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Article Dans Une Revue Optics Letters Année : 2021

Optical memory effect in square multimode fibers

Résumé

We demonstrate experimentally the existence of a translational optical memory effect in square-core multimode fibers. We found that symmetry properties of square-core waveguides lead to speckle patterns shifting along four directions at the fiber output for any given shift direction at the input. A simple theoretical model based on a perfectly reflective square waveguide is introduced to predict and interpret this phenomenon. We report experimental results obtained with 532-nm coherent light propagating through a square-core step-index multimode fiber, demonstrating that this translational memory effect can be observed for shift distances up to typically 10 µm after propagation through several centimeters of fiber.
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Dates et versions

hal-03870662 , version 1 (25-11-2022)

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Antonio Caravaca-Aguirre, Adrien Carron, Sylvain Mezil, Irène Wang, Emmanuel Bossy. Optical memory effect in square multimode fibers. Optics Letters, 2021, 46 (19), pp.4924. ⟨10.1364/OL.436134⟩. ⟨hal-03870662⟩

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