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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 9 — May. 6, 2013
  • pp: 10886–10896

Efficient perfectly vertical fiber-to-chip grating coupler for silicon horizontal multiple slot waveguides

John Covey and Ray T. Chen  »View Author Affiliations


Optics Express, Vol. 21, Issue 9, pp. 10886-10896 (2013)
http://dx.doi.org/10.1364/OE.21.010886


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Abstract

Horizontal multiple slot waveguides of polysilicon and silicon nanocrystalline oxide were grating coupled to a surface normal fiber array. Measurements yielded a coupling efficiency of 60% per grating. The fabrication-tolerant, four-stage grating design was genetically evolved from a random seed without starting from first-principle design. Theoretical coupling efficiency was 68% and was re-designed to 63% after accommodating all sources of fabrication error. To our knowledge, this is the first implementation of a purely polysilicon and silicon nanocrystalline oxide slot waveguide platform.

© 2013 OSA

OCIS Codes
(050.2770) Diffraction and gratings : Gratings
(130.3120) Integrated optics : Integrated optics devices

ToC Category:
Integrated Optics

History
Original Manuscript: March 21, 2013
Revised Manuscript: April 19, 2013
Manuscript Accepted: April 23, 2013
Published: April 26, 2013

Citation
John Covey and Ray T. Chen, "Efficient perfectly vertical fiber-to-chip grating coupler for silicon horizontal multiple slot waveguides," Opt. Express 21, 10886-10896 (2013)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-9-10886


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