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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 11 — May. 25, 2009
  • pp: 9276–9281

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

Samuel M. Drezdzon and Tomoyuki Yoshie  »View Author Affiliations


Optics Express, Vol. 17, Issue 11, pp. 9276-9281 (2009)
http://dx.doi.org/10.1364/OE.17.009276


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Abstract

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.

© 2009 Optical Society of America

OCIS Codes
(130.0130) Integrated optics : Integrated optics
(230.3240) Optical devices : Isolators

ToC Category:
Integrated Optics

History
Original Manuscript: February 24, 2009
Revised Manuscript: May 14, 2009
Manuscript Accepted: May 15, 2009
Published: May 19, 2009

Citation
Samuel M. Drezdzon and Tomoyuki Yoshie, "On-chip waveguide isolator based on bismuth iron garnet operating via nonreciprocal single-mode cutoff," Opt. Express 17, 9276-9281 (2009)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-17-11-9276


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References

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