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Multi-scale polarisation phenomena
KTH, School of Information and Communication Technology (ICT), Materials- and Nano Physics, Optics and Photonics, OFO.
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2016 (English)In: LIGHT-SCIENCE & APPLICATIONS, ISSN 2047-7538, Vol. 5, e16011Article in journal (Refereed) PublishedText
Abstract [en]

Multi-scale methods that separate different time or spatial scales are among the most powerful techniques in physics, especially in applications that study nonlinear systems with noise. When the time scales (noise and perturbation) are of the same order, the scales separation becomes impossible. Thus, the multi-scale approach has to be modified to characterise a variety of noise-induced phenomena. Here, based on stochastic modelling and analytical study, we demonstrate in terms of the fluctuation-induced phenomena and Hurst R/S analysis metrics that the matching scales of random birefringence and pump-signal states of polarisation interaction in a fibre Raman amplifier results in a new random birefringence-mediated phenomenon, which is similar to stochastic anti-resonance. The observed phenomenon, apart from the fundamental interest, provides a base for advancing multi-scale methods with application to different coupled nonlinear systems ranging from lasers (multimode, mode-locked, random, etc.) to nanostructures (light-mediated conformation of molecules and chemical reactions, Brownian motors, etc.).

Place, publisher, year, edition, pages
CHINESE ACAD SCIENCES , 2016. Vol. 5, e16011
Keyword [en]
fibre Raman amplifier, multi-scale methods, polarisation, stochastic calculations
National Category
Atom and Molecular Physics and Optics
URN: urn:nbn:se:kth:diva-183215DOI: 10.1038/lsa.2016.11ISI: 000369328900006OAI: diva2:908878

QC 20160303

Available from: 2016-03-03 Created: 2016-03-03 Last updated: 2016-03-03Bibliographically approved

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Popov, Sergei
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