Results 11 to 20 of about 1,019,487 (291)

Modal Coupling in Presence of Dry Friction

open access: yesMachines, 2018
In this paper, we analyze the behavior of a single pad system in the presence of dry friction. The goal is to investigate the path that leads a stable mechanical system to unstable behavior.
Marco Claudio De Simone, Domenico Guida
doaj   +1 more source

Selection Rules for Resonant Longitudinal Injector-Coupling in Experimental Rocket Combustors

open access: yesAerospace, 2022
This paper investigates different types of longitudinal mode coupling in subscale rocket combustion chambers using experimental data and numerical simulations.
Tim Horchler
doaj   +1 more source

Coupling between guided modes of two parallel nanofibers

open access: yesNew Journal of Physics, 2020
We study the coupling between the fundamental guided modes of two identical parallel nanofibers analytically and numerically. We calculate the coefficients of directional coupling, butt coupling, and self coupling as functions of the fiber radius, the ...
Fam Le Kien   +3 more
doaj   +1 more source

Mode-Coupling Induced Crosstalk Optimization in a Graded-Index Six-Mode Fiber

open access: yesIEEE Photonics Journal, 2022
We thoughtfully investigate the feasibility of reducing the mode-coupling caused crosstalk by optimizing the practical parameters of the few-mode fiber (FMF), based on the linear coupling theory. According to our simulation results, the low crosstalk FMF
Tianfeng Zhao   +4 more
doaj   +1 more source

Mode Coupling Properties of the Plasmonic Dimers Composed of Graphene Nanodisks

open access: yesApplied Sciences, 2017
The electromagnetic properties of the plasmonic dimer composed of coupled graphene nanodisks are numerically investigated in this paper. The results demonstrate that the degeneracy of the plasmonic modes of the dimer is lifted when the coupling is ...
Houbo Chen   +7 more
doaj   +1 more source

Efficient slow-light coupling in a photonic crystal waveguide without transition region [PDF]

open access: yes, 2008
We consider the coupling into a slow mode that appears near an inflection point in the band structure of a photonic crystal waveguide. Remarkably, the coupling into this slow mode, which has a group index n(g) > 1000, can be essentially perfect without ...
Botten, L. C.   +4 more
core   +1 more source

High Efficiency Coupling Technology of Silicon Photonic Modulator and Single-Mode Optical Fiber

open access: yesGuangtongxin yanjiu, 2021
Due to the small mode field of silicon photonic chips, the large coupling loss is a road-blocker for their applications. In this work, the coupling efficiency between a silicon photonic modulator chip and a single-mode optical fiber is investigated.
Zhong-xiang TAN   +5 more
doaj   +1 more source

Mode coupling control in a resonant device: application to solid-state ring lasers [PDF]

open access: yes, 2006
A theoretical and experimental investigation of the effects of mode coupling in a resonant macro- scopic quantum device is achieved in the case of a ring laser. In particular, we show both analytically and experimentally that such a device can be used as
A. Siegman   +12 more
core   +3 more sources

Polarization-maintaining terahertz anti-resonant fibers based on mode couplings between core and cladding

open access: yesResults in Physics, 2021
This study numerically investigated the index-induced mode coupling between the fundamental mode in core and the fundamental mode in cladding tubes in THz anti-resonant fibers (ARFs), and then, this index-induced mode coupling was applied for designing ...
Shuai Sun   +8 more
doaj   +1 more source

Dynamics of the pedestal in the recovery phase in EAST type-I ELM plasmas

open access: yesNuclear Fusion, 2023
In the Experimental Advanced Superconducting Tokamak high-confinement mode plasmas, a low-frequency n = 1 magnetic coherent mode with frequency f = 20–50 kHz and a high-frequency mode with electromagnetic characteristics (HFEM, f ∼ 280 kHz) have been ...
H. Zhou   +10 more
doaj   +1 more source

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