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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 12 — Jun. 17, 2013
  • pp: 14876–14887

Highly efficient phase-matched second harmonic generation using an asymmetric plasmonic slot waveguide configuration in hybrid polymer-silicon photonics

Jihua Zhang, Eric Cassan, Dingshan Gao, and Xinliang Zhang  »View Author Affiliations

Optics Express, Vol. 21, Issue 12, pp. 14876-14887 (2013)

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We theoretically investigate the possible increase of the second harmonic generation (SHG) efficiency in silicon compatible waveguides by considering an asymmetrical plasmonic slot waveguide geometry and a χ(2) nonlinear polymer infiltrating the slot. The needed phase matching condition is satisfied between the fundamental waveguide mode at the fundamental frequency (FF) and second-order waveguide mode at the second harmonic frequency (SHF) by an appropriate design of the waveguide opto-geometrical parameters. The SHG signal generated in our starting waveguide is three orders of magnitude higher than those previously reported for a FF corresponding to λ = 1550 nm. Then, the SHG performance was further improved by increasing the asymmetry of the structure where nonlinear coupling coefficients as large as 292 psm−1W-1/2 are predicted. The device length is shorter than 20 µm and the normalized SHG conversion efficiency comes up to more than 1 × 105 W−1cm−2.

© 2013 OSA

OCIS Codes
(190.2620) Nonlinear optics : Harmonic generation and mixing
(250.5460) Optoelectronics : Polymer waveguides
(250.5403) Optoelectronics : Plasmonics
(250.4390) Optoelectronics : Nonlinear optics, integrated optics

ToC Category:
Nonlinear Optics

Original Manuscript: February 19, 2013
Revised Manuscript: April 12, 2013
Manuscript Accepted: May 22, 2013
Published: June 14, 2013

Jihua Zhang, Eric Cassan, Dingshan Gao, and Xinliang Zhang, "Highly efficient phase-matched second harmonic generation using an asymmetric plasmonic slot waveguide configuration in hybrid polymer-silicon photonics," Opt. Express 21, 14876-14887 (2013)

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