Results 41 to 50 of about 26,576 (254)

Bandwidth control of forbidden transmission gaps in compound structures with subwavelength slits [PDF]

open access: yes, 2007
Phase resonances in transmission compound structures with subwavelength slits produce sharp dips in the transmission response. For all equal slits, the wavelengths of these sharp transmission minima can be varied by changing the width or the length of ...
Kuester, Edward F.   +3 more
core   +2 more sources

Compressive imaging of subwavelength structures: periodic rough surfaces [PDF]

open access: yesJournal of the Optical Society of America A, 2012
A compressed sensing scheme for near-field imaging of corrugations of relative sparse Fourier components is proposed. The scheme employs random sparse measurement of near field to recover the angular spectrum of the scattered field. It is shown heuristically and numerically that under the Rayleigh hypothesis the angular spectrum is compressible and ...
Fannjiang, Albert, Tseng, Hsiao-Chieh
openaire   +3 more sources

Enhanced Conversion Efficiency for Solar Cells With Periodic Grating of Nanowires

open access: yesIEEE Photonics Journal, 2013
The absorption of an amorphous silicon thin film with periodic gratings formed by an array of nanowires with varied heights and different profile shapes is studied.
Ya Han Ye   +2 more
doaj   +1 more source

A review of silicon subwavelength gratings: building break-through devices with anisotropic metamaterials

open access: yesNanophotonics, 2021
Silicon photonics is playing a key role in areas as diverse as high-speed optical communications, neural networks, supercomputing, quantum photonics, and sensing, which demand the development of highly efficient and compact light-processing devices.
Luque-González José Manuel   +8 more
doaj   +1 more source

Funneling Light Through a Subwavelength Aperture with Epsilon-Near-Zero Materials

open access: yes, 2011
Integration of the next generation of photonic structures with electronic and optical on-chip components requires the development of effective methods for confining and controlling light in subwavelength volumes.
D. C. Adams   +11 more
core   +1 more source

Optical Interaction of a Pair of Nanoholes in Au Film via Surface Plasmon Polaritons

open access: yesIEEE Photonics Journal, 2014
The optical interaction mechanism of a nanohole pair milled in an opaque gold film by means of surface plasmon polaritons (SPPs) propagation is investigated.
M. Janipour   +2 more
doaj   +1 more source

Molding the flow of light through subwavelength devices [PDF]

open access: yes, 2019
Patterning of subwavelength scale structures onto dielectrics allows engineering the local refractive index, dispersion and anisotropy of materials, thus opening new design possibilities which give unprecedented control of light shape in photonic ...
Molina-Fernandez, Iñigo
core  

Effects of using different plasmonic metals in metal/dielectric/metal subwavelength waveguides on guided dispersion characteristics

open access: yes, 2009
The fundamental guided dispersion characteristics of guided light in a subwavelength dielectric slit channel embedded by two different plasmonic metals are investigated when varying the gap width. As a result, an overall and salient picture of the guided
Ki Young Kim   +7 more
core   +1 more source

Tilted subwavelength gratings: controlling anisotropy in metamaterial nanophotonic waveguides [PDF]

open access: yes, 2018
Subwavelength grating (SWG) structures are an essential tool in silicon photonics, enabling the synthesis of metamaterials with a controllable refractive index.
Cheben, Pavel   +8 more
core   +1 more source

Subwavelength light bending by metal slit structures

open access: yesOptics Express, 2005
We discuss how light can be efficiently bent by nanoscale-width slit waveguides in metals. The discussion is based on accurate numerical solutions of Maxwell's equations. Our results, using a realistic model for silver at optical wavelengths, show that good right-angle bending transmission can be achieved for wavelengths lambda> 600 nm.
Tae-Woo, Lee, Stephen, Gray
openaire   +2 more sources

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