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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 46: Poster II

CPP 46.62: Poster

Donnerstag, 12. März 2026, 09:30–11:30, P5

Continuum Modeling of Light-Matter Interaction in Polymer-Based Hollow-Core Optical Fibers with Different Geometrical Configurations — •Zehra Gizem Mutlay and Mustafa Ordu — UNAM - National Nanotechnology Research Center and Institute of Materials Science and Nanotechnology, Bilkent University, Ankara 06800, Türkiye

Recent studies have demonstrated that nested hollow-core optical fibers (HCFs) can achieve attenuation below 0.1 dB/km while maintaining broad transmission bandwidths. This performance demonstrates the promise of air-guided waveguides as alternatives to conventional solid-core optical fibers. In this work, we perform continuum modeling based on the finite-element method to investigate light interaction with polymer in HCFs by implementing three- and four-tube cladding structures. The analysis involves designs with and without nested elements and supporting bars. Our comparative investigation includes silica- and polymer-based structures to identify how intrinsic material properties and geometrical parameters influence mode confinement, optical loss, and transmission behavior. The findings show that even minor changes in geometry or material composition significantly influence light propagation, which underlines the sensitivity of optical guidance to light-material interaction. This study establishes a continuum-based framework for analyzing electromagnetic behavior in polymer systems and lays the groundwork for developing 3D-printed polymer-based hollow-core fibers with reduced attenuation for future applications in optical and materials physics.

Keywords: Polymer-based hollow-core fibers; Material-dependent optical confinement; Finite element method (FEM)