Results 21 to 30 of about 251,032 (331)

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

Low-loss singlemode PECVD silicon nitride photonic wire waveguides for 532-900 nm wavelength window fabricated within a CMOS pilot line [PDF]

open access: yes, 2013
PECVD silicon nitride photonic wire waveguides have been fabricated in a CMOS pilot line. Both clad and unclad single mode wire waveguides were measured at lambda = 532, 780, and 900 nm, respectively. The dependence of loss on wire width, wavelength, and
Baets, Roel   +14 more
core   +1 more source

Compact Optical Waveguides Based on Hybrid Index and Surface-Plasmon-Polariton Guidance Mechanisms

open access: yesActive and Passive Electronic Components, 2007
Surface-plasmon-polariton (SPP) waveguides made of materials available in nature have, in general, been found to suffer from very high absorption loss when light confinement is beyond diffraction limit.
Min Yan, Min Qiu
doaj   +1 more source

Coupled Strip-Array Waveguides for Integrated Mid-IR Gas Sensing

open access: yesPhotonics, 2023
Non-dispersive infrared (NDIR) absorption spectroscopy is a widespread approach to gas sensing due to its selectivity and conceptual simplicity. One of the main challenges towards the development of fully integrated NDIR sensors is the design and ...
Pooja Thakkar   +12 more
doaj   +1 more source

Propagation Losses of Slotted Photonic Crystal Waveguides

open access: yesIEEE Photonics Journal, 2012
We have fabricated and characterized a set of slotted photonic crystal (SPhC) waveguides in silicon-on-insulator (SOI) with a length of up to 300 $\mu\hbox{m}$ and slot widths ranging between 115 and 145 nm.
A. Di Falco   +5 more
doaj   +1 more source

Patterning of graphene on silicon-on-insulator waveguides through laser ablation and plasma etching [PDF]

open access: yes, 2015
We present the use of femtosecond laser ablation for the removal of monolayer graphene from silicon-on-insulator (SOI) waveguides, and the use of oxygen plasma etching through a metal mask to peel off graphene from the grating couplers attached to the ...
Baert, Kitty   +10 more
core   +2 more sources

Near‐Field Photodetection in Direction Tunable Surface Plasmon Polaritons Waveguides Embedded with Graphene

open access: yesAdvanced Science, 2023
2D materials have manifested themselves as key components toward compact integrated circuits. Because of their capability to circumvent the diffraction limit, light manipulation using surface plasmon polaritons (SPPs) is highly‐valued.
Chia‐Hung Wu   +9 more
doaj   +1 more source

Resemblance between gap waveguides and hollow waveguides [PDF]

open access: yesIET Microwaves, Antennas & Propagation, 2013
There is a lack of suitable numerical ports for the gap waveguides. This study studies the resemblance between the ridge/groove gap waveguide and the conventional hollow ridge/rectangular waveguide, respectively, by using numerical analysis. The dispersion diagrams and characteristic impedances are compared and found to be similar within the stopband ...
Hasan Raza   +3 more
openaire   +2 more sources

Magnetic strip waveguides [PDF]

open access: yesJournal of Physics A: Mathematical and General, 2000
22 pages, a LaTeX source file with three eps ...
Pavel Exner   +3 more
openaire   +5 more sources

Unidirectional reflectionless light propagation at exceptional points

open access: yesNanophotonics, 2017
In this paper, we provide a comprehensive review of unidirectional reflectionless light propagation in photonic devices at exceptional points (EPs).
Huang Yin   +4 more
doaj   +1 more source

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