Subwavelength metastructures for dispersion engineering in planar waveguide devices Conference Paper uri icon

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  • High contrast structures with a sub-wavelength pitch, small enough to suppress diffraction, exhibit extraordinary optical properties: depending on the design they may behave as perfect mirrors, anti-reflective interfaces, homogenous materials with controllable refractive index, or strongly dispersive materials. Here we discuss on the design possibilities such structures offer in planar waveguide devices in silicon-on-insulator. We briefly review the application of sub-wavelength structures in a variety of waveguide devices. We then focus on some of the latest advances in the design ultra-compact and ultra-wideband multimode interference couplers based on dispersion engineered sub-wavelength structures.


  • Halir, Robert
  • Ortega-Moñux, Alejandro
  • Cheben, Pavel
  • Maese-Novo, Alejandro
  • Perez-Galacho, Diego
  • Alonso-Ramos, Carlos
  • Molina-Fernández, Iñigo
  • Gonzalo Wangueemert-Perez, J
  • H Schmid, Jens
  • Xu, DanXia
  • Janz, S

publication date

  • January 2014