Results 11 to 20 of about 20,626 (216)

Comparative Study of Coaxial Main Rotor Aerodynamics at Forward Flight Based on Free Wake Model and Unsteady Reynolds- Averaged Navier–Stokes Method [PDF]

open access: yesJournal of Aerospace Technology and Management, 2022
This paper is dedicated to the numerical modeling of the aerodynamic characteristics of the full-scale coaxial main rotor. The modes of forward flight in the range of values V = 30−60 m∙s–1 (108−216 km∙h–1) have been under consideration.
Sergey Gennadievich Konstantinov   +4 more
doaj   +2 more sources

A Tool for the Selection of Food Waste Management Approaches for the Hospitality and Food Service Sector in the UK

open access: yesResources, 2022
The UK government has been calling for action in tackling food waste (FW) generation, to which the Hospitality and Food Services (HaFS) sector contributes substantially.
Spyridoula Gerassimidou   +2 more
doaj   +1 more source

Polarization-independent wavelength conversion at 2.5 Gb/s by dual-pump four-wave mixing in a strained semiconductor optical amplifier [PDF]

open access: yes, 1996
We give a general expression for the polarization dependence of the four-wave mixing (FWM) efficiency in the dual-pump configuration. This expression, along with some general properties of the FWM susceptibility tensor, is used to propose a simple scheme
Geraghty, David F.   +4 more
core   +1 more source

Coherent Control of Perfect Optical Vortex Through Four-Wave Mixing in an Asymmetric Semiconductor Double Quantum Well

open access: yesFrontiers in Physics, 2022
A scheme for the coherent control of perfect optical vortex (POV) in an asymmetric semiconductor double quantum well (SDQW) nanostructure is proposed by exploiting the tunneling-induced highly efficient four-wave mixing (FWM).
Xu Deng, Tao Shui, Wen-Xing Yang
doaj   +1 more source

Wavelength conversion at 10 Gb/s by four-wave mixing over a 30-nm interval [PDF]

open access: yes, 1998
We show that the use of a long semiconductor optical amplifier increases the error-free conversion interval of a four-wave mixing (FWM)-based wavelength converter.
D'Ottavi, A.   +6 more
core   +1 more source

Sensitivity Enhancement for Fiber Bragg Grating Sensors by Four Wave Mixing

open access: yesPhotonics, 2015
All-optical signal processing based on four wave mixing (FWM) in a highly nonlinear fiber (HNLF) to enhance the sensitivity of a fiber sensor is demonstrated and comprehensively reviewed in this paper.
Jiangbing Du   +4 more
doaj   +1 more source

FWM Mitigation in DWDM Optical Networks

open access: yesJournal of Physics: Conference Series, 2020
Abstract In this paper, three optical communication systems have been proposed to mitigate Four Wave Mixing (FWM). Three techniques are used, namely; low input power with high gain amplifier, a collective Optical Time Division Multiplexing (OTDM) and Dense Wavelength Division Multiplexing (DWDM) system, and the use of alternative ...
Habib Ullah Manzoor   +3 more
openaire   +1 more source

Impact of nonlocal response in plasmonic metasurfaces on four-wave mixing

open access: yesNew Journal of Physics, 2021
We report the impact of nonlocal response in metallic nanostructures on four-wave mixing (FWM) process in nonlinear plasmonic metasurfaces which consist of Au nanostrips coupled with Au film spaced by an ultrathin dielectric film.
Zhongshuai Zhang   +3 more
doaj   +1 more source

Performance Analysis of the Four-Wave Mixing Effect with Various Tapered Fiber Waist Diameters

open access: yesPhotonics, 2023
In this work, we report the use of different waist diameters of tapered fiber to generate a four-wave mixing (FWM) effect. The FWM conversion efficiencies obtained from the tapered fiber with 10 µm, 20 µm, and 30 µm waist diameters were −37.81 dB, −38.50
Harith Ahmad   +5 more
doaj   +1 more source

Potentials and limitations of Integra® flowable wound matrix seeded with adipose tissue-derived microvascular fragments [PDF]

open access: yesEuropean Cells & Materials, 2017
Adipose tissue-derived microvascular fragments (ad-MVF) represent promising vascularisation units for bioengineered Integra® matrix wound dressing (MWD).
T Später   +3 more
doaj   +1 more source

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