Results 21 to 30 of about 276,203 (321)

Analytic Expressions for Orbital Angular Momentum Modal Crosstalk in a Slightly Elliptical Fiber

open access: yesIEEE Photonics Journal, 2020
Assuming weakly guiding approximation, we examine orbital angular momentum (OAM) mode mixing on account of ellipticity in a fiber and derive a complete set of analytic expressions for spatial crosstalk, using scalar perturbation theory that incorporates ...
Ramesh Bhandari
doaj   +1 more source

Sub‐THz Phase Shifters Enabled by Photoconductive Single‐Walled Carbon Nanotube Layers

open access: yesAdvanced Photonics Research, 2023
Materials with tunable dielectric properties are highly relevant for terahertz (THz) applications. Herein, the tuning of the dielectric response of single‐walled carbon nanotube layers by light illumination is studied for applications to THz phase ...
Serguei Smirnov   +8 more
doaj   +1 more source

Supercontinuum in integrated photonics: generation, applications, challenges, and perspectives

open access: yesNanophotonics, 2023
Frequency conversion in nonlinear materials is an extremely useful solution to the generation of new optical frequencies. Often, it is the only viable solution to realize light sources highly relevant for applications in science and industry.
Brès Camille-Sophie   +5 more
doaj   +1 more source

Silicon-on-Nitride Waveguide With Ultralow Dispersion Over an Octave-Spanning Mid-Infrared Wavelength Range

open access: yesIEEE Photonics Journal, 2012
The proposed silicon-on-nitride (SON) waveguide exhibits an ultrabroadband (4200 nm), low chromatic dispersion in the mid-infrared (MIR) wavelength region from 2430 to 6630 nm. It has two zero-dispersion wavelengths within the span.
Yang Yue   +4 more
doaj   +1 more source

All-optical modulation in a CMOS-compatible amorphous silicon-based device [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2012
Active silicon photonic devices, which dynamically control the flow of light, have received significant attention for their use in on-chip optical networks.
Rao S., D’Addio C., Della Corte F. G.
doaj   +1 more source

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

High-efficiency and easy-to-fabricate integrated plasmonic grating couplers for the telecommunication wavelength range

open access: yesКомпьютерная оптика, 2023
The paper describes results of the numerical simulation and experimental characterization of plasmonic gratings and waveguides in the optical range of 1520 – 1630 nm.
D.S. Zemtsov   +6 more
doaj   +1 more source

Waveguides, bends and Y-junctions with improved transmission and bandwidth in hexagon-type SOI photonic crystal slabs [PDF]

open access: yes, 2005
This paper presents novel ways of implementing waveguide components in photonic crystal slabs based on silicon-on-insulator (SOI). The integration platform we consider consists of hexa¬gonal holes arranged in a triangular lattice (‘hexagon-type’ photonic
Bostan, Cazimir G.   +3 more
core   +2 more sources

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