ArticleNature communications2026
Monolithically integrated silicon photonic biaxial FMCW LiDAR system.
Article in Nature communications, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Three-dimensional sensing is critical for autonomous systems, robotics and industrial monitoring, motivating compact frequency-modulated continuous-wave (FMCW) LiDARs, which optically measure distance and velocity. However, current integrated designs using optical phased arrays (OPAs) for beam steering or focal-plane arrays (FPAs) for parallel reception face trade-offs in optical power, aperture and acquisition speed. Here we show a biaxial FMCW LiDAR that monolithically integrates an OPA transmitter and coherent FPA receiver with over 4500 functional components on separate optical paths, eliminating the need for circulators. A line-shaped beam enables agile steering, while a lens-assisted FPA provides a large receiving aperture and parallel single-wavelength readout. The system images at 20 m using 3.7 mW of emitted power, with 5 cm depth resolution and 1.4 mm/s velocity resolution. It produces point clouds at 10 frames per second (fps) and supports acquisition rates up to 41 fps, offering a compact and practical route towards integrated FMCW LiDAR.
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