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Discretization of annular-ring diffraction pattern for large-scale photonics beamforming

Khachaturian, Aroutin and Fatemi, Reza and Darbinian, Artsroun and Hajimiri, Ali (2022) Discretization of annular-ring diffraction pattern for large-scale photonics beamforming. Photonics Research, 10 (5). pp. 1177-1186. ISSN 2327-9125. doi:10.1364/prj.443061.

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A solid-state active beamformer based on the annular-ring diffraction pattern is demonstrated in an integrated photonic platform. Such a circularly symmetric annular-ring aperture achieves a radiating element limited field of view. 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. A 255-element multi-annular-ring optical phased array with active beamforming is implemented in a standard photonics process. A total of 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.

Item Type:Article
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URLURL TypeDescription Paper
Khachaturian, Aroutin0000-0001-8304-3302
Fatemi, Reza0000-0001-9081-2608
Hajimiri, Ali0000-0001-6736-8019
Additional Information:© 2022 Chinese Laser Press. Received 10 September 2021; revised 28 February 2022; accepted 1 March 2022; posted 1 March 2022 (Doc. ID 443061); published 14 April 2022. The authors would like to acknowledge Behrooz Abiri and Parham Porsandeh Khial for their valuable inputs in the design and analysis of this work. The authors disclose no conflicts of interest. Data Availability: Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.
Issue or Number:5
Record Number:CaltechAUTHORS:20220719-954621100
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Official Citation:Aroutin Khachaturian, Reza Fatemi, Artsroun Darbinian, and Ali Hajimiri, "Discretization of annular-ring diffraction pattern for large-scale photonics beamforming," Photon. Res. 10, 1177-1186 (2022); DOI: 10.1364/prj.443061
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:115684
Deposited By: Tony Diaz
Deposited On:20 Jul 2022 16:08
Last Modified:20 Jul 2022 16:08

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