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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 22 — Oct. 24, 2011
  • pp: 21707–21716

Phase-matched sum frequency generation in strained silicon waveguides using their second-order nonlinear optical susceptibility

Ivan Avrutsky and Richard Soref  »View Author Affiliations

Optics Express, Vol. 19, Issue 22, pp. 21707-21716 (2011)

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Using analysis and numerical simulation, we have investigated near-infrared and mid-infrared second-harmonic generation (SHG) and sum frequency generation (SFG) in crystal silicon (SOI) waveguides that possess a strong second-order nonlinear susceptibility by virtue of a Si3N4 straining layer applied directly to the top surface of the waveguide. This layer induces anisotropic compressive strain in the waveguide core. Using the technique of TE/TM mode birefringence, we have derived waveguide geometries for both slab and strip channel waveguides that offer perfect phase matching of three lightwaves for SHG/SFG along a uniform waveguide, thereby offering the prospect of efficient wavelength conversion in monolithic silicon photonics.

© 2011 OSA

OCIS Codes
(130.3130) Integrated optics : Integrated optics materials
(190.0190) Nonlinear optics : Nonlinear optics

ToC Category:
Nonlinear Optics

Original Manuscript: August 25, 2011
Revised Manuscript: September 29, 2011
Manuscript Accepted: September 29, 2011
Published: October 19, 2011

Ivan Avrutsky and Richard Soref, "Phase-matched sum frequency generation in strained silicon waveguides using their second-order nonlinear optical susceptibility," Opt. Express 19, 21707-21716 (2011)

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