Results 11 to 20 of about 5,758 (284)

Bandwidth broadening of a linear polarization converter by near-field metasurface coupling [PDF]

open access: yesScientific Reports, 2017
We experimentally demonstrate a highly efficient, broadband linear polarization converter functioning at terahertz frequencies. The linear polarization converter is composed of three metasurfaces and two dielectric layers interlaced with each other.
Xi Gao   +5 more
doaj   +2 more sources

A Waveguide Polarization Toolset Design Based on Mode Beating [PDF]

open access: yesIEEE Photonics Journal, 2011
A toolset of waveguide elements is examined, which can be combined to produce polarization functional devices in a single contiguous waveguide. In particular, waveguide implementations of an optical isolator and a polarization modulator are discussed ...
David C. Hutchings, Barry M. Holmes
doaj   +2 more sources

A Broadband Millimeter-Wave Circularly Polarized Folded Reflectarray Antenna Based on Transmissive Linear-to-Circular Polarization Converter [PDF]

open access: yesMicromachines
In this paper, a wideband circularly polarized folded reflectarray antenna (CPFRA) based on a transmissive linear-to-circular polarization converter is proposed. The CPFRA consists of a primary reflector and a sub-reflector.
Yue Cao   +4 more
doaj   +2 more sources

Terahertz multi-band absorber and dual-bandwidth polarization converter based on VO2 and graphene

open access: yesResults in Physics, 2023
A terahertz metamaterial with multiple functions is proposed based on patterned graphene, concentric gold rings and gold columns, and vanadium dioxide (VO2).
Yang Jia   +5 more
doaj   +2 more sources

Metamaterial polarization converter analysis: limits of performance [PDF]

open access: yesApplied Physics B, 2013
10 pages, 11 figures, 2 ...
Markovich, Dmitry L.   +4 more
openaire   +3 more sources

Broadband multifunctional polarization converter based on graphene and vanadium dioxide metasurfaces along with analytical methods [PDF]

open access: yesScientific Reports
In this paper, a tunable broadband multifunctional polarization converter based on graphene and vanadium dioxide (VO2) is designed. When VO2 is in the metallic state, the structure has the functions of three-band linear to linear and two-band linear to ...
Saman Heidari, Najmeh Nozhat
doaj   +2 more sources

On the specially designed fractal metasurface-based dual-polarization converter in the THz regime

open access: yesResults in Physics, 2020
A specially designed fractal metasurface-based structure was investigated as a dual-polarization converter operating in the terahertz (THz) band. The proposed converter has the ability to perform both the linear-to-cross (LX) and linear-to-circular (LC ...
M A Baqir   +2 more
exaly   +3 more sources

Efficient polarization converter for projection displays

open access: yesApplied Optics, 1997
In the waveguiding limit, a twisted nematic liquid crystal cell behaves as an achromatic polarization rotator. We propose and demonstrate the application of such a polarization rotator to convert unpolarized light into linearly polarized light with almost 100% efficiency.
Yip, W.C., Huang, Ho-chi, Kwok, Hoi Sing
openaire   +4 more sources

Design and Fabrication of a Holographic Radial Polarization Converter

open access: yesPhotonics, 2020
Radial polarization converters can convert an incident light into a radially polarized light, which is beneficial in a variety of applications. In this paper, a new design of holographic radial polarization converter is proposed which consists of eight ...
Jing-Heng Chen   +6 more
doaj   +2 more sources

Broadband wide-angle polarization converter

open access: yes2008 Conference on Lasers and Electro-Optics, 2008
A novel polarization converter using reflective metallic gratings and broadband polarization beam splitter is developed. This device converts an unpolarized light to linear polarization with over 85% efficiency.
Tsai, Chang Ching, Wu, Shin Tson
openaire   +4 more sources

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