General Conditions to Realize Exceptional Points of Degeneracy and Applications

We explore the emergence of exceptional points of degeneracy (EPDs) that denote a coalescence of multiple eigenmodes in coupled-mode structures. We establish the general conditions that lead to observing EPDs of different orders in various coupled systems, either uniform (non-periodic) or periodic....

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Bibliographic Details
Published in:	2018 12th International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials) pp. 287 - 289
Main Authors:	Nada, M. Y., Mealy, T., Yazdi, F., Abdelshafy, A. F., Figotin, A., Capolino, F.
Format:	Conference Proceeding
Language:	English
Published:	IEEE 01-08-2018
Subjects:	Optical coupling Optical losses Optical resonators Optical sensors Optical waveguides Periodic structures Transmission line matrix methods
Online Access:	Get full text
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Summary:	We explore the emergence of exceptional points of degeneracy (EPDs) that denote a coalescence of multiple eigenmodes in coupled-mode structures. We establish the general conditions that lead to observing EPDs of different orders in various coupled systems, either uniform (non-periodic) or periodic. EPDs can be found in lossless systems as well as in systems with gain-loss balance. Also, we provide examples of potential applications of structures with EPDs that help improve the performance of devices, like sensors, oscillators, etc., at microwave and optical frequencies.
DOI:	10.1109/MetaMaterials.2018.8534124