Results 31 to 40 of about 2,268,510 (290)
Backside emission leaky-mode modulators
Optics 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
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Phase of Topological Lattice with Leaky Guided Mode Resonance
Nanomaterials, 2023 Topological nature in different areas of physics and electronics has often been characterized and controlled through topological invariants depending on the global properties of the material.
Heejin Choi +4 more
doaj +1 more source
The Astrophysical Journal Letters, 2023 Magnetohydrodynamic (MHD) waves are often invoked to interpret quasiperiodic pulsations (QPPs) in solar flares. We study the response of a straight flare loop to a kink-like velocity perturbation using three-dimensional MHD simulations and forward model ...
Mijie Shi +4 more
doaj +1 more source
Analysis and Design of Tunable THz 1-D Leaky-Wave Antennas Based on Nematic Liquid Crystals
Applied Sciences, 2022 The tunable properties of nematic liquid crystals (NLC) are here exploited in a peculiar leaky waveguide with artificial magnetic conductors as the lateral walls, a bottom metal ground plane, and a homogenized metasurface on top to obtain dynamic ...
Walter Fuscaldo +5 more
doaj +1 more source
Large mode area leaky optical fiber fabricated by MCVD [PDF]
, 2011 Manuscript : 17 pages, 3 figuresInternational audienceA large mode area single-mode optical fiber based on leaky mode filtering has been prepared by modified chemical vapor deposition (MCVD) technique.
Dussardier, Bernard +7 more
core +1 more source
High-efficiency wide-band metal-dielectric resonant grating for 20 fs pulse compression [PDF]
Journal of the European Optical Society-Rapid Publications, 2007 More than 95% average efficiency TE-polarisation diffraction over a 200 nm wavelength range centred at 800 nm is obtained by a metal-dielectric grating structure with non-corrugated mirror.
Flury M. +4 more
doaj +1 more source
Leaky modes in multilayer uniaxial optical waveguides [PDF]
Applied Optics, 1990 The propagation characteristics of the leaky modes in planar anisotropic waveguides with a multilayer structure have been investigated by means of a compact rigorous formalism. The leakage losses and leaky transition angle have been studied for the fundamental and first hybrid modes.
Torner Sabata, Lluís +2 more
openaire +5 more sources
On the interplay of waveguide modes and leaky modes in corrugated OLEDs
Optics Express, 2011 Bragg gratings incorporated into organic light-emitting diodes (OLEDs) establish a coupling between waveguide modes and useful light (leaky modes). Here we demonstrate that the net coupling direction depends on the OLED stack design. We fabricated two different device structures with gold Bragg gratings.
Hauss, J. +4 more
openaire +4 more sources
Influence of Subwavelength Grating Asymmetry on Long-Wavelength Infrared Transmittance Filters
IEEE 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
Leaky mode expansion for optical fibre sensor application [PDF]
, 2021 A multimode interference (MMI) based sensor for high refractive index sensing was proposed and demonstrated in this simulation work. The proposed sensor scheme works by a mode expansion according to leaky modes instead of traditionally used radiation ...
Alqazouin, Fouziyah Abdulsalam Hamid
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