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通过光学相位阵列和3D打印镜头进行光学光束方向和距离测量实验

Sidra Tul Muntaha, Ari Hokkanen, Mikko Harjanne

|August 13, 2025

概括

这项研究展示了波长调节的光学相位阵列 (OPAs),用于精确的光束方向. 这些OPA可实现精确的距离测量,增强用于自动驾驶汽车等应用的光探测和距离测量 (LiDAR) 系统.

科学领域:

光子学和光学工程光子学和光学工程
集成光学集成光学集成光学
光子学光子学

背景情况:

光学相位阵列 (OPA) 对于光束转向应用至关重要.
绝缘体上的 (SOI) 平台为集成光子设备提供了优势.
波长调整是控制光束方向的常见方法.

研究的目的:

在3微米SOI平台上研究边缘合1DOPA的光束方向能力.
描述具有不同音程值 (2微米和3微米) 的OPA的性能.
评估这些OPA在频率调制连续波 (FMCW) 距离测量方面的潜力.

主要方法:

设计和制造两种512通道的OPA,其间距为2微米和3微米.
对光束转向灵敏度和最大转向角度的实验性表征.
与圆柱形和3D打印镜头集成,用于光束聚合.
实施FMCW技术进行距离测量.

主要成果:

2微米角的OPA实现了1°/nm的转向灵敏度和45°的最大角度.
3微米的OPA表现出0.6°/nm的转向灵敏度和30°的最大角度.
实现了FMCW距离测量高达几米,精度高达5厘米.

结论:

在SOI上调节波长的OPA对于精确的光束方向是有效的.
高频道数量使得广泛的输出阵列适用于FMCW LiDAR.
这些进步显著提高了自主系统和绘图的LiDAR系统效率.

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