Compact magnetless optical isolator using two coupled microcavities with time-modulation

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

It is shown how time-modulating the refractive index of two coupled microcavities with a 90 degree phase shift between them leads to non-reciprocal wave propagation. The cavities are implemented as defects in a one-dimensional photonic crystal. The ratio of forward to backward power transmission can be as high as 25 dB with experimentally realizable modulation frequencies and amplitudes. Further, it is demonstrated how a simple passive filter can remove modulation sidebands.

Original languageEnglish
Title of host publication2021 International Applied Computational Electromagnetics Society Symposium, ACES 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781733509626
DOIs
StatePublished - Aug 1 2021
Externally publishedYes
Event2021 International Applied Computational Electromagnetics Society Symposium, ACES 2021 - Virtual, Hamilton, Canada
Duration: Aug 1 2021Aug 5 2021

Publication series

Name2021 International Applied Computational Electromagnetics Society Symposium, ACES 2021

Conference

Conference2021 International Applied Computational Electromagnetics Society Symposium, ACES 2021
Country/TerritoryCanada
CityVirtual, Hamilton
Period08/1/2108/5/21

Keywords

  • Cavities
  • Cavity resonators
  • Finite-difference time-domain (FDTD)
  • Isolators
  • Microwave optical design
  • Optical guided waves and devices
  • Time-varying circuits

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