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Regulation of Non-Hermiticity in Spiral Microring Add-Drop Filters

  • Yihao Chen*
  • , Ke Xu
  • , Xun Guan
  • , Yuanzheng Ma
  • , Jiawei Wang
  • *Corresponding author for this work

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

Abstract

For on-chip optical cavities, various approaches have been investigated for steering the non-Hermiticity for realizing novel phenomena, such as exceptional points or PT-symmetry breaking. However, Here we report spiral microrings as an integrable deformed microcavity designed on silicon nitride-on-silica platform. By fine-adjusting the spacing between two spiral notches, the backscattering strength between clockwise and counterclockwise components can be controlled, which has been revealed in both simulation and experimental results.

Original languageEnglish
Title of host publication2023 Opto-Electronics and Communications Conference, OECC 2023
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781665462136
DOIs
StatePublished - 2023
Externally publishedYes
Event2023 Opto-Electronics and Communications Conference, OECC 2023 - Shanghai, China
Duration: 2 Jul 20236 Jul 2023

Publication series

Name2023 Opto-Electronics and Communications Conference, OECC 2023

Conference

Conference2023 Opto-Electronics and Communications Conference, OECC 2023
Country/TerritoryChina
CityShanghai
Period2/07/236/07/23

Keywords

  • backscattering
  • non-Hermitian
  • spiral microring

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