Lidar (/ ˈlaɪdɑːr /, also LIDAR, an acronym of "light detection and ranging" [1] or "laser imaging, detection, and ranging" [2]) is a method for determining ranges by targeting an object or a surface with a laser and measuring the time for the reflected light to return to the receiver.

Jan 26, 2025 · The frequency-modulated continuous-wave (FMCW) technology combined with optical phased array (OPA) is promising for the all-solid-state light detection and ranging (LiDAR).

Aug 18, 2021 · Optical phased array (OPA) technology is an innovative approach to lidar that is rapidly emerging to meet performance and cost requirements for the autonomous vehice (AV) market. This exciting new lidar architecture is specifically designed for low-cost, high-volume, automotive-grade manufacturing.

Optical phased arrays based on silicon photonics are considered a promising solution to low-cost, high-speed, robust solid-state LIDAR with large optical apertures yet compact footprints. In this example, we show how to design an integrated optical phased array antenna which can be used for both transmitting and receiving functions, from the ...

First, we give an overview of the technology and how it combines the benefits of coherent LiDAR with the integration capabilities of silicon photonics. Then, an 8192-element optical phased array is shown with individually-addressed elements driven by custom CMOS electronics.

In this Letter, we present, to the best of our knowledge, the first demonstration of coherent LIDAR with integrated op-tical phased arrays for solid-state beam steering. Frequency-modulated continuous-wave (FMCW) LIDAR is utilized with a compact laser diode.

Mar 9, 2022 · A large focal plane switch array is constructed to steer the laser beam of a LiDAR system, leading to 3D imaging with 16,384 pixels, improving the resolution and coverage of solid-state...

Nov 15, 2022 · As adoption of LiDAR increases, one specific approach to LiDAR is rapidly emerging: optical phased array (OPA) technology. How does OPA compare to other LiDAR approaches? Traditional LiDAR approaches tend to be mostly mechanical and have moving parts, but OPA is true 100% solid state.

We present, to the best of our knowledge, the first demonstration of coherent solid-state light detection and ranging (LIDAR) using optical phased arrays in a silicon photonics platform. An integrated transmitting and receiving frequency-modulated continuous-wave circuit was initially developed and tested to confirm on-chip ranging.

We innovatively design a time-lens based optical phased arrayed Lidar to improve resolution up to 5.6 mm for a 6-m ranging. The ranging resolution is enhanced by 268 times compared to the traditional ToF Lidar.