Time-modulated periodic systems with PT symmetry

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Abstract

This work explores the effects of parity-time (PT) symmetry in time-modulated periodic systems. Mechanisms for dynamic tunability of exceptional points are presented. We show that synthetic linear momentum imparted by time-modulation leads to uni-directional exceptional points. Such structures could see application in uni-directional lasers with tunable directionality.

Original languageEnglish
Title of host publicationIET Conference Publications
PublisherInstitution of Engineering and Technology
EditionCP741
ISBN (Electronic)9781785618161, 9781785618437, 9781785618468, 9781785618871, 9781785619427, 9781785619694, 9781839530036
ISBN (Print)9781785617911
DOIs
StatePublished - 2018
Event12th European Conference on Antennas and Propagation, EuCAP 2018 - London, United Kingdom
Duration: Apr 9 2018Apr 13 2018

Publication series

NameIET Conference Publications
NumberCP741
Volume2018

Conference

Conference12th European Conference on Antennas and Propagation, EuCAP 2018
Country/TerritoryUnited Kingdom
CityLondon
Period04/9/1804/13/18

Keywords

  • Distributed feedback lasers
  • Optical modulation
  • Parity-time symmetry
  • Photonic crystals
  • Semiconductor lasers
  • Time-varying circuits
  • Time-varying systems

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