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arXiv · 2112.09564

Single-step transmission matrix retrieval for fast imaging through multi-mode fibers

Daniele Ancora·Lorenzo Dominici·Antonio Gianfrate·Paolo Cazzato·Milena De Giorgi·Dario Ballarini·Daniele Sanvitto·Luca Leuzzi
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Abstract

Recovering the transmission matrix of a disordered medium is a challenging problem in disordered photonics. Usually, its reconstruction relies on a complex inversion that aims at connecting a fully-controlled input to the deterministic interference of the light field scrambled by the device. At the moment, iterative phase-retrieval protocols provide the fastest reconstructing frameworks, converging in a few tens of iterations. Exploiting the knowledge of speckle correlations, we construct a new phase retrieval algorithm that reduces the computational cost to a single iteration. Besides being faster, our method is effective also using less measurements than state-of-the-art protocols. Thanks to reducing computation time by one order of magnitude, our result can be groundbreaking for real-time optical operations in medical imaging.

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Daniele Ancora, Lorenzo Dominici, Antonio Gianfrate, Paolo Cazzato, Milena De Giorgi, Dario Ballarini, Daniele Sanvitto, Luca Leuzzi. 2021-12-16. Single-step transmission matrix retrieval for fast imaging through multi-mode fibers. https://doi.org/10.1364/prj.462578

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