Nonlinearity-based circulator
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.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- May 06, 2019
- Source ID
- 10.1063/1.5094736
Entities
People
- Andrea Alù
- Dimitrios L Sounas
- Giuseppe D'Aguanno
- Hady Moussa
Organizations
- Air Force Office of Scientific Research
- CUNY Graduate School and University Center
- City College of New York
- City University of New York
- University of Maryland
- University of Texas at Austin
- Wayne State University