论文标题
用光子阵列的共振圆形波导传感
Topological Sensing with Photonic Arrays of Resonant Circular Waveguides
论文作者
论文摘要
我们提出，具有亚波长光栅的共振圆形电介质波导的光子阵列可以设计为坚固且敏感的拓扑化学传感器。该设备可以通过光子边缘模式检测到给定的化学物种的痕量，而光子边缘模式不受大多数疾病来源。我们在中红外进行了模拟，该模拟是指化学分子与强烈耦合的谐振器的光子晶格所引入的吸收损失。由于设备的拓扑性质，其化学敏感性随系统尺寸线性缩放，并且可以在毫米尺度上达到每亿亿美元的范围。我们的发现表明，拓扑化学传感器可以增强新型芯片综合光子传感技术的发展。
We propose that a photonic array of resonant circular dielectric waveguides with subwavelength grating can be designed as a robust and sensitive topological chemical sensor. The device can detect trace amounts of a given chemical species through photonic edge modes that are impervious to most sources of disorder. We perform a simulation in the mid-infrared that accounts for the absorption loss introduced by chemical molecules in contact with a strongly coupled photonic lattice of resonators. Due to the topological nature of the device, its chemical sensitivity scales linearly with the system size and can reach parts-per-billion range at the millimeter scale. Our findings suggest that topological chemical sensors could empower the development of novel on-chip integrated photonic sensing technologies.
