| Authors: | W. Bogaerts, S. Dwivedi, R. Jansen, X. Rottenberg, M.S. Dahlem | | Title: | A 2D Pixelated Optical Beam Scanner Controlled by the Laser Wavelength | | Format: | International Journal | | Publication date: | 8/2020 | | Journal/Conference/Book: | IEEE Journal on Selected Topics in Quantum Electronics
| | Volume(Issue): | 27(1) | | DOI: | 10.1109/JSTQE.2020.3017230 | | Citations: | 16 (Dimensions.ai - last update: 21/4/2024)
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Abstract
We present a chip-based optical beam scanner based on a dispersive optical phased array (OPA) that illuminates the far field with a pixelated pattern. To scale up the OPA to a large number of antennas, we break it up into manageable blocks with acceptable losses. The 2D wavelength scanning within a block is handled by dispersive delay lines. Between blocks, there are no delay lines, and the OPA will only have constructive interference for a discrete set of wavelengths. This results in the far-field illumination of a pixelated pattern along both x and y directions. The sidelobes and the power in the main lobe can be controlled by the power distribution of the individual OPA antennas. Related Research Topics
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