Single-Chip Beam Scanner with Integrated Light Source for Real-Time Light Detection and Ranging
Jisan Lee, Dongjae Shin, Bongyong Jang, Hyunil Byun, Changbum Lee, Changgyun Shin, Inoh Hwang, Dongshik Shim, Eunkyung Lee, Jinmyung Kim, Kyunghyun Son, Tatsuhiro Otsuka, Kyoungho Ha, Hyuck Choo
Abstract
For the first time to our knowledge, we present a single-chip solution for a solid-state 2D beam scanner achieving 10-m light detection and ranging (LIDAR) operation at 20 frames per second (fps). The beam scanner is integrated with a fully functional 32-channel optical phased array (OPA), 36 optical amplifiers, and a tunable laser, all on a 7.5×3-mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> single chip fabricated using III-V-on-silicon processes. In addition, we created and applied an ultrafast self-evolving OPA-calibration algorithm and digital signal processing to demonstrate real-time LIDAR operation. This work presents the first demonstration of a chip-scale LIDAR solution without using an external optical source or amplifier, making an ultra-low cost and compact LIDAR technology a reality.