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Inverse four-wave-mixing and self-parametric amplification effect in optical fibre.


ABSTRACT: An important group of nonlinear processes in optical fibre involves the mixing of four waves due to the intensity dependence of the refractive index. It is customary to distinguish between nonlinear effects that require external/pumping waves (cross-phase modulation and parametric processes such as four-wave mixing) and self-action of the propagating optical field (self-phase modulation and modulation instability). Here, we present a new nonlinear self-action effect, self-parametric amplification (SPA), which manifests itself as optical spectrum narrowing in normal dispersion fibre, leading to very stable propagation with a distinctive spectral distribution. The narrowing results from an inverse four-wave mixing, resembling an effective parametric amplification of the central part of the spectrum by energy transfer from the spectral tails. SPA and the observed stable nonlinear spectral propagation with random temporal waveform can find applications in optical communications and high power fibre lasers with nonlinear intra-cavity dynamics.

SUBMITTER: Turitsyn SK 

PROVIDER: S-EPMC4558939 | biostudies-literature | 2015 Sep

REPOSITORIES: biostudies-literature

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Inverse four-wave-mixing and self-parametric amplification effect in optical fibre.

Turitsyn Sergei K SK   Bednyakova Anastasia E AE   Fedoruk Mikhail P MP   Papernyi Serguei B SB   Clements Wallace R L WR  

Nature photonics 20150901 9


An important group of nonlinear processes in optical fibre involves the mixing of four waves due to the intensity dependence of the refractive index. It is customary to distinguish between nonlinear effects that require external/pumping waves (cross-phase modulation and parametric processes such as four-wave mixing) and self-action of the propagating optical field (self-phase modulation and modulation instability). Here, we present a new nonlinear self-action effect, self-parametric amplificatio  ...[more]

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