Computational optical imaging with a photonic lantern.

Computational optical imaging with a photonic lantern.
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DOI:
10.1038/s41467-020-18818-6
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发表时间:
2020-10-15
影响因子:
16.6
通讯作者:
Thomson RR
Thomson RR
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Choudhury D;McNicholl DK;Repetti A;Gris-Sánchez I;Li S;Phillips DB;Whyte G;Birks TA;Wiaux Y;Thomson RR

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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. Here, the authors demonstrate a route to high resolution microendoscopy using a multicore fibre with a photonic lantern. They show that distinct multimode patterns of light can be projected from the output of the lantern by individually exciting the single-mode MCF cores, whose patterns are highly stable to fibre movement.
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