A Bloch surface wave (BSW) confined at the surface of a truncated dielectric multilayer is a low-loss platform for chip-scale photonic integration. The guided BSW in a dielectric ridge is confined by the photonic band gap vertically, yet couples into the continuum modes of the multilayered substrate horizontally. We demonstrate that a low-loss BSW waveguide can be realized with the quasibound BSW modes in the continuum by engineering the geometric parameters, due to the destructive interference of multiple leakage channels in the multilayered substrate. In addition, a high-Q BSW resonator is obtained by optimizing the geometric parameter of the multilayered substrate, which provides an alternative way to realize ultrasmall resonators with a high-Q factor. The photonic integrated circuits on a low-loss BSW platform can be utilized for optical communications, enhancing light-matter interactions, and nonlinear optical applications.

中文翻译：

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连续介质中基于束缚布洛赫表面波的低损耗光子集成元件

布洛赫表面波 (BSW) 限制在截断电介质多层膜的表面，是用于芯片级光子集成的低损耗平台。介电脊中的引导 BSW 被垂直光子带隙限制，但水平耦合到多层基板的连续模式。我们证明，由于多层基板中多个泄漏通道的破坏性干扰，可以通过设计几何参数在连续介质中使用准束缚 BSW 模式实现低损耗 BSW 波导。此外，通过优化多层基板的几何参数获得了高Q BSW 谐振器，这为实现具有高Q 的超小型谐振器提供了一种替代方法。因素。低损耗 BSW 平台上的光子集成电路可用于光通信、增强光物质相互作用和非线性光学应用。