A 1-D Heterodyne Lens-Free Optical Phased Array Camera With Reference Phase Shifting

A 1-D Heterodyne Lens-Free Optical Phased Array Camera With Reference Phase Shifting

This paper presents the first integrated silicon photonics optical phased array (OPA) receiver with imaging capabilities. A 32-element one-dimensional (1-D) OPA with an overall aperture size of 96 &#x00D7; 50 &#x03BC;m<sup>2</sup> is used to generate an electrically steerable &am...

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Bibliographic Details
Main Authors: Behrooz Abiri, Reza Fatemi, Ali Hajimiri
Format: Article
Language:English
Published: IEEE 2018-01-01
Series:IEEE Photonics Journal
Subjects:
Silicon nanophotonics
integrated photonic systems
imaging systems
nano-antennas
applications
Online Access:https://ieeexplore.ieee.org/document/8471238/
Description
Summary:This paper presents the first integrated silicon photonics optical phased array (OPA) receiver with imaging capabilities. A 32-element one-dimensional (1-D) OPA with an overall aperture size of 96 &#x00D7; 50 &#x03BC;m<sup>2</sup> is used to generate an electrically steerable &#x201C;gazing beam.&#x201D; The OPA receiver elements couple the incident light to on-chip waveguides that is processed as a phased array receiver. To minimize signal loss and enhance sensitivity, a heterodyne architecture with phase shifters in the local reference path is utilized. The OPA receiver can provide fully programmable angular selectivity with a grating-lobe-free field-of-view of 30&#x00B0; and a gazing beamwidth of 0.74&#x00B0;.
ISSN:1943-0655

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