Results 11 to 20 of about 71,755 (196)

Guiding and Leakage Dispersion Characteristic of TM01Mode in a Circular Dielectric Rod

open access: yesInternational Journal of Antennas and Propagation, 2022
Open dielectric waveguide structures such as circular dielectric rods can be used as antennas by leaking energy in the transverse direction or as guiding structures with low loss in integrated circuits at different frequency ranges.
Ersoy Kelebekler
doaj   +1 more source

Anisotropic leaky-like perturbation with subwavelength gratings enables zero crosstalk

open access: yesLight: Science & Applications, 2023
Electromagnetic coupling via an evanescent field or radiative wave is a primary characteristic of light, allowing optical signal/power transfer in a photonic circuit but limiting integration density. A leaky mode, which combines both evanescent field and
Md Faiyaz Kabir   +5 more
doaj   +1 more source

Wide Band Periodic 2D Leaky-Wave Antenna for Millimeter-Wave Application

open access: yesIEEE Access, 2023
A wideband periodic leaky-wave antenna (LWA) is proposed in this paper. By using lossy dielectric material inside the wedge-like guide as medium for wave propagation, a leaky mode is excited and results in widening the bandwidth.
Abdullah Attar   +2 more
doaj   +1 more source

Design and fabrication of an all-dielectric grating with top-hat high diffraction efficiency over a broad spectral range [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2007
Between 98% and 100% flat top efficiency –1st order TE diffraction over a 40 nm wavelength range centered at 800 nm can be obtained by an all-dielectric grating structure where the corrugation is etched in a high index layer unlike in the state of the ...
Lyndin N.   +4 more
doaj   +1 more source

Large Mode Area Single Mode Fiber with a Twisted Polygon-Shaped Core

open access: yesPhotonics, 2022
We present numerical studies on twisted polygon-shaped core fibers for achieving single mode operation with a large mode area propagation in this paper. These large mode area fibers can achieve single mode operation due to twisting-induced high losses to
Kexiong Sun   +4 more
doaj   +1 more source

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

Improved Design of Uniform SIW Leaky Wave Antenna With Suppression of Unwanted Mode

open access: yesIEEE Access, 2021
In this paper, periodic perturbations are employed on the broad wall of a substrate integrated waveguide (SIW) long slot leaky-wave antenna (LWA) to eliminate the excited unwanted mode.
Amin Mahmoodi Malekshah   +2 more
doaj   +1 more source

Investigation of the Leaky-Wave Characteristics of a Cylindrical Dielectric Rod Using the Coefficient Matrix of the System of Characteristic Equations and Davidenko’s Method [PDF]

open access: yesJournal of Electromagnetic Engineering and Science, 2021
An open dielectric waveguide includes both guided propagating modes within the waveguide and radiating and evanescent modes that propagate transversely outside the waveguide.
Ersoy Kelebekler
doaj   +1 more source

Graphene Enhanced Leaky Mode Resonance in Tilted Fiber Bragg Grating: A New Opportunity for Highly Sensitive Fiber Optic Sensor

open access: yesIEEE Access, 2019
Tilted fiber Bragg grating (TFBG) presents many unique spectral characteristics for sensing. The widespread approaches to date are based on the cut-off mode resonance and surface plasmon resonance (SPR), whereas the leaky mode resonance is ignored in the
Zhihong Li   +4 more
doaj   +1 more source

Spontaneous Emission in Leaky Modes of Nanowires

open access: yesSemiconductors, 2022
Analytical expressions for spontaneous emission pro-bability in the vicinity of nanowire for the emitter oriented in axial, radial and azimuthal direction in respect to the nanowire axis, has been obtained. Directionality of emission and probability of emission have been calculated for various positions of emitter.
null Kaliteevski M. A.   +2 more
openaire   +1 more source

Home - About - Disclaimer - Privacy