Bonn 2025 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 49: Poster – Photonics, Lasers, and Applications
Q 49.27: Poster
Wednesday, March 12, 2025, 17:00–19:00, Tent
Fiber-Interfaced Hollow-Core Light Cage: A Novel Lab-on-Fiber Platform — •Wenqin Huang1, Diana Pereira1,2, Jun Sun1, Matthias Zeisberger1, and Markus A. Schmidt1,3,4 — 1Leibniz Institute of Photonic Technology, Albert-Einstein-Str. 9, 07745 Jena, Germany — 2i3N & Physics Department, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal — 3Abbe Center of Photonics and Faculty of Physics, Friedrich Schiller University Jena, Max-Wien-Platz 1, 07743 Jena, Germany — 4Otto Schott Institute of Material Research, Friedrich Schiller University Jena, Fraunhoferstr. 6, 07743 Jena, Germany
We present an innovative platform for fiber-integrated photonic devices by incorporating hollow-core light cages (LCs) onto fibers using 3D nanoprinting. Two LC geometries, featuring record-high aspect ratio polymer strands, were fabricated directly onto step-index fibers, providing unique lateral access to the core and showcasing excellent optical properties. The anti-resonance effect within these structures enables precise spectral transmission and efficient light confinement, validated through strong experimental agreement with theoretical models. This work highlights the small-core geometry, which achieves high fringe contrast and exceptional reproducibility. The fiber-interfaced LCs introduce a platform with potential in diffusion-based sensing, environmental analysis, nanoscience, and quantum technologies. The mechanical stability, achieved through customized support structures, ensures durability without compromising performance, enabling practical use in demanding environments.
Keywords: hollow-core waveguides; 3d-printing; fiber-integrated photonics