论文标题
用于逆设计的硅光子组件的集成光电架构
An Integrated Optical Circuit Architecture for Inverse-Designed Silicon Photonic Components
论文作者
论文摘要
在这项工作中，我们演示了一个紧凑的拓扑优化硅光子设备的紧凑工具包，这些设备以插件方式排列，以实现许多不同的光子集成电路，既被动又有活性，每个电路都有一个小的足迹。硅启动器1550-nm工具包包含2x2 3DB分离器结合仪，2x2波导跨界车和2x2的全部前向添加剂谐振器。谐振器可以通过热光效应或相变覆层或自由载体注入来成为2x2电流横梁开关。对于这项工作中证明的十个电路中的每一个，光子设备的工具包使紧凑型电路能够达到低插入损失和低串扰。通过采用复杂的反设计方法，可以使每个设备的设计结构，形状和尺寸更加灵活，以更好地适合大电路的体系结构。对于紧凑的体系结构，我们提供一个统一的平行波导电路框架，将设备设计为无缝拟合，从而实现低复杂电路设计。
In this work, we demonstrate a compact toolkit of inverse-designed topologically optimized silicon-photonic devices that are arranged in a plug-and-play fashion to realize many different photonic integrated circuits, both passive and active, each with a small footprint. The silicon-on-insulator 1550-nm toolkit contains a 2x2 3dB splitter-combiner, a 2x2 waveguide crossover and a 2x2 all-forward add-drop resonator. The resonator can become a 2x2 electro-optical crossbar switch by means of the thermo-optical effect or phase-change cladding or free-carrier injection. For each of the ten circuits demonstrated in this work, the toolkit of photonic devices enables the compact circuit to achieve low insertion loss and low crosstalk. By adopting the sophisticated inverse-design approach, the design structure, shape, and sizing of each individual device can be made more flexible to better suit the architecture of the greater circuit. For a compact architecture, we present a unified, parallel waveguide circuit framework into which the devices are designed to fit seamlessly, thus enabling low-complexity circuit design.
