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

Sergei K. Turitsyn*, Anastasia E. Bednyakova, Mikhail P. Fedoruk, Serguei B. Papernyi, Wallace R.L. Clements

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


An important group of nonlinear processes in optical fibre involve 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 those arising from 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—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 inverse four-wave mixing, resembling an effective parametric amplification of the central part of the spectrum by energy transfer from the spectral tails. Self-parametric amplification and the observed stable nonlinear spectral propagation with a random temporal waveform can find applications in optical communications and high-power fibre lasers with nonlinear intracavity dynamics.

Original languageEnglish
Pages (from-to)608–614
Number of pages7
JournalNature Photonics
Publication statusPublished - 10 Aug 2015

Bibliographical note

Funding: European Research Council project ULTRALASER (267763); Ministry of Education and Science of the Russian Federation (14.B25.31.0003 and 14.578.21.0029); and the Russian Science Foundation (14-21-00110).

Supplementary information availalbe online.


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