Inverse-designed all-dielectric optical diode

F. Callewaert, Koray Aydin

Research output: Chapter in Book/Report/Conference proceedingConference contribution


The objective-first inverse-design algorithm is used to design an ultra-compact all-dielectric optical diode. Based on silicon and air only, this optical diode relies on asymmetric spatial mode conversion between the left and right ports. The first even mode incident from the left port is transmitted to the right port after being converted into an odd mode. On the other hand, same mode incident from the right port is reflected back by the optical diode dielectric structure. The convergence and performance of the algorithm are studied, along with a transform method that converts continuous permittivity medium into a binary material design. The optimal device is studied with full electromagnetic simulations to compare its behavior under right and left incidences, in 2D and 3D settings as well. A broadband optical diode is reported with a large ratio between the two transmission directions. This illustrates the potential of the objective-first inverse-design method to design ultra-compact broadband photonic devices.

Original languageEnglish (US)
Title of host publicationMetamaterials, Metadevices, and Metasystems 2016
EditorsNikolay I. Zheludev, Mikhail A. Noginov, Nader Engheta, Nikolay I. Zheludev
ISBN (Electronic)9781510602274
StatePublished - Jan 1 2016
EventMetamaterials, Metadevices, and Metasystems 2016 - San Diego, United States
Duration: Aug 28 2016Sep 1 2016


OtherMetamaterials, Metadevices, and Metasystems 2016
CountryUnited States
CitySan Diego


  • Computational photonics
  • FDTD
  • Objective-first Inverse-design
  • Optical diode

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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