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6 March 2023 Aperiodic multi-core fibers for lens-less endoscopy
R. Stephan, E. Scharf, K. Zolnacz, K. Hausmann, M. Ließmann, L. Kötters, D. Ristau, J. Czarske, R. Kuschmierz, M. Steinke
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Proceedings Volume 12372, Optical Fibers and Sensors for Medical Diagnostics, Treatment and Environmental Applications XXIII; 1237208 (2023) https://doi.org/10.1117/12.2648872
Event: SPIE BiOS, 2023, San Francisco, California, United States
Abstract
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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R. Stephan, E. Scharf, K. Zolnacz, K. Hausmann, M. Ließmann, L. Kötters, D. Ristau, J. Czarske, R. Kuschmierz, and M. Steinke "Aperiodic multi-core fibers for lens-less endoscopy", Proc. SPIE 12372, Optical Fibers and Sensors for Medical Diagnostics, Treatment and Environmental Applications XXIII, 1237208 (6 March 2023); https://doi.org/10.1117/12.2648872
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KEYWORDS
Multicore fiber
Endoscopy
Design and modelling
Structured optical fibers
Silica
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