TBSI at Tsinghua SIGS published an important research review on the technological breakthrough in on-chip LIDAR systems on Nature
The article focuses on two current integrated beam-steering devices for on-chip LIDAR: the optical phased array (OPA) and the focal plane switching array (FPSA). The working mechanism of OPA is analyzed and the article identifies the reasons that make them difficult to integrate densely on a single chip on a large scale. In contrast, FPSA uses a camera-like optical system to map each angle in the field of view where the target is located to each pixel in the focal plane behind the imaging lens. The article suggests the possibility of integrating a large array of antennas on a single chip. The article further reviews the work of Ming C. Wu's group at the University of California, Berkeley, USA, published in the same issue of "Nature" on a MEMS-based large-scale FPSA LiDAR system. The article presents the problem of insufficient lateral resolution in FPSA-based LIDAR systems and offers a solution to improve the performance by reducing the size of the optical switches. Finally, the article comments that further miniaturization and improvements in performance will make FPSA a promising technology for applications including megapixel 3D lidar and optical communications with the mature of processing technologies.
About:
Tsinghua-Berkeley Shenzhen Institute (TBSI) is jointly established by Tsinghua University and University of California, Berkeley under the support of the Shenzhen Municipal Government. Especially, Data Science and Information Technology, full-English program, has dual degree for master of Tsinghua University and Master of Engineering at University of California, Berkeley.
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THU Online Application System http://gradadmission.tsinghua.edu.cn/
Select "Tsinghua Shenzhen International Graduate School"
Choose Program "Data Science and Information Technology"
SOURCE Tsinghua Shenzhen International Graduate School
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