Grating assisted waveguide-to-waveguide couplers

Tao Liang, Richard W. Ziolkowski

Research output: Contribution to journalArticlepeer-review


A new radiation-type waveguide-to-waveguide coupler is proposed. The coupling is realized through gratings embedded on the dielectric waveguides involved. Compared to the conventional hybrid-mode coupler, this type of coupler has advantages in that the two waveguides can be quite dissimilar as well as being separated by large distances. It is demonstrated that the coupling performance of this radiation-type coupler can be enhanced significantly by using photonic bandgap (PBG) structures.

Original languageEnglish (US)
Pages (from-to)693-695
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number3
StatePublished - Mar 1998


  • Computational electromagnetics
  • FDTD
  • Grating assisted couplet
  • Integrated optics
  • Photonic bandgap structure

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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