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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 4 — Feb. 16, 2009
  • pp: 2944–2953

Slow light enhancement of nonlinear effects in silicon engineered photonic crystal waveguides

Christelle Monat, Bill Corcoran, Majid Ebnali-Heidari, Christian Grillet, Benjamin J. Eggleton, Thomas P. White, Liam O’Faolain, and Thomas. F. Krauss  »View Author Affiliations


Optics Express, Vol. 17, Issue 4, pp. 2944-2953 (2009)
http://dx.doi.org/10.1364/OE.17.002944


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Abstract

We report nonlinear measurements on 80μm silicon photonic crystal waveguides that are designed to support dispersionless slow light with group velocities between c/20 and c/50. By launching picosecond pulses into the waveguides and comparing their output spectral signatures, we show how self phase modulation induced spectral broadening is enhanced due to slow light. Comparison of the measurements and numerical simulations of the pulse propagation elucidates the contribution of the various effects that determine the output pulse shape and the waveguide transfer function. In particular, both experimental and simulated results highlight the significant role of two photon absorption and free carriers in the silicon waveguides and their reinforcement in the slow light regime.

© 2009 Optical Society of America

OCIS Codes
(190.4390) Nonlinear optics : Nonlinear optics, integrated optics
(130.5296) Integrated optics : Photonic crystal waveguides

ToC Category:
Nonlinear Optics

History
Original Manuscript: December 4, 2008
Revised Manuscript: February 6, 2009
Manuscript Accepted: February 6, 2009
Published: February 12, 2009

Citation
Christelle Monat, Bill Corcoran, Majid Ebnali-Heidari, Christian Grillet, Benjamin J. Eggleton, Thomas P. White, Liam O'Faolain, and Thomas F. Krauss, "Slow light enhancement of nonlinear effects in silicon engineered photonic crystal waveguides," Opt. Express 17, 2944-2953 (2009)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-17-4-2944


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