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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 25 — Dec. 7, 2009
  • pp: 22571–22577

Efficient fiber coupler for vertical silicon slot waveguides

Haishan Sun, Antao Chen, Attila Szep, and Larry R. Dalton  »View Author Affiliations

Optics Express, Vol. 17, Issue 25, pp. 22571-22577 (2009)

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A mode size converter for efficient fiber coupling to silicon slot waveguides was proposed and demonstrated. It consists of two inverted lateral tapers that extend from the two strips of the silicon slot waveguide, and an overlaid low index waveguide with expanded mode size. Parameters including taper length and taper tip width were optimized with computer simulations. Samples were fabricated with a combined electron beam and photolithography process on a silicon-on-insulator wafer. The measured coupling loss to a standard single mode optical fiber was reduced by 8 dB for TE mode and 5.2 dB for TM mode with the converter.

© 2009 OSA

OCIS Codes
(130.0130) Integrated optics : Integrated optics
(230.7370) Optical devices : Waveguides
(350.4238) Other areas of optics : Nanophotonics and photonic crystals

ToC Category:
Integrated Optics

Original Manuscript: September 22, 2009
Revised Manuscript: November 16, 2009
Manuscript Accepted: November 17, 2009
Published: November 24, 2009

Haishan Sun, Antao Chen, Attila Szep, and Larry R. Dalton, "Efficient fiber coupler for vertical silicon slot waveguides," Opt. Express 17, 22571-22577 (2009)

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