Nonlinearity-based circulator

Author/Creator ORCID

Date

2019-05-07

Department

Program

Citation of Original Publication

D'Aguanno, Giuseppe; et al.; Nonlinearity-based circulator; Applied Physics Letters 114, 181102 (2019); https://aip.scitation.org/doi/10.1063/1.5094736

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This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in D'Aguanno, Giuseppe; et al.; Nonlinearity-based circulator; Applied Physics Letters 114, 181102 (2019); https://aip.scitation.org/doi/10.1063/1.5094736 and may be found at https://aip.scitation.org/doi/10.1063/1.5094736.
Access to this item will begin on 2020-05-07

Subjects

Abstract

Commercially available nonreciprocal devices, such as isolators and circulators, play a fundamental role in communication systems. Since they commonly rely on magnetic materials, they tend to become bulky, expensive, and difficult to be integrated in conventional microelectronic circuits. Here, we explore the functionality of a magnetic-free circulator where reciprocity is broken by suitable geometric asymmetries combined with tailored nonlinearities. We show that it is possible to operate a fully passive coupled resonator system without external bias like a circulator for pulsed signals impinging at its ports within a desired range of intensities. The functionality can be applied to a variety of physical systems, ranging from electronics to photonics and acoustics.