Results 11 to 20 of about 19,023 (293)

Polarization insensitive blazed diffraction gratings [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2006
Gratings insensitive to light polarization may be useful in many areas of optical engineering, particularly in light demultiplexing application. We study different kinds of binary gratings able to present reflected efficiencies higher than 98% in the ...
Bonod Nicolas   +3 more
doaj   +3 more sources

Polarization-insensitive silicon optic switch based on mode manipulated power splitters and phase shifters

open access: yesAPL Photonics, 2023
A polarization-insensitive thermo-optic switch is proposed and demonstrated on the silicon-on-insulator platform with a 220 nm silicon core layer. The present device is based on the Mach–Zehnder interferometer structure, consisting of polarization ...
Shi Zhao   +3 more
doaj   +2 more sources

Polarization-Insensitive Graphene Modulator Based on Hybrid Plasmonic Waveguide

open access: yesPhotonics, 2022
A polarization-insensitive graphene-assisted electro-optic modulator is proposed. The orthogonal T-shaped metal slot hybrid plasmonic waveguide allows the polarization-independent propagation of transverse electric field mode and complex mode.
Songyue Liu   +7 more
doaj   +2 more sources

A polarization-insensitive broadband terahertz absorber with a multilayer structure

open access: yesResults in Physics, 2018
In this paper, a polarization-insensitive broadband terahertz absorber (PBTA) is presented and demonstrated, which can realize a polarization-insensitive, and broadband perfect absorption in the terahertz regime.
Hai-Feng Zhang   +4 more
doaj   +2 more sources

Polarization-Insensitive Silicon Photonic Variable Optical Attenuator

open access: yesPhotonics
We propose and demonstrate a polarization-insensitive silicon photonic variable optical attenuator. The designed device uses a two-dimensional apodized grating coupler as a surface-normal coupling interface, which has the advantages of low-cost fiber ...
Meixin Li   +7 more
doaj   +2 more sources

NMR of Insensitive Nuclei Enhanced by Dynamic Nuclear Polarization

open access: yesCHIMIA, 2011
Despite the powerful spectroscopic information it provides, Nuclear Magnetic Resonance (NMR) spectroscopy suffers from a lack of sensitivity, especially when dealing with nuclei other than protons. Even though NMR can be applied in a straightforward manner when dealing with abundant protons of organic molecules, it is very challenging to address ...
Miéville   +3 more
doaj   +6 more sources

Metasurface-based broadband polarization-insensitive polarization rotator

open access: yesOptics Express, 2022
The polarizations of electromagnetic (EM) waves are very important for transceivers. We propose a broadband polarization-insensitive polarization rotator (PIPR), which can realize 90° polarization rotation for incident waves with an arbitrary azimuth angle.
Wei, Liu   +6 more
openaire   +2 more sources

Evanescent wave induced polarization-insensitive self-organization of stratified single-negative materials

open access: yesNew Journal of Physics, 2021
Optical fields can induce optical forces between macroscopic objects, giving rise to different structures. Through rigorous calculation, we show that a collection of single negative slabs which possesses either negative permittivity or negative ...
Liyong Cui, Hang Yin
doaj   +1 more source

Fourier Convolution Operation on Metasurface-Based Hologram in Microwave Region

open access: yesPhotonics, 2021
In this paper, a 0.1λ0-thick 1-bit coding metasurface is proposed to achieve a polarization-insensitive hologram under oblique incidence, utilizing compact ground-backed patch unit cells.
Shuai Yang   +5 more
doaj   +1 more source

Broadband orbital angular momentum beam generation based on polarization-insensitive reflect array

open access: yesAIP Advances, 2023
Electromagnetic waves carrying orbital angular momentum (OAM) can be applied in various regions. Much research endeavor has been devoted to developing broadband and polarization-insensitive OAM beams that are preferred in many intriguing applications ...
Zhengping Zhang, Xiong Wang
doaj   +1 more source

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