Chromato-axial memory effect in step-index multimode fibers

Multimode fibers (MMFs) are used in many applications from telecommunications to minimally invasive micro-endoscopic imaging. However, the numerous modes and their coupling make light-beam control and imaging a delicate task. To circumvent this difficulty, recent methods exploit priors about the transmission of the system, such as the so-called optical memory effect. In this paper, we quantitatively characterize a chromato-axial memory effect in step-index MMFs, characterized through its slope dz/d? and its spectral and axial widths. We propose a theoretical model and numerical simulations that are in good agreement with experimental observations. (c) 2021 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

Automated summary

This article quantitatively characterized a chromato-axial memory effect in step-index MMFs through its slope and spectral and axial widths. The theoretical model and numerical simulations proposed in the paper are in good agreement with experimental observations.