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

  • Quentin Saudan (Guest lecturer)

Activity: Talks and presentationsConference presentations


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.
Period12 Jul 2019
Event title21st International Conference on Transparent Optical Networks
Event typeConference
Conference number21
SponsorsApex Technologies, Institut des Sciences de l'Evolution, MDPI, Lumomat, Moltech-Anjou, Springer Nature Switzerland AG
LocationAngers, FranceShow on map
Degree of RecognitionInternational


  • Fano resonance
  • Photonic crystal
  • 2019
  • optical switching
  • thermo-optic
  • PIN junction