Computational optical imaging with a photonic lantern

Tim Birks, Debaditya Choudhury, Duncan McNicholl, Audrey Repetti, Itandehui Gris Sanchez, Shuhui Li, David Phillips, Graeme Whyte, Yves Wiaux, Robert Thomson

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Abstract

The thin and flexible nature of optical fibres often makes them the ideal technology to view biological processes in-vivo, but current microendoscopic approaches are limited in spatial resolution. Here, we demonstrate a route to high resolution microendoscopy using a multicore
fibre (MCF) with an adiabatic multimode-to-single-mode “photonic lantern” transition
formed at the distal end by tapering. We show that distinct multimode patterns of light can be projected from the output of the lantern by individually exciting the single-mode MCF cores, and that these patterns are highly stable to fibre movement. This capability is then
exploited to demonstrate a form of single-pixel imaging, where a single pixel detector is used to detect the fraction of light transmitted through the object for each multimode pattern. A custom computational imaging algorithm we call SARA-COIL is used to reconstruct the object using only the pre-measured multimode patterns themselves and the detector signals.
Original languageEnglish
Article number5217
JournalNature Communications
Volume11
DOIs
Publication statusPublished - 15 Oct 2020

Cite this

Birks, T., Choudhury, D., McNicholl, D., Repetti, A., Gris Sanchez, I., Li, S., Phillips, D., Whyte, G., Wiaux, Y., & Thomson, R. (2020). Computational optical imaging with a photonic lantern. Nature Communications, 11, [5217]. https://doi.org/10.1038/s41467-020-18818-6