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Proceedings Paper

Improving endoscopic imaging with disordered multi-core fiber bundles (Conference Presentation)
Author(s): Dan Oron; Siddharth Sivankutty; Dani Kogan; Viktor Tsvirkun; Esben R. Andresen; Géraud Bouwmans; Hervé Rigneault

Paper Abstract

The periodic arrangement of core positions in multi-core fiber bundles introduces ‘ghost’ artifacts to endoscopic images obtained through them, whether in wide-field imaging (based on either direct imaging or speckle correlations) or in confocal scanning microscopy using wavefront shaping. Here we introduce partially disordered multi-core bundles as a means to overcome these artifacts. The benefits of their use will be discussed in the context of multiphoton scanning microscopy utilizing a spatial light modulator in the proximal end, and in the more general case of widefield imaging. We also show that both numerically and experimentally that the presence of disorder also enables to apply phase retrieval methods to characterize the phase distortion introduced due to propagation in the bundle without the need of an interferometrically stabilized reference. Thus, in addition to overcoming the challenge of ghost artifacts, disordered multi-core fibers have the potential to overcome another challenge, movement-induced phase distortions, by enabling real-time characterization of this phase distortion in reflection mode only via the proximal end.

Paper Details

Date Published: 24 April 2017
PDF: 1 pages
Proc. SPIE 10073, Adaptive Optics and Wavefront Control for Biological Systems III, 1007310 (24 April 2017); doi: 10.1117/12.2250266
Show Author Affiliations
Dan Oron, Weizmann Institute of Science (Israel)
Siddharth Sivankutty, Aix-Marseille Univ. (France)
Dani Kogan, Weizmann Institute of Science (Israel)
Viktor Tsvirkun, Aix-Marseille Univ. (France)
Esben R. Andresen, Univ. des Sciences et Technologies de Lille (France)
Géraud Bouwmans, Lab. de Physique des Lasers, Atomes et Molécules (France)
Hervé Rigneault, Aix-Marseille Univ. (France)


Published in SPIE Proceedings Vol. 10073:
Adaptive Optics and Wavefront Control for Biological Systems III
Thomas G. Bifano; Joel Kubby; Sylvain Gigan, Editor(s)

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