Results 41 to 50 of about 530,378 (278)

Giant Birefringence of Periodic Dielectric Waveguides

open access: yesIEEE Photonics Journal, 2011
The giant (Δn >; 1.5) and broadband achromatic birefringence is realized by periodic dielectric waveguides (PDWs), which benefit from low loss transmission, compact size, and simple structure.
Wenfu Zhang   +3 more
doaj   +1 more source

Nonlocal response in plasmonic waveguiding with extreme light confinement

open access: yesNanophotonics, 2013
We present a novel wave equation for linearized plasmonic response, obtained by combining the coupled real-space differential equations for the electric field and current density.
Toscano Giuseppe   +8 more
doaj   +1 more source

Compact Single-Mode Silicon Hybrid Rib/Strip Waveguide With Adiabatic Bends

open access: yesIEEE Photonics Journal, 2011
We report a low-loss, hybrid silicon waveguide geometry that consists of straight rib sections with a propagation loss of 0.27 ± 0.012 dB/cm and compact photonic wire bends.
W. Bogaerts, S. K. Selvaraja
doaj   +1 more source

A Novel Photonic Material for Designing Arbitrarily Shaped Waveguides in Two Dimensions [PDF]

open access: yes, 2003
We investigate numerically optical properties of novel two-dimensional photonic materials where parallel dielectric rods are randomly placed with the restriction that the distance between rods is larger than a certain value. A large complete photonic gap
Hase, Masashi   +4 more
core   +3 more sources

Biocompatible and Implantable Optical Fibers and Waveguides for Biomedicine

open access: yesMaterials, 2018
Optical fibers and waveguides in general effectively control and modulate light propagation, and these tools have been extensively used in communication, lighting and sensing.
Roya Nazempour   +3 more
semanticscholar   +1 more source

Design of waveguides, bends and splitters in photonic crystal slabs with hexagonal holes in a triangular lattice [PDF]

open access: yes, 2005
Waveguides in photonic crystal slabs (PCS) can be obtained by omitting a row of holes (W1-waveguides). In general the propagation properties in such waveguides suffer from the unavoidable periodic sidewall corrugation caused by the remaining parts of the
Bostan, Cazimir G., Ridder, René M. de
core   +3 more sources

Surface plasmon polariton modes in coaxial metal-dielectric-metal waveguides

open access: yesNew Journal of Physics, 2016
We explore the optical properties of a coaxial plasmonic metamaterial consisting of hollow dielectric cylinders with a diameter of 100–250 nm and a ring wall width of 10–50 nm, embedded in metal.
Marie Anne van de Haar   +3 more
doaj   +1 more source

Dielectric Sensors Based on Electromagnetic Energy Tunneling

open access: yesSensors, 2015
We show that metallic wires embedded in narrow waveguide bends and channels demonstrate resonance behavior at specific frequencies. The electromagnetic energy at these resonances tunnels through the narrow waveguide channels with almost no propagation ...
Omar Siddiqui   +2 more
doaj   +1 more source

Bioabsorbable polymer optical waveguides for deep-tissue photomedicine

open access: yesNature Communications, 2016
Advances in photonics have stimulated significant progress in medicine, with many techniques now in routine clinical use. However, the finite depth of light penetration in tissue is a serious constraint to clinical utility. Here we show implantable light-
S. Nizamoglu   +10 more
semanticscholar   +1 more source

New silicon photonics integration platform enabled by novel micron-scale bends

open access: yes, 2013
Even though submicron silicon waveguides have been proposed for dense integration of photonic devices, to date the lightwave circuits on the market mainly rely on waveguides with micron-scale core dimensions.
Aalto, Timo   +4 more
core   +1 more source

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