Topological-Charge-Enabled Photonic Doping in ENZ Media
Abstract
Conventional photonic doping schemes predominantly employ circular or rectangular dielectric dopants with zero topological charge, where the effective permeability can only be tuned through material selection and geometric scaling, resulting in limited design flexibility. In this work, topological structures are introduced into dielectric dopants by embedding internal holes to generate nonzero topological charge. Based on this concept, a theoretical model is established to describe the effective permeability of photonic doping systems with nonzero topological charge, and the underlying mechanisms governing topological-charge-dependent transmission are systematically elucidated. The results demonstrate that engineering nonzero topological charge through the number, shape, size and position of internal holes within dielectric dopants enables flexible manipulation of the internal magnetic field distributions, thereby providing precisely control over the effective permeability, as well as the resonance frequency and spectral linewidth of the transmission spectrum. The proposed multi-dimensional photonic doping strategy, integrating topological-charge engineering with geometric design, substantially enriches the available degrees of freedom for dispersion engineering and provides a versatile platform for advanced functional photonic devices.
Versions
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BibTeX
@misc{xiong2026topologicalchargeenabled,
title = {{Topological-Charge-Enabled Photonic Doping in ENZ Media}},
author = {Zhicheng Xiong and Fei Sun and Weiqi Yuan and Yichao Liu and Shuai Zhang and Zhihui Chen and Mingda Zhang},
howpublished = {arXiv},
year = {2026},
month = jul,
doi = {10.48550/arxiv.2607.16751},
eprint = {2607.16751},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2607.16751},
}
RIS
TY - UNPB
TI - Topological-Charge-Enabled Photonic Doping in ENZ Media
AU - Zhicheng Xiong
AU - Fei Sun
AU - Weiqi Yuan
AU - Yichao Liu
AU - Shuai Zhang
AU - Zhihui Chen
AU - Mingda Zhang
PY - 2026
DA - 2026/07/18
PB - arXiv
DO - 10.48550/arxiv.2607.16751
UR - https://arxiv.org/abs/2607.16751
AB - Conventional photonic doping schemes predominantly employ circular or rectangular dielectric dopants with zero topological charge, where the effective permeability can only be tuned through material selection and geometric scaling, resulting in limited design flexibility. In this work, topological structures are introduced into dielectric dopants by embedding internal holes to generate nonzero topological charge. Based on this concept, a theoretical model is established to describe the effective permeability of photonic doping systems with nonzero topological charge, and the underlying mechanisms governing topological-charge-dependent transmission are systematically elucidated. The results demonstrate that engineering nonzero topological charge through the number, shape, size and position of internal holes within dielectric dopants enables flexible manipulation of the internal magnetic field distributions, thereby providing precisely control over the effective permeability, as well as the resonance frequency and spectral linewidth of the transmission spectrum. The proposed multi-dimensional photonic doping strategy, integrating topological-charge engineering with geometric design, substantially enriches the available degrees of freedom for dispersion engineering and provides a versatile platform for advanced functional photonic devices.
ER -