光学相控阵在光束偏转中的应用分析及进展

Progress and applied analysis of the optical phased array in beam steering

与传统光学偏转器件相比,光学相控阵可实现快速、灵活、高精度的光束指向控制。介绍了光学相控阵实现光束偏转的基本原理,并对影响偏转效率及偏转角度的主要因素进行了系统分析,对现有材料可实现的光束偏转性能参数进行了对比分析。针对目前光学相控阵材料只能实现小角度偏转的缺陷,进一步介绍了增加其偏转角度的技术途径。最后对应用光学相控阵技术实现的大角度高精度偏转系统APPLE(adaptive photonic phase-locked elements)进行了介绍,并对其技术先进性与局限性进行了分析。

Compared to traditional optical beam steering device,optical phased array is fit for fast,agile and high accuracy beam control.In this paper,we introduce the basic principle of optical phased array for beam steering.Through the analysis of the deflection efficiency and steering angle,the performance of the optical phased array made up of different material in beam steering is described and compared.Subsequently,for the limitation that the present optical phased array material can only realize small angle steering,we introduce the approach to increasing the steering angle.Finally,the beam steering system that has a big steering angle as well as a high accuracy-APPLE（adaptive photonic phase-locked elements）is described.Its advantages and limitations are analyzed.