Extended field-of-view in a lensless endoscope using an aperiodic multicore fiber

Siddharth Sivankutty, Viktor Tsvirkun, Géraud Bouwmans, Dani Kogan, Dan Oron, Esben Ravn Andresen, Hervé Rigneault

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

We investigate lensless endoscopy using coherent beam combining and aperiodic multicore fibers (MCF). We show that diffracted orders, inherent to MCF with periodically arranged cores, dramatically reduce the field-of-view (FoV), and that randomness in MCF core positions can increase the FoV up to the diffraction limit set by a single fiber core, while maintaining a MCF experimental feasibility. We demonstrate experimentally pixelation-free lensless endoscopy imaging over a 120 μm FoV with an aperiodic MCF designed with widely spaced cores. We show that this system is suitable to perform beam scanning imaging by simply applying a tilt to the proximal wavefront.

Original languageEnglish
Pages (from-to)3531-3534
Number of pages4
JournalOptics Letters
Volume41
Issue number15
DOIs
Publication statusPublished - Aug 1 2016

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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    Sivankutty, S., Tsvirkun, V., Bouwmans, G., Kogan, D., Oron, D., Andresen, E. R., & Rigneault, H. (2016). Extended field-of-view in a lensless endoscope using an aperiodic multicore fiber. Optics Letters, 41(15), 3531-3534. https://doi.org/10.1364/OL.41.003531