The reliability and small size of solid state scanners makes them ideal for LIDAR. We fabricated an optical scanner using silicon photonics integrated circuit technology. The scanner comprises a ring resonator multiplexer and a number of grating arrays, and employs a beam switching method. The beam switching method means that the scanner is movement-free. We demonstrated the successful operation of this scanner. The multiplexer determines the optical path and one of the gratings is selected for the emitter. The scanning angle obtained was 6 degrees. LIDAR sensors can be used for automated cruising in automotive applications.
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