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Proceedings Paper

Digital confocal microscopy through a multimode fiber
Author(s): Damien Loterie; Salma Farahi; Ioannis Papadopoulos; Alexandre Goy; Demetri Psaltis; Christophe Moser
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Paper Abstract

Confocal laser-scanning microscopy is a well-known optical imaging method where a pinhole is used in the illumination and detection pathways of a normal microscope, in order to selectively excite and detect a particular focal volume. The advantage of this method is a significant increase in contrast, due to the rejection of background contributions to the signal. Here, we propose to apply this method in the context of multimode fiber endoscopy. Due to modal scrambling, it is not possible to use a physical pinhole to filter light signals that have travel through multimode fibers. Instead, we use a transmission matrix approach to characterize the propagation of light through the fiber, and we apply the filtering operation in the digital domain.

Paper Details

Date Published: 5 September 2015
PDF: 6 pages
Proc. SPIE 9565, Liquid Crystals XIX, 95650Y (5 September 2015); doi: 10.1117/12.2189798
Show Author Affiliations
Damien Loterie, Ecole Polytechnique Fédérale de Lausanne (Switzerland)
Salma Farahi, Ecole Polytechnique Fédérale de Lausanne (Switzerland)
Ioannis Papadopoulos, Ecole Polytechnique Fédérale de Lausanne (Switzerland)
Princeton Univ. (United States)
Alexandre Goy, Ecole Polytechnique Fédérale de Lausanne (Switzerland)
Demetri Psaltis, Ecole Polytechnique Fédérale de Lausanne (Switzerland)
Christophe Moser, Ecole Polytechnique Fédérale de Lausanne (Switzerland)

Published in SPIE Proceedings Vol. 9565:
Liquid Crystals XIX
Iam Choon Khoo, Editor(s)

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