Vertically emitting silicon disk resonators with periodic shape modulation

Research output: Contribution to journalArticlepeer-review


It is shown by direct numerical modeling, using the 3D FDTD method, that a disk resonator with a sinusoidal modulation of its boundary has not only a modified frequency spectrum, but also a greater proportion of its optical radiation is directed normal to its surface. Simulations are carried out for a set of disk resonators on a typical silicon-on-insulator structure with a 250-nm silicon core and a disk diameter of about 2.6 μm with the 5% sinusoidal boundary perturbation. Depending on the optical wavelength, the far-field radiation pattern looks either like a quasihomogeneous optical beam or a torus, having a maximum or minimum intensity at its center, respectively.

Original languageEnglish
Pages (from-to)52-55
Number of pages4
JournalPhotonics and Nanostructures - Fundamentals and Applications
Publication statusPublished - 1 Feb 2018


  • Integrated optics
  • Laser cavity resonators
  • Light sources
  • Numerical simulation
  • Optical waveguides
  • Silicon photonics
  • Surface emitting lasers
  • Whispering gallery modes


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