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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 10 — May. 15, 2006
  • pp: 4351–4356

Sharp trench waveguide bends in dual mode operation with ultra-small photonic crystals for suppressing radiation

Cui Xudong, Christian Hafner, Rüdiger Vahldieck, and Franck Robin  »View Author Affiliations

Optics Express, Vol. 14, Issue 10, pp. 4351-4356 (2006)

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A sharp 90 degree bend in a dual mode trench waveguide is analyzed by means of the MMP method. Through evolutionary strategy optimization, different configurations with low reflection, low radiation, low mode conversion, and therefore high transmission for the dominant mode are obtained. Three different types of bends are analyzed and compared: mirror-based structures, resonator-based structures, and structures with a small photonic crystal in the bend area. The local photonic crystal helps not only suppressing radiation but also provides solutions with fewer fabrication tolerance problems.

© 2006 Optical Society of America

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(230.7400) Optical devices : Waveguides, slab

ToC Category:
Integrated Optics

Original Manuscript: March 24, 2006
Revised Manuscript: May 8, 2006
Manuscript Accepted: May 8, 2006
Published: May 15, 2006

Cui Xudong, Christian Hafner, Rüdiger Vahldieck, and Franck Robin, "Sharp trench waveguide bends in dual mode operation with ultra-small photonic crystals for suppressing radiation," Opt. Express 14, 4351-4356 (2006)

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