Lens-less endoscopy based on multi-core fibers (MCFs) with aperiodic core arrangements enables 3D imaging deep inside tissue with reduced imaging artifacts such as higher-order diffraction. With a scalable iterative stack-and-draw process, we fabricated and characterized (e.g. cross-talk) two aperiodic MCFs: (i) a 250 µm fiber with 420 cores and (ii) a 333 µm fiber with 1281 cores. Since lens-less endoscopy is sensitive to dynamic bending, two different approaches to twist the fibers were evaluated: i) rotation of the fiber preform during fiber drawing and (ii) post-production twisting of the MCF within a fiber processing station.


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    Title :

    Aperiodic multi-core fibers for lens-less endoscopy


    Contributors:
    Stephan, R. (author) / Scharf, E. (author) / Zolnacz, K. (author) / Hausmann, K. (author) / Ließmann, M. (author) / Kötters, L. (author) / Ristau, D. (author) / Czarske, J. (author) / Kuschmierz, R. (author) / Steinke, M. (author)

    Conference:

    Optical Fibers and Sensors for Medical Diagnostics, Treatment and Environmental Applications XXIII ; 2023 ; San Francisco,California,United States


    Published in:

    Proc. SPIE ; 12372


    Publication date :

    2023-03-06





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English




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