Autocorrective interferometers for photonic integrated circuits: Invited paper

Matteo Cherchi (Corresponding author)

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


Extensive literature has shown that finite impulse response (FIR) interferometers can be engineered to be insensitive under variations of different physical parameters, e.g., to ensure flat-top response and/or tolerance to fabrication errors. In this context, I will show how the Bloch sphere representation can be a very powerful design tool providing superior physical insight into the working principle of autocorrective devices like broadband 50:50 splitters or flat-top interleavers, that can be therefore designed through simple analytical formulas. I will eventually review the recent progress in practical implementation of the autocorrective designs in the micron-scale silicon photonics platform of VTT.
Original languageEnglish
Title of host publicationSmart Photonic and Optoelectronic Integrated Circuits 2022
EditorsSailing He, Sailing He, Laurent Vivien
PublisherInternational Society for Optics and Photonics SPIE
Number of pages14
ISBN (Electronic)9781510648814
Publication statusPublished - 5 Mar 2022
MoE publication typeA4 Article in a conference publication
EventSmart Photonic and Optoelectronic Integrated Circuits - Virtual, San Francisco, United States
Duration: 20 Feb 200224 Feb 2002

Publication series

SeriesProceedings of SPIE - The International Society for Optical Engineering


ConferenceSmart Photonic and Optoelectronic Integrated Circuits
Country/TerritoryUnited States
CitySan Francisco


  • autocorrective photonic devices
  • Bloch sphere
  • fabrication tolerant interferometers
  • finite impulse response filters
  • flat top filters
  • geometric representation
  • integrated interferometers
  • wavelength insensitive splitters


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