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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 5 — Mar. 2, 2009
  • pp: 3396–3406

Optics InfoBase > Optics Express > Volume 17 > Issue 5 > Page 3396

Nonlinearities in porous silicon optical waveguides at 1550 nm

Paveen Apiratikul, Andrea M. Rossi, and Thomas E. Murphy  »View Author Affiliations


Optics Express, Vol. 17, Issue 5, pp. 3396-3406 (2009)
http://dx.doi.org/10.1364/OE.17.003396


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Abstract

We report an experimental investigation of the nonlinear optical properties of nanoporous silicon optical waveguides measured at 1550 nm. The nonlinear properties including two-photon absorption, self-phase modulation, free-carrier absorption and free-carrier plasma dispersion are characterized and compared with similar measurements conducted on a conventional silicon-on-insulator ridge waveguide. Our study reveals that even waveguides that are 70% porous exhibit two-photon absorption and self-phase modulation coefficients that are comparable to those of crystalline silicon. The free-carrier absorption and dispersion in porous silicon waveguides are found to be significantly faster, and stronger than those reported for crystalline silicon.

© 2009 Optical Society of America

OCIS Codes
(160.4330) Materials : Nonlinear optical materials
(190.4180) Nonlinear optics : Multiphoton processes
(190.5970) Nonlinear optics : Semiconductor nonlinear optics including MQW
(190.7110) Nonlinear optics : Ultrafast nonlinear optics
(230.7370) Optical devices : Waveguides
(160.4236) Materials : Nanomaterials

ToC Category:
Nonlinear Optics

History
Original Manuscript: January 5, 2009
Revised Manuscript: February 13, 2009
Manuscript Accepted: February 15, 2009
Published: February 19, 2009

Citation
Paveen Apiratikul, Andrea M. Rossi, and Thomas E. Murphy, "Nonlinearities in porous silicon optical waveguides at 1550 nm," Opt. Express 17, 3396-3406 (2009)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-17-5-3396


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