Speckle-correlation imaging through a kaleidoscopic multimode fiber.

ABSTRACT: Speckle-correlation imaging techniques are widely used for noninvasive imaging through complex scattering media. While light propagation through multimode fibers and scattering media share many analogies, reconstructing images through multimode fibers from speckle correlations remains an unsolved challenge. Here, we exploit a kaleidoscopic memory effect emerging in square-core multimode fibers and demonstrate fluorescence imaging with no prior knowledge on the fiber. Experimentally, our approach simply requires to translate random speckle patterns at the input of a square-core fiber and to measure the resulting fluorescence intensity with a bucket detector. The image of the fluorescent object is then reconstructed from the autocorrelation of the measured signal by solving an inverse proble

SUBMITTER: Bouchet D 

PROVIDER: S-EPMC10293815 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature