Liquid-Crystal-Based Visible-Light Integrated Optical Phased Arrays

2019 ◽  
Author(s):  
Jelena Notaros ◽  
Milica Notaros ◽  
Manan Raval ◽  
Michael R. Watts
Keyword(s):  
Liquid Crystal ◽  
Visible Light ◽  
Phased Arrays ◽  
Integrated Optical ◽  
Optical Phased Arrays

scholarly journals Integrated Optical Phased Arrays for Beam Forming and Steering

2021 ◽  
Vol 11 (9) ◽  
pp. 4017
Author(s):  
Yongjun Guo ◽  
Yuhao Guo ◽  
Chunshu Li ◽  
Hao Zhang ◽  
Xiaoyan Zhou ◽  
...  
Keyword(s):  
Near Infrared ◽  
Phased Arrays ◽  
Mechanical Stability ◽  
Building Blocks ◽  
High Yield ◽  
Beam Forming ◽  
Integrated Optical ◽  
Optical Phased Arrays ◽  
Infrared Spectral ◽  
Spectral Ranges

Integrated optical phased arrays can be used for beam shaping and steering with a small footprint, lightweight, high mechanical stability, low price, and high-yield, benefiting from the mature CMOS-compatible fabrication. This paper reviews the development of integrated optical phased arrays in recent years. The principles, building blocks, and configurations of integrated optical phased arrays for beam forming and steering are presented. Various material platforms can be used to build integrated optical phased arrays, e.g., silicon photonics platforms, III/V platforms, and III–V/silicon hybrid platforms. Integrated optical phased arrays can be implemented in the visible, near-infrared, and mid-infrared spectral ranges. The main performance parameters, such as field of view, beamwidth, sidelobe suppression, modulation speed, power consumption, scalability, and so on, are discussed in detail. Some of the typical applications of integrated optical phased arrays, such as free-space communication, light detection and ranging, imaging, and biological sensing, are shown, with future perspectives provided at the end.

Integrated Optical Phased Arrays for LiDAR, Communications, Augmented Reality, and Beyond

2020 ◽  
Author(s):  
Jelena Notaros ◽  
Milica Notaros ◽  
Manan Raval ◽  
Christopher V. Poulton ◽  
Matthew J. Byrd ◽  
...  
Keyword(s):  
Augmented Reality ◽  
Phased Arrays ◽  
Integrated Optical ◽  
Optical Phased Arrays

Optimization of electro-optic phase shifters for integrated optical phased arrays

2017 ◽  
Author(s):  
Dwayne D. Macik ◽  
Tyler E. Bravo ◽  
Seeley M. Pentecost ◽  
Francisco A. Espinal ◽  
Christi K. Madsen
Keyword(s):  
Phased Arrays ◽  
Phase Shifters ◽  
Electro Optic ◽  
Integrated Optical ◽  
Optical Phased Arrays

Design and simulation of single-electrode liquid crystal phased arrays

2006 ◽  
Vol 14 (4) ◽  
Author(s):  
B. Bellini ◽  
M. Geday ◽  
N. Bennis ◽  
A. Spadło ◽  
X. Quintana ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Optical Switching ◽  
Phased Arrays ◽  
Driving Voltage ◽  
Linear Phase ◽  
High Birefringence ◽  
Reconfigurable Devices ◽  
University Of Technology ◽  
Optical Phased Arrays ◽  
The Military

AbstractLiquid crystal (LC) phased arrays and gratings have been employed in optical switching and routing [1]. These diffractive optic elements are of great interest because they can be scaled up to a large number of elements and their optical properties can be electrically addressed with a low driving voltage. LC phase gratings have been achieved either by periodic addressing of pixels or by using periodically-modified structures. The latter approach leads to less reconfigurable devices but the addressing is simpler.In this paper we focus on optical phased arrays where the phase is varied either continuously or discretely and where the periodicity is induced by electrode configuration. We first describe a possible structure based on a conductive silicon wafer. We argue that this structure can induce either continuously or discretely varying arrays while applying single voltage to the array. In the second part we simulate the behaviour of such arrays. We base the simulation on a LC synthesized at the Military University of Technology, this high-birefringence nematic LC shows in a 4-μm thick cell a linear phase shift range of more than 360° between 1.2 V and 1.8 V. We calculate the distribution of the LC molecule director and assess the performance of the array with respect to the applied voltage. Finally, the relevance of such technology for switchable phased arrays is discussed.

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