Imaging-based beam steering for free-space optical communication.
Imaging-based beam steering for free-space optical communication.
复制标题
用于自由空间光通信的基于成像的光束控制。
作者：
Sajad Saghaye Polkoo;C. K. Renshaw
基于成像的光束转向（IBBS）提供了一种实现紧凑、低功耗和低成本光束转向的途径，非常适合移动的自由空间光通信（FSOC）、LIDAR成像和其他主动照明应用。在IBBS中，透镜被动地将2D发射器阵列的每个像素映射到唯一的视线方向。通过像素选择实现具有动态波束成形的多个波束的电子波束转向。我们展示了有效的收集和准直的光从有机LED阵列到1.24毫拉德发散光束的指向精度为5.5毫拉德，并演示了41米的光链路。IBBS-FSOC链路的模拟和缩放分析预测使用高亮度垂直腔面发射激光器阵列的有效范围>1 km。
Imaging-based beam steering (IBBS) provides a route to compact, low-power, and low-cost beam steering ideal for mobile free-space optical communications (FSOC), LIDAR imaging, and other active illumination applications. In IBBS, a lens passively maps each pixel of a 2D emitter array into a unique line-of-sight direction. Electronic beam steering of multiple beams with dynamic beam shaping is implemented via pixel selection. We demonstrate efficient collection and collimation of light from an organic LED array into 1.24 mrad divergence beams with pointing accuracy of 5.5 mrad and demonstrate a 41 m optical link. Simulations and scaling analysis of IBBS-FSOC links predict effective ranges >1 km using high-brightness vertical-cavity surface-emitting laser arrays.