LAUSR

About LAUSR
Donate
Contact Us

Follow us:

You are not signed in:

Sign Up!


   Articles with "mode purity" as a keyword



Directly measuring mode purity of single component in known superposed optical vortices

Sign Up to like & get
recommendations! Published in 2021 at "Optics Communications"

DOI: 10.1016/j.optcom.2021.127600

Abstract: Mode purity is an important reference for the quality of the optical vortex. In this work, we propose a self-interference method to directly measure single component in superposed optical vortices based on phase-shifting technology. This… read more here.

Keywords: superposed optical; mode purity; single component;

Gain and mode purity filtering dual polarized OAM beam generation using cavity waveguide-based 3D transmitarray

Sign Up to like & get
recommendations! Published in 2024 at "Journal of Physics D: Applied Physics"

DOI: 10.1088/1361-6463/ad3169

Abstract: A 3D transmitarray (TA) is proposed to generate dual-polarized orbital angular momentum (OAM) beams with gain and mode purity filtering responses. The TA units are realized by square cavity filters with the same passband and… read more here.

Keywords: gain mode; purity filtering; purity; dual polarized ... See more keywords

Ultra-Compact Waveguide-Integrated TE-Mode Converters With High Mode Purity by Designing Ge/Si Patterns

Sign Up to like & get
recommendations! Published in 2019 at "IEEE Photonics Journal"

DOI: 10.1109/jphot.2019.2924544

Abstract: In this letter, we propose ultra-compact TE-polarized even-to-odd mode converter designs by introducing Ge/Si patterns into silicon waveguide-integrated functional region. The Ge areas with continuous boundaries are determined by topology optimization that combines finite element… read more here.

Keywords: high mode; mode purity; ultra compact; waveguide integrated ... See more keywords

Transmission Continuous Meta-Grating for Generating Wide-Band Low-to-High Order OAM With Extremely High Mode Purity

Sign Up to like & get
recommendations! Published in 2024 at "IEEE Transactions on Antennas and Propagation"

DOI: 10.1109/tap.2024.3404849

Abstract: This article presents a novel continuous dielectric meta-grating array (DMGA) for generating wide-band, high-performance transmission orbital angular momentum (OAM) vortex beams with high mode purity. A broadband meta-grating unit (MGU) was designed and modeled theoretically,… read more here.

Keywords: transmission; mode; high mode; mode purity ... See more keywords
Photo from academic.microsoft.com

Analyzing OAM mode purity in optical fibers with CNN-based deep learning

Sign Up to like & get
recommendations! Published in 2019 at "Chinese Optics Letters"

DOI: 10.3788/col201917.100603

Abstract: Inspired by recent rapid deep learning development, we present a convolutional-neural-network (CNN)-based algorithm to predict orbital angular momentum (OAM) mode purity in optical fibers using far-field patterns. It is found that this image-processing-based technique has… read more here.

Keywords: deep learning; purity; oam mode; mode purity ... See more keywords