Results 51 to 60 of about 418,956 (371)
A 3-D-Printed W-Band Slotted Waveguide Array Antenna Optimized Using Machine Learning
IEEE Antennas and Wireless Propagation Letters, 2018 A three-dimensional (3-D) printed W-band slotted waveguide array antenna (SWAA) is proposed. The proposed SWAA consists of three different sections (two horizontal ones and a vertical one) such as a radiating waveguide array with 10 × 10 slots array with
J. Tak +3 more
semanticscholar +1 more source
Hybrid graphene plasmonic waveguide modulators [PDF]
Nature Communications, 2015 The unique optical and electronic properties of graphene make possible the fabrication of novel optoelectronic devices. One of the most exciting graphene characteristics is the tunability by gating which allows one to realize active optical devices ...
D. Ansell +10 more
semanticscholar +1 more source
Quantum waveguides with corners [PDF]
ESAIM: Proceedings, 2012 The simplest modeling of planar quantum waveguides is the Dirichlet eigenproblem for the Laplace operator in unbounded open sets which are uniformly thin in one direction. Here we consider V-shaped guides. Their spectral properties depend essentially on a sole parameter, the opening of the V.
Dauge, Monique +2 more
openaire +5 more sources
Stability of the magnetic Schrödinger operator in a waveguide [PDF]
Commun. in Part. Diff. Eq. 30 (2005) 539-565, 2004 The spectrum of the Schr\"odinger operator in a quantum waveguide is known to be unstable in two and three dimensions. Any enlargement of the waveguide produces eigenvalues beneath the continuous spectrum. Also if the waveguide is bent eigenvalues will arise below the continuous spectrum. In this paper a magnetic field is added into the system.
arxiv +1 more source
Chirality of nanophotonic waveguide with embedded quantum emitter for unidirectional spin transfer [PDF]
Nature Communications, 2015 Scalable quantum technologies may be achieved by faithful conversion between matter qubits and photonic qubits in integrated circuit geometries. Within this context, quantum dots possess well-defined spin states (matter qubits), which couple efficiently ...
R. J. Coles +8 more
semanticscholar +1 more source
Radio Science, 2003 We investigate the propagation of electromagnetic waves in a cylindrical waveguide with an arbitrary cross section filled with a nonlinear material. The electromagnetic field is expanded in the usual eigenmodes of the waveguide, and the coupling between the modes is quantified.
openaire +2 more sources
Conditions for waveguide decoupling in square-lattice photonic crystals [PDF]
J. Appl. Phys. 96, 4039 (2004), 2004 We study coupling and decoupling of parallel waveguides in two-dimensional square-lattice photonic crystals. We show that the waveguide coupling is prohibited at some wavelengths when there is an odd number of rows between the waveguides. In contrast, decoupling does not take place when there is even number of rows between the waveguides.
arxiv +1 more source
Near-unity coupling efficiency of a quantum emitter to a photonic crystal waveguide. [PDF]
Physical Review Letters, 2014 A quantum emitter efficiently coupled to a nanophotonic waveguide constitutes a promising system for the realization of single-photon transistors, quantum-logic gates based on giant single-photon nonlinearities, and high bit-rate deterministic single ...
M. Arcari +10 more
semanticscholar +1 more source
FGF14 GAA Intronic Expansion in Unsolved Adult‐Onset Ataxia in the Care4Rare Canada Consortium
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Background and Objectives Spinocerebellar ataxias (SCA) represent a clinically and genetically heterogeneous group of progressive neurodegenerative diseases with prominent cerebellar atrophy. Recently, a novel pathogenic repeat expansion in intron 1 of FGF14 was identified, causing adult‐onset SCA (SCA27B). We aimed to determine the proportion
Alexanne Cuillerier +20 more
wiley +1 more source
Waveguide sub‐wavelength structures: a review of principles and applications
, 2015 Periodic structures with a sub‐wavelength pitch have been known since Hertz conducted his first experiments on the polarization of electromagnetic waves.
R. Halir +10 more
semanticscholar +1 more source