Results 41 to 50 of about 486,399 (248)
3 × 3 slot waveguide crossing based on Maxwell’s fisheye lens [PDF]
Optical Engineering: The Journal of SPIE, 2019 . Intersection of two or more silicon slot waveguides is inevitable in modern optical integrated circuits based on a silicon-on-insulator platform. We design a Maxwell’s fisheye lens as the crossing medium for three Si slot waveguides and numerically ...
S. H. Badri +3 more
semanticscholar +1 more source
Longitudinal Shunt Slot Excitation by Wiggly Ridge Substrate Integrated Waveguide [PDF]
Journal of Intelligent Procedures in Electrical Technology, 2014 Application of a substrate integrated waveguide with wiggly ridge shape is presented for excitation longitudinal shunt slot antenna. Two main design equations for design substrate integrated waveguide structure and get parameters of structures, for ...
Mehdi Salemi +2 more
doaj
Towards a millivolt optical modulator with nano-slot waveguides [PDF]
, 2007 We describe a class of modulator design involving slot waveguides and electro-optic polymer claddings. Such geometries enable massive enhancement of index tuning when compared to more conventional geometries.
Baehr-Jones, Thomas +6 more
core +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
Investigation of Hybrid Silicon-Nitride/Polymer Waveguides for Second-Harmonic Generation
IEEE Photonics Journal, 2019 We propose a hybrid silicon-nitride (Si3N4 or SiN for short)/nonlinear polymer waveguide to achieve second-harmonic generation of an input 1550 nm signal by modal phase-matching between zero-order spatial mode at 1550 nm and second ...
Subrata Das +4 more
doaj +1 more source
Ultrabroadband Compact Graphene–Silicon TM-Pass Polarizer
IEEE Photonics Journal, 2017 Graphene is treated as an anisotropic material because it is one atom thick and its π electrons cause electric conduction in its plane. Based on the polarization-dependent absorption, we design compact broadband transverse-magnetic (TM)-pass ...
Xiao Hu, Jian Wang
doaj +1 more source
Enhanced spontaneous raman signal collected evanescently by silicon nitride slot waveguides [PDF]
, 2015 We investigate the effect of waveguide geometry on the conversion efficiency of Raman signals collected by integrated photonic waveguides. Compared to strip-type photonic wires, we report a six-fold increase in conversion efficiency for silicon-nitride ...
Baets, Roel +4 more
core +2 more sources
A Tunable Dispersion Waveguide Based on Graphene–Silicon Lateral Slot Geometric Structure
IEEE Photonics Journal, 2017 The dispersion profiles of a hybrid graphene–silicon (HyGS) slot waveguide with trilayers of graphene are investigated in this paper. By tuning the bias voltage on graphene layer, the zero dispersion wavelengths (ZDW) of HyGS slot waveguide can be
Zhen Li +4 more
doaj +1 more source
Optical Field Enhancement in Nanoscale Slot Waveguides of Hyperbolic Metamaterials
, 2012 Nanoscale slot waveguides of hyperbolic metamaterials are proposed and demonstrated for achieving large optical field enhancement. The dependence of the enhanced electric field within the air slot on waveguide mode coupling and permittivity tensors of ...
Alekseyev +16 more
core +1 more source
Optimization of a horizontal slot waveguide biosensor to detect DNA hybridization [PDF]
, 2015 A full-vectorial H-field formulation-based finite element approach is used to optimize a biosensor structure incorporating a horizontal slot waveguide. It is designed to detect DNA hybridization through the change of the effective index of the waveguide ...
Almeida +30 more
core +1 more source