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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Editor: Grover Swartzlander
  • Vol. 30, Iss. 7 — Jul. 1, 2013
  • pp: 1954–1965

Highly nonlinear hybrid silicon-plasmonic waveguides: analysis and optimization

Alexandros Pitilakis and Emmanouil E. Kriezis  »View Author Affiliations

JOSA B, Vol. 30, Issue 7, pp. 1954-1965 (2013)

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We rigorously analyze nonlinear propagation in hybrid silicon-plasmonic (HSP) waveguides. Focusing on the relative importance of Kerr and free carrier effects (FCE) originating from two-photon absorption, we establish a set of figures of merit applicable to any silicon-comprising waveguide. An optimized HSP design is proposed, deeply confining the optical field in a nanosized nonlinear polymer gap formed between a metal wedge and an underlying silicon wire. An exceptionally high nonlinear parameter γ>104m1W1 is attained, combined with an FCE power threshold larger than 1 W, even in CW. The formulation is also extended to multimode waveguides, supported by two all-optical applications of an HSP nonlinear directional coupler.

© 2013 Optical Society of America

OCIS Codes
(130.4310) Integrated optics : Nonlinear
(190.4390) Nonlinear optics : Nonlinear optics, integrated optics
(230.4320) Optical devices : Nonlinear optical devices
(230.7370) Optical devices : Waveguides
(250.5403) Optoelectronics : Plasmonics

ToC Category:
Optical Devices

Original Manuscript: March 14, 2013
Revised Manuscript: May 24, 2013
Manuscript Accepted: May 24, 2013
Published: June 26, 2013

Alexandros Pitilakis and Emmanouil E. Kriezis, "Highly nonlinear hybrid silicon-plasmonic waveguides: analysis and optimization," J. Opt. Soc. Am. B 30, 1954-1965 (2013)

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