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  • j_bertolotti@mathstodon.xyzundefined

    Paper accepted!

    Uncategorized specklecorrelations opticalfibers optics
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    j_bertolotti@mathstodon.xyzundefined
    Paper accepted! 🥳 "Explaining and exploiting the radial memory effect in multimode optical fibres"(A slightly older version is on ArXiv: https://arxiv.org/abs/2508.11389 )When (coherent) light propagates in a multimode fibre, each mode accumulates a slightly different phase, so the output looks like a random speckle patter.But it is NOT random! This non-randomness has a number of consequences, among them the fact that the you get predictable patterns in the apparently random output. We show that a focused input will always result in a ring of excess intensity at the same radius of the input, we give a simple but rigorous explanation of why this happens, and suggest how this might be useful in practice.#Optics #OpticalFibers #SpeckleCorrelations

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