Compressive optical imaging with a photonic lantern

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 new route to high resolution microendoscopy using a multicore fibre (MCF) with a...

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Bibliographic Details
Published inarXiv.org
Main Authors Choudhury, Debaditya, McNicholl, Duncan K, RepettI, Audrey, Gris-Sánchez, Itandehui, Birks, Tim A, Wiaux, Yves, Thomson, Robert R
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 01.03.2019
Subjects
Algorithms
Biological activity
Coils
Imaging
Optical fibers
Photonics
Physics - Optics
Pixels
Spatial resolution
Tapering
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Summary: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 new route to high resolution microendoscopy using a multicore fibre (MCF) with an adiabatic multimode-to-singlemode 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 compressive imaging algorithm we call SARA-COIL is used to reconstruct the object using only the pre-measured multimode patterns themselves and the detector signals.
ISSN:2331-8422
DOI:10.48550/arxiv.1903.01288