Self-Organized Instability In Graded-Index Multimode Fibres

Abstract

Multimode fibres (MMFs) are attracting interest in the study of spatiotemporal dynamics as well as in the context of ultrafast fibre sources, imaging and telecommunications. This interest stems from three differences compared with single-mode fibre structures: their spatiotemporal complexity (information capacity), the role of disorder, and their complex intermodal interactions. To date, MMFs have been studied in limiting cases in which one or more of these properties can be neglected. Here, we study a regime in which all these elements are integral. We observe a spatial beam-cleaning phenomenon that precedes spatiotemporal modulation instability. We provide evidence that the origin of these processes is a universal unstable attractor in graded-index MMFs. The self-organization and instability of the attractor are both caused by intermodal interactions characterized by cooperating disorder, nonlinearity and dissipation. Disorder-enhanced nonlinear processes in MMFs have important implications for future telecommunications, and the multifaceted nature of the considered dynamics showcases MMFs as potential laboratories for a variety of topics in complexity science.

Publication Date

11-29-2016

Publication Title

Nature Photonics

Volume

10

Issue

12

Number of Pages

771-776

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1038/nphoton.2016.227

Socpus ID

84996844995 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84996844995

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