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Title: Phase-wrapping method for beam steering in optical phased arrays

Abstract

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.

Inventors:
;
Issue Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1924969
Patent Number(s):
11409183
Application Number:
17/182,883
Assignee:
National Technology & Engineering Solutions of Sandia, LLC (Albuquerque, NM)
Patent Classifications (CPCs):
G - PHYSICS G02 - OPTICS G02F - DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING
DOE Contract Number:  
NA0003525
Resource Type:
Patent
Resource Relation:
Patent File Date: 02/23/2021
Country of Publication:
United States
Language:
English

Citation Formats

Gehl, Michael, and Long, Christopher Michael. Phase-wrapping method for beam steering in optical phased arrays. United States: N. p., 2022. Web.
Gehl, Michael, & Long, Christopher Michael. Phase-wrapping method for beam steering in optical phased arrays. United States.
Gehl, Michael, and Long, Christopher Michael. Tue . "Phase-wrapping method for beam steering in optical phased arrays". United States. https://www.osti.gov/servlets/purl/1924969.
@article{osti_1924969,
title = {Phase-wrapping method for beam steering in optical phased arrays},
author = {Gehl, Michael and Long, Christopher Michael},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2022},
month = {8}
}

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