Characteristic Modes of Nonreciprocal Structures
Classical Physics
2024-09-05 v1 Computational Physics
Optics
Abstract
The scattering formulation of characteristic mode decomposition is utilized to extend modal analysis to lossless scatterers breaking time-reversal symmetry. This enables characteristic modes analysis on devices containing gyrotropic or moving media. The resulting nonreciprocity introduces features not observed in reciprocal scenarios, such as asymmetric phase progression in characteristic far fields. These new phenomena are carefully discussed using examples of varying complexity. Indicators of nonreciprocity based on modal data are also introduced.
Keywords
Cite
@article{arxiv.2312.14554,
title = {Characteristic Modes of Nonreciprocal Structures},
author = {Niklas Wingren and Daniel Sjöberg and Mats Gustafsson and Johan Lundgren and Miloslav Capek and Lukas Jelinek and Kurt Schab},
journal= {arXiv preprint arXiv:2312.14554},
year = {2024}
}
Comments
5 pages, 6 figures, 1 table