Discretization of Annular-Ring Diffraction Pattern for Large-Scale Photonics Beamforming
Abstract
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.
Cite
@article{arxiv.2109.05118,
title = {Discretization of Annular-Ring Diffraction Pattern for Large-Scale Photonics Beamforming},
author = {Aroutin Khachaturian and Reza Fatemi and Artsroun Darbinian and Ali Hajimiri},
journal= {arXiv preprint arXiv:2109.05118},
year = {2021}
}
Comments
12 pages and 9 figures submitted to OSA for publication