2021/09/10 by Aroutin Khachaturian, Khachaturian, Aroutin, Reza Fatemi +5 · 1 citation
Engineering · #Advanced Photonic Communication Systems #Applied Physics (physics.app-ph) #FOS: Electrical engineering #FOS: Physical sciences #Optics (physics.optics) #Photonic and Optical Devices #Semiconductor Lasers and Optical Devices #Systems and Control (eess.SY) #electronic engineering #information engineering
paper · pdf · doi:10.48550/arxiv.2109.05118
openalex publication_date 2021/09/10 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
A solid-state active beamformer based on the annular-ring diffraction pattern is proposed for an integrated photonic platform. Such a circularly symmetric annular-ring aperture achieves radiating element limited FOV. Furthermore, it is demonstrated that a multi-annular-ring aperture with a fixed linear density of elements maintains the beam efficiency for larger apertures while reducing the beamwidth and side-lobe-level (SLL). A 255-element multi-annular-ring OPA with active beamforming is implemented in a standard photonics process. 510 phase and amplitude modulators enable beamforming and beam steering using this aperture. A row-column drive methodology reduces the required electrical drivers by more than a factor of 5.