Results 11 to 20 of about 1,025,521 (291)

Self-Aligned Emission of Distributed Feedback Lasers on Optical Fiber Sidewall

open access: yesNanomaterials, 2021
This article assembles a distributed feedback (DFB) cavity on the sidewalls of the optical fiber by using very simple fabrication techniques including two-beam interference lithography and dip-coating. The DFB laser structure comprises graduated gratings
Tianrui Zhai   +7 more
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

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

Finite size effects in the dynamics of glass-forming liquids [PDF]

open access: yes, 2012
We present a comprehensive theoretical study of finite size effects in the relaxation dynamics of glass-forming liquids. Our analysis is motivated by recent theoretical progress regarding the understanding of relevant correlation length scales in liquids
Cristina Toninelli   +9 more
core   +4 more sources

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

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 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

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

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

Mode Coupling in Quantized High Quality Films [PDF]

open access: yes, 2005
The effect of coupling of quantized modes on transport and localization in ultrathin films with quantum size effect (QSE) is discussed. The emphasis is on comparison of films with Gaussian, exponential, and power-law long-range behavior of the ...
A. E. Meyerovich   +10 more
core   +3 more sources

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