通过模拟概念验证设计进行了演示。使用悬浮的硅和二氧化硅梁，多路复用器将两种光学模式和声学模式结合到一个单一的共同引入的输出端口，具有低插入损失和光学和声学的反射。多路复用器在其类别中的第一个设计使集成的声学设备能够实现有效的光子 - 光子相互作用。
Acousto-optic devices utilize the overlap of acoustic and optical fields to facilitate photon-phonon interactions. For tightly confined optical and acoustic fields, such as the sub-wavelength scales achievable in integrated devices, this interaction is enhanced. Broadband operation which fully benefits from this enhancement requires light and sound to co-propagate in the same cross-section, a geometry currently lacking in the field. We introduce the `acoustic-optical multiplexer', which enables this co-linear geometry, and demonstrate through simulations a proof-of-concept design. Using suspended silicon and silica beams, the multiplexer combines two optical modes and an acoustic mode into a single, co-guided output port with low insertion loss and reflection for both optics and acoustics. The first design in its class, the multiplexer enables integrated acousto-optic devices to achieve efficient photon-phonon interactions.
