About: Modulational instability

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In the fields of nonlinear optics and fluid dynamics, modulational instability or sideband instability is a phenomenon whereby deviations from a periodic waveform are reinforced by nonlinearity, leading to the generation of spectral-sidebands and the eventual breakup of the waveform into a train of pulses.

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rdf:type	yago:WikicatWaterWaves yago:Abstraction100002137 yago:Event100029378 yago:Happening107283608 yago:Movement107309781 yago:PsychologicalFeature100023100 yago:YagoPermanentlyLocatedEntity disease yago:Wave107352190
rdfs:label	Instabilité modulationnelle (fr) Modulational instability (en)
rdfs:comment	In the fields of nonlinear optics and fluid dynamics, modulational instability or sideband instability is a phenomenon whereby deviations from a periodic waveform are reinforced by nonlinearity, leading to the generation of spectral-sidebands and the eventual breakup of the waveform into a train of pulses. (en) En optique non linéaire et en dynamique des fluides, l'instabilité de modulation ou instabilité modulationnelle est un effet de renforcement, par la non-linéarité, d'une déformation d'une onde périodique, menant à la génération de bandes de gain dans le spectre fréquentiel. Elle peut entraîner la rupture de l'onde en un train d'impulsions. (fr)
dct:subject	Fluid dynamic instabilities Nonlinear optics Photonics Water waves
Wikipage page ID	23602727 (xsd:integer)
Wikipage revision ID	1109324117 (xsd:integer)
Link from a Wikipage to another Wikipage	Amplifier Rogue wave Optical amplifier Complex number Wavenumber Oscillation Analytical expression Slowly varying envelope approximation Stokes wave Complex conjugate Kerr effect Perturbation theory Fluid dynamic instabilities Wave packet Dispersion relation Gain (electronics) Nonlinear optics Fluid dynamics Angular frequency Frequency spectrum Group velocity Photonics Water waves Imaginary unit Carrier wave Real number Refractive index Wavelength Exponential growth Imaginary number Nonlinear Schrödinger equation Nonlinear optics Periodic function Kerr nonlinearity Surface gravity wave T. Brooke Benjamin Wave phase
Link from a Wikipage to an external page	http://www.math.umass.edu/~kevrekid/math697/sdarticle_ZO.pdf
sameAs	Modulational instability Modulational instability Modulational instability Modulational instability Modulational instability
dbp:wikiPageUsesTemplate	dbt:Cite_journal dbt:Dead_link dbt:Pad dbt:Reflist dbt:Short_description dbt:Physical_oceanography
bot	InternetArchiveBot (en)
date	April 2020 (en)
fix-attempted	yes (en)
has abstract	In the fields of nonlinear optics and fluid dynamics, modulational instability or sideband instability is a phenomenon whereby deviations from a periodic waveform are reinforced by nonlinearity, leading to the generation of spectral-sidebands and the eventual breakup of the waveform into a train of pulses. It is widely believed that the phenomenon was first discovered − and modeled − for periodic surface gravity waves (Stokes waves) on deep water by T. Brooke Benjamin and Jim E. Feir, in 1967. Therefore, it is also known as the Benjamin−Feir instability. However, spatial modulation instability of high-power lasers in organic solvents was observed by Russian scientists N. F. Piliptetskii and A. R. Rustamov in 1965, and the mathematical derivation of modulation instability was published by V. I. Bespalov and V. I. Talanov in 1966. Modulation instability is a possible mechanism for the generation of rogue waves. (en) En optique non linéaire et en dynamique des fluides, l'instabilité de modulation ou instabilité modulationnelle est un effet de renforcement, par la non-linéarité, d'une déformation d'une onde périodique, menant à la génération de bandes de gain dans le spectre fréquentiel. Elle peut entraîner la rupture de l'onde en un train d'impulsions. Ce phénomène a été historiquement découvert et modélisé pour les ondes de gravité en eau profonde par T. Brooke Benjamin et Jim E. Feir en 1967. Il est par conséquent aussi connu sous le nom d' instabilité de Benjamin-Feir. C'est un mécanisme possible pour la génération de vagues scélérates. (fr)
gold:hypernym	Phenomenon
prov:wasDerivedFrom	wikipedia-en:Modulational_instability?oldid=1109324117&ns=0
page length (characters) of wiki page	12799 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:Modulational_instability
is Link from a Wikipage to another Wikipage of	Rogue wave Index of physics articles (M) Instability Benjamin–Feir instability Kerr effect Plasma stability Silicon photonics Sedleian Professor of Natural Philosophy Autocatalysis Photon Filament propagation Self-phase modulation Self-focusing Nonlinear optics Outline of oceanography Zero-dispersion wavelength Benjamin-Feir instability Side-band instability Sideband instability Benjamin−Feir instability Modulation instabilities Modulation instability Modulational instabilities

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