The rotational memory effect of a multimode fiber

Abstract

We demonstrate the rotational memory effect in a multimode fiber. Rotating the incident wavefront around the fiber core axis leads to a rotation of the resulting pattern of the fiber output without significant changes in the resulting speckle pattern. The rotational memory effect can be exploited for non-invasive imaging or ultrafast high-resolution scanning through a multimode fiber. Our experiments demonstrate this effect over a full range of angles in two experimental configurations.

7 pages, 3 figures

References in corpus (3)

• Non-invasive real-time imaging through scattering layers and around corners via speckle correlations
• Superpixel-based spatial amplitude and phase modulation using a digital micromirror device
• Characterization of the angular memory effect of scattered light in biological tissues

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