What is Nonreciprocity? Part II
Abstract
This paper is the second part of a two-part paper on \emph{Electromagnetic (EM) Nonreciprocity (NR)}. Part~I has defined NR, pointed out that linear NR is a stronger form of NR than nonlinear (NL) NR, explained EM Time-Reversal (TR) Symmetry (TRS) Breaking (TRS-B), described linear Time-Invariant (TI) NR media, generalized the Lorentz reciprocity theorem for NR, and provided a physical interpretation of the resulting Onsager-Casimir relations~\cite{Caloz_AWPL_NR_I_2018}. This part first explains the TR specificity of lossy and open systems. Next, it proposes an extended version of the S-parameters for \emph{all NR} systems. Then, it presents the fundamentals of linear-TI (LTI) NR, linear Time-Variant (LTV) Space-Time (ST) modulated NR and NL NR systems. Finally, it addresses confusions between with systems.
Cite
@article{arxiv.1804.00238,
title = {What is Nonreciprocity? Part II},
author = {Christophe Caloz and Andrea Alù and Sergei Tretyakov and Dimitrios Sounas and Karim Achouri and Zoé-Lise Deck-Léger},
journal= {arXiv preprint arXiv:1804.00238},
year = {2018}
}