Quasi-guided modes resulting from the band folding effect in a photonic crystal slab for enhanced interactions of matters with free-space radiations [PDF]
Beilstein 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
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Quasi-Guided Modes Supported by a Composite Grating Structure with Alternating Element Widths
Photonics, 2023 The efficiency of many optical processes is significantly dependent on the magnitude of the electric field. In this context, many artificially made resonating structures have been investigated to enhance light–matter interactions and facilitate the ...
Min Sun, Zhanghua Han
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Characteristics of guided modes in graphene-coated chiral nihility fibers. [PDF]
PLoS ONEIn this paper, guided modes in isotropic chiral nihility metamaterial fibers coated with graphene layers supported by conventional dielectric material are studied theoretically. Kubo formalism is applied to model the conductivity of single-layer graphene,
Muhammad Usman Shahid +4 more
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A Theoretical Description of Node-Aligned Resonant Waveguide Gratings
Optics, 2022 Waveguide gratings are used for applications such as guided-mode resonance filters and fiber-to-chip couplers. A waveguide grating typically consists of a stack of a single-mode slab waveguide and a grating. The filling factor of the grating with respect
Maik Meudt +3 more
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Miniaturized Backward Coupler Realized by the Circuit‐Based Planar Hyperbolic Waveguide
Advanced Photonics Research, 2021 Planar waveguides limit the transmission of electromagnetic waves in a specific direction and have a wide range of applications in filters, sensors, and energy‐transfer devices.
Zhiwei Guo +3 more
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Numerical Investigation of Excitation of Various Lamb Waves Modes in Thin Plastic Films
Applied Sciences, 2022 Ultrasonic-guided waves are widely used for the non-destructive testing and material characterization of plates and thin films. In the case of thin plastic polyvinyl chloride (PVC), films up to 3.2 MHz with only two Lamb wave modes, antisymmetrical A0 ...
Rymantas Jonas Kazys +2 more
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Coupling between guided modes of two parallel nanofibers
New Journal of Physics, 2020 We study the coupling between the fundamental guided modes of two identical parallel nanofibers analytically and numerically. We calculate the coefficients of directional coupling, butt coupling, and self coupling as functions of the fiber radius, the ...
Fam Le Kien +3 more
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Using quasi-guided modes for modeling the transfer behavior of bent dielectric slab waveguides [PDF]
Advances in Radio Science, 2010 The connection of two straight dielectric multimode slab waveguides by a circular bent waveguide is analyzed by means of quasi-guided modes. These modes correspond to the well known leaky modes, but own real eigenvalues, thus the mathematical ...
M. Stallein, B. Bandlow, R. Schuhmann
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Nodal degeneracy of guided modes in uniaxial crystal slabs
Frontiers in Physics, 2023 We study the dispersions of the guided modes in the continuous uniaxial crystal slab waveguide and engineer their degeneracies through dielectric anisotropy.
Xinyang Pan +8 more
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Considering Symmetry Properties of InP Nanowire/Light Incidence Systems to Gain Broadband Absorption
IEEE Photonics Journal, 2017 Geometrically designed III-V nanowire arrays are promising candidates for disruptive optoelectronics due to the possibility of obtaining a strongly enhanced absorption resulting from nanophotonic resonance effects.
Mahtab Aghaeipour +2 more
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