What is Nonreciprocity? Part II

2018/04/01 by Caloz, Christophe, Alù, Andrea, Tretyakov, Sergei +3 · 1 citation
#FOS: Physical sciences #Optics (physics.optics)

paper · doi:10.48550/arxiv.1804.00238

Abstract

This paper is the second part of a two-part paper on 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~\citeCaloz_AWPL_NR_I2018. This part first explains the TR specificity of lossy and open systems. Next, it proposes an extended version of the S-parameters for 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.

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