He Yuxuan, Wang Qiang, Han Xu, Wang Zhonghan, Geng Wenpu, Fang Yuxi, Pan Zhongqi, Yue Yang
Institute of Modern Optics, Nankai University, Tianjin, 300350, China.
Angle AI (Tianjin) Technology Co. LTD, Tianjin, 300350, China.
Sci Rep. 2023 Sep 24;13(1):15945. doi: 10.1038/s41598-023-34199-4.
In a solid-state photonics-based Lidar, all essential components can be integrated into a silicon chip. It is simple and effective to use a tunable laser source to implement Lidar's beam steering. However, how to effectively increase the steering angle in a small wavelength tuning range is usually a key challenge due to the limited material and waveguide dispersion. In Silicon-on-insulator waveguide, we design a novel solid-state Lidar using two trans-electrical (TE) polarized beams counter-propagating towards each other. Two corresponding output beams from just a single grating coupler (GC) can be seamlessly combined to double the beam steering angle. Furthermore, a low-priced solid-state Lidar is designed for TE polarized beams counter-propagating towards each other by using wavelength division multiplexed laser array.
在基于固态光子学的激光雷达中，所有基本组件都可以集成到硅芯片中。使用可调谐激光源来实现激光雷达的光束转向既简单又有效。然而，由于材料和波导色散有限，如何在小波长调谐范围内有效增加转向角度通常是一个关键挑战。在绝缘体上硅波导中，我们设计了一种新型固态激光雷达，使用两个相互反向传播的横向电（TE）偏振光束。仅通过一个光栅耦合器（GC）产生的两个相应输出光束可以无缝组合，使光束转向角度加倍。此外，通过使用波分复用激光阵列，设计了一种用于相互反向传播的TE偏振光束的低价固态激光雷达。
