Integrated Wavelength Beam Emitter on Silicon for Two-Dimensional Optical Scanning

A novel integrated on-chip wavelength-based beam emitter is proposed and fabricated to realize two-dimensional optical scanning. By combining both wavelength division filters and emission array, 80 × 8 far-field optical beam spots are achieved with a field of view of 6° × 4°. Both collimation and projection modes are tested and 64 wavelength channels are realized in 10 nm bandwidth from 1550 to 1560 nm. This device can be used for LIDAR, optical wireless communication, and high-speed infrared imaging applications.