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FMCW LiDAR芯片与SLG光束扫描仪和k-clock干扰仪集成,用于使用波长扫描激光源进行操作

Shumpei Yamazaki, Takemasa Tamanuki, Hiroyuki Ito

|June 11, 2024

概括

我们开发了一个光子芯片,用于频率调制的连续波光检测和测距 (FMCW LiDAR). 这个集成芯片可以同时扫描和射程达7.1米的光束,捕获点云图像.

科学领域:

光学和光学工程的光学和光学工程.
集成电路设计集成电路设计
传感和测量技术传感和测量技术

背景情况:

频率调制的连续波光检测和测距 (FMCW LiDAR) 对自动驾驶系统至关重要.
现有的FMCW LiDAR系统经常面临整合和范围准确性的挑战.
光学为先进的光学功能提供了一个可扩展的平台.

研究的目的:

在光子平台上制造一个集成的FMCW LiDAR芯片.
为了实现同时进行光束扫描和FMCW光源生成.
为了实现准确的距离和点云图像捕获.

主要方法:

制造一个FMCW LiDAR芯片,集成一个慢光格子 (SLG) 束扫描仪和一个光学干扰仪.
通过波长扫描同时进行光束扫描和FMCW光源生成.
使用干扰仪产生的k时钟进行非线性补偿,使用24厘米Si波导延迟线.

主要成果:

成功制造了集成的FMCW LiDAR芯片.
证明了同时进行光束扫描和FMCW光源生成.
实现了高达7.1米的范围,并捕获了点云图像.

结论:

开发的光子芯片使集成的FMCW LiDAR能够同时进行光束扫描和距离测量.
k-clock生成和非线性补偿是准确测距的关键.
通过修改波导长度和插曲技术来扩大范围的潜力.

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