Results 161 to 170 of about 220,487 (206)

Waveguide slot applicators for microwave heating

17th International Conference on Applied Electromagnetics and Communications, 2003. ICECom 2003., 2004
In this paper we present an empirical procedure to design microwave slot array applicators for heating lossy dielectric slabs. To this end, a commercial simulation code has been used to characterize the behaviour of a slot radiating on a dielectric slab with a given complex permittivity.
V. CASTRILLO, CHIADINI, FRANCESCO, G. DAMBROSIO, V. FIUMARA, R. MASSA, G. PANARIELLO, I. M. PINTO, SCAGLIONE, Antonio   +7 more
openaire   +6 more sources

Slot and Layer-Slot Waveguide in the Visible Spectrum

Journal of Lightwave Technology, 2011
Slot waveguides based on TiO2 nanowires are numerically analyzed in the visible spectrum. The modal properties and the sensing capabilities of a conventional slot waveguide are investigated at an operating wavelength of 635 nm. Furthermore, a novel slot waveguide configuration called Layer-slot (L-slot) is proposed and discussed.
Testa G, Bernini R
openaire   +4 more sources

Suppression of slot mode in slotted waveguide antennas

IEEE Transactions on Antennas and Propagation, 1975
It has been found experimentally that the efficiency of radiation of the slot mode in slotted waveguide antennas increases with the slot width. The excitation of the slot mode can be prevented by covering the slot with a thin film of metal. Alternatively, the slot may be covered with a sheet of dielectric to suppress the slot mode.
R. Garg, K. Gupta
openaire   +1 more source

Plasmonic Slot Waveguides with Core Nonlinearity

Plasmonics, 2013
We analytically study the interplay between group velocity dispersion and material dispersion due to femtosecond ultrafast pulse inside plasmonic slot waveguides with nonlinear dielectric core. The analytic investigation of the role of the core nonlinearity on pulse propagation has been investigated. Interestingly, our model shows that the focusing and
Sherif A. Tawfik, Mohamed A. Swillam
openaire   +1 more source

Strip-loaded horizontal slot waveguide

Optics Letters, 2017
We introduce a novel concept for an optical waveguide called a strip-loaded slot waveguide. It allows an extraordinary confinement of the field in a waveguide with an extremely tiny (vertical) cross section. Unlike conventional slot waveguides, the proposed configuration has potential for very low propagation losses.
Bera Arijit, Vartiainen Ismo, Laukkanen Janne, Ahmadi Leila, Kuittinen Markku, Häyrinen Markus, Roussey Matthieu, Pelisset Ségolène, Honkanen Seppo, Kontturi Ville   +9 more
openaire   +2 more sources

Lossless strip-to-slot waveguide transformer

Optics Letters, 2007
We present a highly efficient integratable waveguide transformer that is capable of converting Gaussian-like waveguide modes to much more complicated non-Gaussian-like slot-waveguide modes, and vice versa. The structure consists of several pairs of complementary tapers capable of making this mode conversion virtually lossless.
Ning-Ning, Feng, Rong, Sun, Lionel C, Kimerling, Jurgen, Michel   +3 more
openaire   +2 more sources

TEM-modes In Slot-coupled Waveguides

27th European Microwave Conference and Exhibition, 1997
TEM-modes which are usually expressed in terms of a scalar electric potential o are shown to be derivable from a scalar magnetic potential ? if the supporting transmission line can be considered a slot coupled waveguide with more than one coupling slot.
A.S. Omar, C. Rieckmann, A. Jostingmneier   +2 more
openaire   +1 more source

Silicon slot waveguide Fano resonator

Optics Letters, 2018
The growing interest for Fano resonators during the past decade is due to the narrow line shape observable in their optical spectra. The drastic phase shift occurring at the resonance yields a steep drop from a high to low amplitude. Fano resonances can be obtained by a combination of nanostructures.
Bera Arijit, Kuittinen Markku, Roussey Matthieu, Honkanen Seppo   +3 more
openaire   +2 more sources

NOEMS devices based on Slot-Waveguides

2007 Conference on Lasers and Electro-Optics (CLEO), 2007
We present device applications for Nano-Opto-Electro-Mechanical System (NOEMS) structures based on the evanescent-wave bonding acting on silicon slot-waveguides. Useful all- optical or electrooptical functionalities include: phase modulation, polarization mode dispersion, near-field probing and reconfigurable optical delay.
Vilson R. Almeida, Roberto R. Panepucci
openaire   +1 more source

A polarization-agile waveguide slot antenna

IEEE Antennas and Propagation Society International Symposium. Digest. Held in conjunction with: USNC/CNC/URSI North American Radio Sci. Meeting (Cat. No.03CH37450), 2004
We present a new waveguide slot configuration able to radiate a circular polarization with a very low axial ratio. Both LH and RH circular polarization can be independently obtained, and therefore this configuration can be used as a polarization agile antenna.
MONTISCI, GIORGIO, MAZZARELLA, GIUSEPPE, MUSA M.   +2 more
openaire   +2 more sources