Results 31 to 40 of about 12,122 (206)
Focused-ion-beam fabrication of slots in silicon waveguides and ring resonators [PDF]
, 2008 We present the focused-ion-beam fabrication of slots in silicon waveguides and racetrack resonators. The silicon waveguides and resonators were pre-fabricated without slot with deep-UV lithography.
Baets, Roel +3 more
core +2 more sources
Light trapping beyond the 4n^2 limit in thin waveguides [PDF]
, 2012 We describe a method for determining the maximum absorption enhancement in thin film waveguides based on optical dispersion relations. For thin film structures that support one, well-confined guided mode, we find that the absorption enhancement can ...
Atwater, Harry A. +2 more
core +1 more source
Modeling of Slot Waveguide Sensors Based on Polymeric Materials
Sensors, 2011 Slot waveguides are very promising for optical sensing applications because of their peculiar spatial mode profile. In this paper we have carried out a detailed analysis of mode confinement properties in slot waveguides realized in very low refractive ...
Lorenzo Pavesi +5 more
doaj +1 more source
Efficiency of evanescent excitation and collection of spontaneous Raman scattering near high index contrast channel waveguides [PDF]
, 2015 info:eu-repo/semantics ...
Baets, Roel +6 more
core +1 more source
Electronics Letters, 1997 A waveguide slot element, excited by a thin strip, printed and kept behind the slot is presented. The slot is vertical and non-wrap around, whereas the strip is inclined with respect to the slot or takes an L-shape. The strip and the slot are printed simultaneously on a dielectric substrate and replaces the narrow wall of the guide.
S. Apu, M. Sachidananda
openaire +1 more source
Sensors, 2012 Slot waveguides are becoming more and more attractive optical components, especially for chemical and bio-chemical sensing. In this paper an accurate analysis of slot waveguide fabrication tolerances is carried out, in order to find optimum design ...
Vittorio M. N. Passaro, Mario La Notte
doaj +1 more source
Analysis of enhanced stimulated Brillouin scattering in silicon slot waveguides [PDF]
, 2013 Stimulated Brillouin scattering has attracted renewed interest with the promise of highly tailorable integration into the silicon photonics platform. However, significant Brillouin amplification in silicon waveguides has yet to be shown.
Baets, Roel +3 more
core +3 more sources
Coupling Thermal Atomic Vapor to Slot Waveguides
Physical Review X, 2018 We study the interaction of thermal rubidium atoms with the guided mode of slot waveguides integrated in a vapor cell. Slot waveguides provide strong confinement of the light field in an area that overlaps with the atomic vapor.
Ralf Ritter +7 more
doaj +1 more source
IEEE Access, 2020 In this paper, an 8 × 2-element 60-GHz band circularly polarized post-wall waveguide slot array antenna loaded with dipoles is proposed. The antenna is composed of a feeding circuit, radiating slots on radiating waveguides, and dipoles for ...
Takashi Tomura +2 more
doaj +1 more source
Efficient terahertz slot-line waveguides
Optics Express, 2011 We present two solutions to the challenge of radiation loss of slot-lines at terahertz frequencies: using a slot-line in a homogeneous medium, and using a slot-line on a layered substrate. A theoretical analysis of the slot-line in a homogeneous medium as a terahertz transmission line is presented. The absorption coefficient is obtained in terms of the
Hamid, Pahlevaninezhad +2 more
openaire +2 more sources