On-chip waveguide isolator based on bismuth iron garnet operating via nonreciprocal single-mode cutoff.


Journal Article

We analyze an on-chip optical isolator based on direction dependent single-mode cutoff, which is described in 1D and 2D momentum space. Isolation is shown using 3D finite difference time domain (FDTD) where the magnetization is represented by imaginary off-diagonal permittivity tensor elements. The isolator designs are optimized using perturbation theory, which successfully predicts increased isolation for rib waveguides and structures with non-magnetic dielectric layers. Our isolators are based on bismuth iron garnet and its compatible substrates; an isolation ratio of 10.7 dB/mm is achieved for TM modes.

Full Text

Cited Authors

  • Drezdzon, SM; Yoshie, T

Published Date

  • May 2009

Published In

Volume / Issue

  • 17 / 11

Start / End Page

  • 9276 - 9281

PubMed ID

  • 19466179

Pubmed Central ID

  • 19466179

Electronic International Standard Serial Number (EISSN)

  • 1094-4087

International Standard Serial Number (ISSN)

  • 1094-4087

Digital Object Identifier (DOI)

  • 10.1364/oe.17.009276


  • eng