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Advances in OptoElectronics
Volume 2011, Article ID 751498, 9 pages
Research Article

Dispersion Engineered Silicon Nanocrystal Slot Waveguides for Soliton Ultrafast Optical Processing

1Photonics Research Group, Dipartimento di Ingegneria dell'Ambiente e per lo Sviluppo Sostenibile, Politecnico di Bari, viale del Turismo n. 8, 74100 Taranto, Italy
2Photonics Research Group, Dipartimento di Elettrotecnica ed Elettronica, Politecnico di Bari, via Edoardo Orabona n. 4, 70125 Bari, Italy

Received 28 April 2011; Accepted 16 June 2011

Academic Editor: Anthony Kenyon

Copyright © 2011 Francesco De Leonardis and Vittorio M. N. Passaro. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


We propose, for the first time to our knowledge, the theoretical investigation of silicon nanocrystals-based sandwiched slot waveguides which are dispersion-engineered for exciting optical solitons inside very short structures (only 1.2 mm long). Several parametric simulations have been performed by means of finite element method in order to individuate the best waveguide cross-sections for achieving an anomalous dispersion regime around 1550 nm.