Low-power thermo-optic switching using photonic crystal fano structure with p-i-n junction

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We report the use of Fano resonances as compact optical switches by exploiting their sharp asymmetric lineshape together with thermo-optic effects. This enables low footprint and efficient on chip integrated systems. The device consists of a photonic crystal (PhC) membrane with a waveguide side-coupled to a nanocavity surrounded by a p-i-n junction. We demonstrate the thermal tuning of an asymmetric Fano resonances with low power requirements and a response time of 16.1μs. Their high extinction ratio and close spectral separation between maximum and minimum of transmission makes Fano resonances suitable candidates for such optical switching.

Original languageEnglish
Title of host publicationProceedings of 21st International Conference on Transparent Optical Networks
PublisherIEEE Computer Society Press
Publication date1 Jul 2019
Article number8840273
ISBN (Electronic)9781728127798
Publication statusPublished - 1 Jul 2019
Event21st International Conference on Transparent Optical Networks - Faculty of Science, University of Angers, Angers, France
Duration: 9 Jul 201913 Jul 2019


Conference21st International Conference on Transparent Optical Networks
LocationFaculty of Science, University of Angers
SponsorApex Technologies, Institut des Sciences de l'Evolution, MDPI, Lumomat, Moltech-Anjou, Springer Nature Switzerland AG
Internet address


  • Fano resonances
  • Optical switching
  • P-i-n junction
  • Photonic crystal

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