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Office of Scientific and Technical Information
 

Phase-wrapping method for beam steering in optical phased arrays

Patent ·
OSTI ID:1924969
;
A method and apparatus are provided for controlling the phase shifts produced in a binary corporate tree network of the kind, e.g., that can drive a phased array for steering an optical beam. The method employs a novel phase-wrapping technique in which an entire layer of the binary tree is disabled when the phase added in that layer reaches 2π. With that technique, it is possible to economize on electrical control lines and on the use of electric power, while still maintaining the ability to produce arbitrary phases at the output of the tree network.
Research Organization:
Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
DOE Contract Number:
NA0003525
Assignee:
National Technology & Engineering Solutions of Sandia, LLC (Albuquerque, NM)
Patent Number(s):
11,409,183
Application Number:
17/182,883
OSTI ID:
1924969
Country of Publication:
United States
Language:
English

References (9)

Fully integrated hybrid silicon two dimensional beam scanner journal February 2015
On-chip platform for a phased array with minimal beam divergence and wide field-of-view journal January 2018
Electronically controlled optical beam-steering by an active phased array of metallic nanoantennas journal January 2013
High speed travelling wave carrier depletion silicon Mach-Zehnder modulator conference May 2012
Novel Ring Resonator-Based Integrated Photonic Beamformer for Broadband Phased Array Receive Antennas—Part I: Design and Performance Analysis journal January 2010
A Monolithically Integrated Large-Scale Optical Phased Array in Silicon-on-Insulator CMOS journal January 2018
Large-scale nanophotonic phased array journal January 2013
Phase optimization of a silicon photonic two-dimensional electro-optic phased array conference January 2019
Automatic Monitor-Based Tuning of an RF Silicon Photonic 1X4 Asymmetric Binary Tree True-Time-Delay Beamforming Network journal November 2018

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