Results 21 to 30 of about 1,054,457 (281)

Leaky Lamb Wave Radiation from a Waveguide Plate with Finite Width

open access: yesApplied Sciences, 2020
In this paper, leaky Lamb wave radiation from a waveguide plate with finite width is investigated to gain a basic understanding of the radiation characteristics of the plate-type waveguide sensor.
Sang-Jin Park   +2 more
doaj   +1 more source

Spectral tuning of diamond photonic crystal slabs by deposition of a thin layer with silicon vacancy centers

open access: yesNanophotonics, 2021
The controlled extraction of light from diamond optical color centers is essential for their practical prospective applications as single photon sources in quantum communications and as biomedical sensors in biosensing.
Fait Jan   +5 more
doaj   +1 more source

Angular Momentum of Leaky Modes in Hollow-Core Fibers

open access: yesFibers, 2022
It is known that angular momentum (AM) is an important characteristic of light, which can be separated into the spin (SAM) and orbital parts (OAM). The dynamical properties of the spin and orbital angular momentums are determined by the polarization and ...
Grigory Alagashev   +3 more
doaj   +1 more source

Leaky waves in planar dielectric waveguide

open access: yesDiscrete and Continuous Models and Applied Computational Science, 2019
A new analytical and numerical solution of the electrodynamic waveguide problem for leaky modes of a planar dielectric symmetric waveguide is proposed.
Dmitriy V. Divakov   +4 more
doaj   +1 more source

Computation of leaky modes in three-dimensional open elastic waveguides [PDF]

open access: yes, 2013
International audienceElastic guided waves are of interest for inspecting structures due to their ability to propagate over long distances. When the guiding structure is embedded into a solid matrix, waveguides are open and waves can be trapped or leaky.
Nguyen, Khac-Long   +3 more
core   +5 more sources

Spatial coherence filtering of normal incidence light through leaky mode engineering

open access: yesAIP Advances, 2022
Filtering light by coherence by metasurfaces would enable compact, integrable coherence filters. A recent such proposal centered on a metasurface of zigzags.
Hang Li   +9 more
doaj   +1 more source

Photonic-plasmonic mode coupling in nanopillar Ge-on-Si PIN photodiodes

open access: yesScientific Reports, 2021
Incorporating group IV photonic nanostructures within active top-illuminated photonic devices often requires light-transmissive contact schemes. In this context, plasmonic nanoapertures in metallic films can not only be realized using CMOS compatible ...
Lion Augel   +5 more
doaj   +1 more source

Influence of Subwavelength Grating Asymmetry on Long-Wavelength Infrared Transmittance Filters

open access: yesIEEE Photonics Journal, 2018
Subwavelength dielectric gratings provide a means of narrowband spectral filtering by coupling to quasi-guided leaky modes, providing a high reflectivity background and narrowband transmittance via Fano resonance behavior.
Michael Barrow   +2 more
doaj   +1 more source

Backside emission leaky-mode modulators

open access: yesOptics Express, 2017
We report on an advancement to leaky-mode modulators that allows for backside emission from the device. This is accomplished by adding a high spatial frequency surface relief grating (~300 nm period) to the backside of the modulator. The outcome being a theoretical arbitrary increase in usable output aperture, at the cost of angular deflection.
Stephen, McLaughlin   +3 more
openaire   +2 more sources

Quasi-guided modes resulting from the band folding effect in a photonic crystal slab for enhanced interactions of matters with free-space radiations

open access: yesBeilstein Journal of Nanotechnology, 2023
We elucidate that guided modes supported by a regular photonic crystal slab structure composed of a square lattice of air holes in a silicon slab will transition into quasi-guided (leaky) modes when the radius of every second column of air holes is ...
Kaili Sun   +3 more
doaj   +1 more source

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